Sprint PerformanceNCT04859153
Relevant Factors on Sprint Performance in Adolescent Sprinters
An observational study of Sprint Performance and Physical Fitness, run by China Medical University Hospital at 1 site in Taiwan.
Trial summary
Purpose: To explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor. Read more about this study
- Who is it for?
- Ages 13 to 18 yearsHealthy volunteers can take part
- Conditions the study is for
- Sprint Performance, Physical Fitness, Muscle Architecture
- How many people
- 30 participants
- Where
- 1 siteTaiwan
- Study dates
- 27 Jul 2021to 1 Feb 2022
- Phase
- Observational
- 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 13 to 18 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Study population: the healthy adolescent athletes of the athletics sprint and other kinds of sports
Who may be able to join
- the healthy adolescent athletes of the athletics sprint and other kinds of sports
Who cannot join
- cardiovascular diseases
- lower extremities surgery histories
- musculoskeletal sports injuries that would affect the sports testing
- auditory or visual disabilities
- brain injury histories.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Relevant Factors on Sprint Performance in Adolescent Sprinters: Influences of Central Visuomotor and Audiomotor Mechanisms, Muscle Mechanical Properties and Skill-related Physical Fitness
Purpose: To explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor.
Read the detailed description
The sprint performance was determined by various relevant factors, and they were mainly divided into central system factor and peripheral system factor. An effective sprint start requires a quick reaction to an auditory stimulus followed by a determined sequence of activation of particular muscles responsible for maximum movement speed. Both of the skill-related physical fitness, including muscle strength, muscle endurance, muscle power, speed, agility, and balance, and muscle physical characteristic, including muscle tone and muscle architecture, are related to the sprint performance. The 100m race could divided into three different phases, start acceleration, maximum speed, and deceleration. According to Collet, 1999, the determinants of the temporal structure of the sprint start are RT, movement speed and movement frequency, which involves in perfecting sprinters' physical performance. And also, according to Pilianidis et al., 2012; Tonnessen et al., 2013, the start reaction time significantly affects the reduction of running time in 100 m races. In the recent studies, there are researches only showing that the auditory stimulus trainings significantly affected the final results for swimming athletes, and that the visual stimulus trainings significantly affected the final scores for badminton athletes.This study will mainly recruit the healthy adolescent athletes of the athletics sprint and other kinds of sports in the age range 13-18 years, and will evaluate the athletes of anthropometric measurements and physical fitness, 100m sprint performance, muscle characteristic, jump ability, agility, and nerve potential measurements.The outcome of this study will be able to be one of the comprehensive trials for coaches to take into consideration when choosing their own athletes. And also, the athletes may choose their own specialties that fit their own physical conditions. Moreover, the adolescent athletes will be trained more precisely and effectively. These will positively lead to reaching their personal best results and decreasing the occurrences of the sport injuries due to unsuitable events and trainings.
- Being tested
- central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness test
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness testDiagnostic test
To explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor.
| Study group | Role | What they receive |
|---|---|---|
| Sprinter | All sex of healthy adolescent athletes of the athletics sprint Receives: Diagnostic Test: central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness test | |
| Non-sprinter | All sex of healthy adolescent athletes of other kinds of sports Receives: Diagnostic Test: central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness test |
What is being measured
The primary outcome is the main question the study is designed to answer.
Distance of vertical jump.horizontal jump and hexagonal barbell jump squat
Use data collection sensor (Vmaxpro, Germany) to measure.
- vertical jump :; The subject will in an upright posture when preparing for the action. At the beginning, they will squat down until knees were bent 90 degrees, and jump as high as possible.
- horizontal jump : The subject's leg should be shoulder-width apart, squat and jump forward as far as possible.
- hexagonal barbell jump squat : The subject will perform five different weight jumps (0%, 10%, 20%, 30% and 40% of 1RM) with a 15 kg hexagonal barbell, they will squat down until knees were bent 90 degrees, and jump as high as possible.
The data collection sensor will detect the highest and farthest distance(meters).
