Heart Rate VariabilityNCT06549192
Autonomic Responses of Amateur Child Athletes to Aerobic Exercise Test
A study testing 20 meter shuttle run test in people with Heart Rate Variability and Sport, run by Inonu University at 1 site in Turkey (Türkiye).
Trial summary
The aim of our study was to investigate the relationship between aerobic capacity, which will be revealed by aerobic exercise test, and HRV, blood pressure, heart rate and pulmonary function parameters in healthy children interested in different sports branches (boxing, weightlifting, taekwando, swimming). Read more about this study
- Who is it for?
- Ages 6 to 18 yearsHealthy volunteers can take part
- Conditions the study is for
- Heart Rate Variability, Sport
- What is being tested?
- 20 meter shuttle run test
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 53 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 20 Sep 2024to 1 Jul 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 18 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- 6-18 years old, registered to a club in boxing, weightlifting, taekwando and swimming (4 groups), children and adolescents who have been actively participating in their training for at least 3 months
Who cannot join
- People with neurological, orthopedic, cardiovascular diseases, those with any acute or chronic illness, smokers or drug users, elite level athletes
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Sivas Cumhuriyet University
Sivas, Sivas, 58140
About this study
The aim of our study was to investigate the relationship between aerobic capacity, which will be revealed by aerobic exercise test, and HRV, blood pressure, heart rate and pulmonary function parameters in healthy children interested in different sports branches (boxing, weightlifting, taekwando, swimming). The main questions it aims to answer are:
- Is there any relationship between aerobic capacity demonstrated by 20 m shuttle test and heart rate variability, blood pressure, heart rate and respiratory parameters in different sports branches?
- Is there a relationship between the month/year that children/adolescents are involved in sports and HRV, blood pressure and respiratory parameters?
Read more
Participants:
- Before the exercise test, ECG, blood pressure, heart rate and pulmonary function test will be performed.
- A 20 meter shuttle run test will be performed.
- Measurements will be repeated after the exercise test.
- Conditions
- Heart Rate Variability, Sport
- Being tested
- 20 meter shuttle run test
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
20 meter shuttle run testOther
20 Meter Shuttle Run Test: Subjects run distance of 20 meters round trip. Running speed is monitored at certain intervals with help of a tape recorder that gives a signal. Subjects start running when they hear first beep and must reach other line(one foot must cross the line) by second beep. When they hear second signal, they return to starting line. The speed, which is slow at beginning, gradually increases every 10 seconds. The subject adjusts his/her pace so that he/she is on the other line at the second signal. If subject misses one signal and catches second signal, test continues. If subject misses two signals in row and doesn't reach line at other signal, test is terminated. At end of test, aerobic power values are calculated from VO2max estimation table in ml/kg/min according to number of sit-ups run. At end of test, marks obtained by athlete are calculated and VO2max value of subject is calculated in ml/kg/min from evaluation table.
| Study group | Role | What they receive |
|---|---|---|
| Group 1: Boxers | Active comparator | Before the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. Receives: Other: 20 meter shuttle run test |
| Group 2: Weightlifters | Active comparator | Before the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. Receives: Other: 20 meter shuttle run test |
| Group 3: Taekwondo players | Active comparator | Before the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. Receives: Other: 20 meter shuttle run test |
| Group 4: Swimmer | Active comparator | Before the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. Receives: Other: 20 meter shuttle run test |
What is being measured
The primary outcome is the main question the study is designed to answer.
FVC
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
FEV1
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
FEV1/FVC
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
FEF25
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
FEF75
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
FEF2575
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
PEF
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
Measured: 1 hours
SDNN (msn)
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
RMSSD (msn)
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
pNN50 (%)
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
TP (msn²)
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
LF (msn²), %LF, LFnorm
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
HF (msn²), %HF, HFnorm
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
LF/HF (msn²)
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Measured: 1 hours
Systolic blood pressure
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Measured: 1 hours
Diastolic blood pressure
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Measured: 1 hours
Heart rate per minute
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Measured: 1 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Aug 2024
- Study start20 Sep 2024
- Primary completion1 Jul 2025
- Study completion1 Jul 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Heart Rate VariabilityStudies of the same condition, open and under way.
- More trials run by Inonu UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 53 participants (actual)
Sponsor and investigators
- Lead sponsor
- Inonu University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Emine Nacar, Inonu University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06549192
- Sponsor's protocol ID
- 2024/05-47
- Status last verified
- Jul 2025
- First submitted
- 4 Aug 2024
- Last updated
- 17 Jul 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Jul 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Autonomic Responses of Amateur Child Athletes to Aerobic Exercise Test
- ClinicalTrials.gov ID
- NCT06549192
- Acronym / sponsor ID
- 2024/05-47
- Conditions
- Heart Rate Variability, Sport
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 53 participants (actual)
- Lead sponsor
- Inonu UniversityUniversity, hospital or other
- Study start
- 20 Sep 2024 (actual)
- Primary completion
- 1 Jul 2025 (actual)
- Study completion
- 1 Jul 2025 (actual)
- First posted
- 12 Aug 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of our study was to investigate the relationship between aerobic capacity, which will be revealed by aerobic exercise test, and HRV, blood pressure, heart rate and pulmonary function parameters in healthy children interested in different sports branches (boxing, weightlifting, taekwando, swimming). The main questions it aims to answer are:
- Is there any relationship between aerobic capacity demonstrated by 20 m shuttle test and heart rate variability, blood pressure, heart rate and respiratory parameters in different sports branches?