Measured: day 1
Power of vertical jump.horizontal jump and hexagonal barbell jump squat
Use data collection sensor (Vmaxpro, Germany) to measure.
- vertical jump : The subject will in an upright posture when preparing for the action. At the beginning, they will squat down until knees were bent 90 degrees, and jump as high as possible.
- horizontal jump : The subject's leg should be shoulder-width apart, squat and jump forward as far as possible.
- hexagonal barbell jump squat : The subject will perform five different weight jumps (0%, 10%, 20%, 30% and 40% of 1RM) with a 15 kg hexagonal barbell, they will squat down until knees were bent 90 degrees, and jump as high as possible.
The data collection sensor will detect the velocity and time and use the following formula to calculate the power.
P=power(W), F=force(kg*m/s^2), V=velocity(m/s),a= acceleration(m/s^2), M=body mass(kg), D= displacement(meters), T=time(seconds)
- P=F*V(kg*m^2/s^3)
- F=M*a(kg*m/s^2)
- V=D/T(m/s)
Measured: day 1
T-test
To measure agility.Set a T-shape with cones. The subject starts from the starting line and starts timing. The subject sprints forward 10 meters to touches the cone A, and then sprints runs to the right for 5 meters to touches the cone B, then move 10 meters to the left and touches the cone C. Finally, move to the right to touches the cone A, then run back across the finish line. Stopped timing when subject passed the finish line. Redcord the best result (seconds).
Measured: day 1
Hexagonal Obstacle Test
To measure agility. Stick a hexagon with a side length of 66 cm on the ground with black tape. The subject's starting position is in the middle of the hexagon. After starting the timing, jump out of each side in order, and then return to the starting position. Stopped timing when after the subject returns to the starting position. Redcord the best result (seconds).
Measured: day 1
Thickness of muscle
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows muscle thickness(centimeter) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Pennation angle of muscle
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows pennation angle (degree) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Fascicle length of muscle
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows fascicle length (centimeter) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Muscle tone
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows muscle tone(Hz) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Muscle stiffness
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows muscle stiffness (N/m) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Muscle elasticity
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella.
The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia.
The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia.
It shows muscle elasticity (Decrement) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Measured: day 1
Visuomotor reaction time
Measure visual reaction time by Electroencephalography(EEG) Use Neurosoft 21 channel upgradeable EEG system (Neurosoft Neuron Spectrum 4, Russia) to collect EEG data.The electrodes will be put on with plastic caps and distributed evenly on both sides of the brain. The electrical reference will be affixed to O1, O2 and AFz.
The subject must respond to slow motion onset visual stimulus. When the subject sees the moving visual stimulus on the screen, press the designated button with the index finger of the dominant hand at the fastest speed and the shortest time. The two stimuli will be randomly separated by 2-6 seconds.
The EEG will show alpha waves include frequency, amplitude, waveform and time of reaction time.
Measured: day 1
Audiomotor reaction time
Measure auditory reaction time by Electroencephalography(EEG) Use Neurosoft 21 channel upgradeable EEG system (Neurosoft Neuron Spectrum 4, Russia) to collect EEG data.The electrodes will be put on with plastic caps and distributed evenly on both sides of the brain. The electrical reference will be affixed to FCz and AFz.
The subject must respond to slow motion onset auditory stimulus. When hearing the auditory stimulus, the subject must use the index finger of the dominant hand to press the designated button at the fastest speed and the shortest time. There will be a random interval of 2-6 seconds between the two stimuli.
The EEG will show alpha waves include frequency, amplitude, waveform and time of reaction time.
Measured: day 1
100 meter sprint performance
An light gate was used to measure the subjects' 100m sprint performance. Two light gate were placed at the starting line and the finish line. There were 2 tests in total. The best result (second) was selected for analysis.