- Is there a relationship between the month/year that children/adolescents are involved in sports and HRV, blood pressure and respiratory parameters?
Participants:
- Before the exercise test, ECG, blood pressure, heart rate and pulmonary function test will be performed.
- A 20 meter shuttle run test will be performed.
- Measurements will be repeated after the exercise test.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Group 1: Boxers | Active comparator | Other: 20 meter shuttle run testBefore the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. |
| Group 2: Weightlifters | Active comparator | Other: 20 meter shuttle run testBefore the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. |
| Group 3: Taekwondo players | Active comparator | Other: 20 meter shuttle run testBefore the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. |
| Group 4: Swimmer | Active comparator | Other: 20 meter shuttle run testBefore the assessment begins, the children will be asked whether they have consumed any beverages containing theine and caffeine, such as tea, coffee, cola and energy drinks, which can affect the heart, in the last two hours. If this is the case, the shooting will be postponed to the next day without consuming such beverages. Participants will first have their information recorded on the general evaluation form. Their resting heart rate variability, blood pressure, heart rate and respiratory function will then be measured. After these initial measurements at rest, the participants will be given a 20 meter shuttle run test. At the end of the test, the participant will be taken to the first assessment room for a second assessment. Here, ECG, blood pressure and heart rate, spirometer measurements will be repeated. All outcome measurements will be recorded on the evaluation form. |
Who may qualify
- Ages
- 6 to 18 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- 6-18 years old, registered to a club in boxing, weightlifting, taekwando and swimming (4 groups), children and adolescents who have been actively participating in their training for at least 3 months
Key exclusion criteria (1 listed)
- People with neurological, orthopedic, cardiovascular diseases, those with any acute or chronic illness, smokers or drug users, elite level athletes
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| 20 meter shuttle run test20 Meter Shuttle Run Test: Subjects run distance of 20 meters round trip. Running speed is monitored at certain intervals with help of a tape recorder that gives a signal. Subjects start running when they hear first beep and must reach other line(one foot must cross the line) by second beep. When they hear second signal, they return to starting line. The speed, which is slow at beginning, gradually increases every 10 seconds. The subject adjusts his/her pace so that he/she is on the other line at the second signal. If subject misses one signal and catches second signal, test continues. If subject misses two signals in row and doesn't reach line at other signal, test is terminated. At end of test, aerobic power values are calculated from VO2max estimation table in ml/kg/min according to number of sit-ups run. At end of test, marks obtained by athlete are calculated and VO2max value of subject is calculated in ml/kg/min from evaluation table. | Other | Group 1: Boxers, Group 2: Weightlifters, Group 3: Taekwondo players, Group 4: Swimmer |
Primary outcome
FVC
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
FEV1
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
FEV1/FVC
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
FEF25
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
FEF75
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
FEF2575
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
PEF
Time frame: 1 hours
A portable spirometer device will be used for the measurement of pulmonary function. During the test, the child will be placed in an upright sitting position with the pelvis in the most neutral position. Before the test, the child will be trained, demonstrated and explained what to do during the test. A different mouthpiece will be used for each child. The nose will be closed with the help of a clothespin and the measurement will be repeated 3 times and the best result will be taken into consideration. During the test, first inhale and exhale into the spirometer mouthpiece at normal tidal volume. Then a deep breath is taken and a rapid deep exhalation is requested. The exhalation period should last at least 6 s without interruption.
SDNN (msn)
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
RMSSD (msn)
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
pNN50 (%)
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
TP (msn²)
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
LF (msn²), %LF, LFnorm
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
HF (msn²), %HF, HFnorm
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
LF/HF (msn²)
Time frame: 1 hours
HRV obtained by electrocardiography (ECG) recording is a method that provides information about sympatho-vagal balance, calculated on the basis of the variability of the intervals between heart beats. Recordings will be taken in a quiet and calm room in the supine position. A 3-way bipolar limb lead with remote bluetooth connection (poly-spectrum-8/ex) will be used for ECG recording. Electrodes will be appropriately attached to the wrists and ankles. Participants will be asked to remove any metal objects (coins, belts, watches, bracelets, phones, etc.) that may interfere with the ECG. Participants will be pre-informed not to move, talk, breathe normally and remain in a supine position during the recording. After 5 minutes of ECG recordings are taken, data on HRV parameters will be obtained with device-specific software.
Systolic blood pressure
Time frame: 1 hours
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Diastolic blood pressure
Time frame: 1 hours
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Heart rate per minute
Time frame: 1 hours
Care will be taken to ensure that the person being measured is not cold, not in pain, not anxious, and not urinating or having a large bowel movement before the measurement. After the brachial artery is felt by hand, the cuff will be placed 2-3 cm above the antecubital fossa so that it is not too loose or tight. Care will be taken to ensure that the skin is not pinched, the palms are open and facing upwards. They will be warned not to make a fist. The cuff will be placed in the middle of the arm at the level of the heart so that the arm and heart are in the same horizontal plane. Blood pressure measurement is started with an automatic measuring device (F.Bosch, Germany). The device inflates the cuff enough to stop arterial blood flow. As the cuff deflates, it measures oscillations in the blood flow and then calculates the blood pressure using device-specific algorithms. The device also provides the heart rate in beats per minute.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Jul 2025.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing 20 meter shuttle run test in people with Heart Rate Variability and Sport, run by Inonu University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 17 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
FVC (time frame: 1 hours). The study lists 17 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jul 2025.