Measured: day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Apr 2021
- Study start27 Jul 2021
- Primary completion1 Feb 2022
- Study completion1 Feb 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sprint PerformanceStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- China Medical University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Jia -Min Wu, Principal investigator, Yueh-Ling Hsieh's graduate student
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04859153
- Sponsor's protocol ID
- CRREC-109-195
- Status last verified
- Dec 2023
- First submitted
- 28 Mar 2021
- Last updated
- 5 Dec 2023
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 5 Dec 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relevant Factors on Sprint Performance in Adolescent Sprinters: Influences of Central Visuomotor and Audiomotor Mechanisms, Muscle Mechanical Properties and Skill-related Physical Fitness
- ClinicalTrials.gov ID
- NCT04859153
- Acronym / sponsor ID
- CRREC-109-195
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- China Medical University HospitalUniversity, hospital or other
- Study start
- 27 Jul 2021 (actual)
- Primary completion
- 1 Feb 2022 (actual)
- Study completion
- 1 Feb 2022 (actual)
- First posted
- 26 Apr 2021 (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.
Purpose: To explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor.
Detailed description
The sprint performance was determined by various relevant factors, and they were mainly divided into central system factor and peripheral system factor. An effective sprint start requires a quick reaction to an auditory stimulus followed by a determined sequence of activation of particular muscles responsible for maximum movement speed. Both of the skill-related physical fitness, including muscle strength, muscle endurance, muscle power, speed, agility, and balance, and muscle physical characteristic, including muscle tone and muscle architecture, are related to the sprint performance. The 100m race could divided into three different phases, start acceleration, maximum speed, and deceleration. According to Collet, 1999, the determinants of the temporal structure of the sprint start are RT, movement speed and movement frequency, which involves in perfecting sprinters' physical performance. And also, according to Pilianidis et al., 2012; Tonnessen et al., 2013, the start reaction time significantly affects the reduction of running time in 100 m races. In the recent studies, there are researches only showing that the auditory stimulus trainings significantly affected the final results for swimming athletes, and that the visual stimulus trainings significantly affected the final scores for badminton athletes.This study will mainly recruit the healthy adolescent athletes of the athletics sprint and other kinds of sports in the age range 13-18 years, and will evaluate the athletes of anthropometric measurements and physical fitness, 100m sprint performance, muscle characteristic, jump ability, agility, and nerve potential measurements.The outcome of this study will be able to be one of the comprehensive trials for coaches to take into consideration when choosing their own athletes. And also, the athletes may choose their own specialties that fit their own physical conditions. Moreover, the adolescent athletes will be trained more precisely and effectively. These will positively lead to reaching their personal best results and decreasing the occurrences of the sport injuries due to unsuitable events and trainings.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sprinter | – | Diagnostic Test: central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness testAll sex of healthy adolescent athletes of the athletics sprint |
| Non-sprinter | – | Diagnostic Test: central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness testAll sex of healthy adolescent athletes of other kinds of sports |
Who may qualify
- Ages
- 13 to 18 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
- Study population
- the healthy adolescent athletes of the athletics sprint and other kinds of sports
Key inclusion criteria (1 listed)
- the healthy adolescent athletes of the athletics sprint and other kinds of sports
Key exclusion criteria (5 listed)
- cardiovascular diseases
- lower extremities surgery histories
- musculoskeletal sports injuries that would affect the sports testing
- auditory or visual disabilities
- brain injury histories.
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 |
|---|---|---|
| central nerve sensory, motor control and various muscle mechanical characteristic and sport-related fitness testTo explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor. | Diagnostic test | Non-sprinter, Sprinter |
Primary outcome
Distance of vertical jump.horizontal jump and hexagonal barbell jump squat
Time frame: day 1
Use data collection sensor (Vmaxpro, Germany) to measure. * vertical jump :; The subject will in an upright posture when preparing for the action. At the beginning, they will squat down until knees were bent 90 degrees, and jump as high as possible. * horizontal jump : The subject's leg should be shoulder-width apart, squat and jump forward as far as possible. * hexagonal barbell jump squat : The subject will perform five different weight jumps (0%, 10%, 20%, 30% and 40% of 1RM) with a 15 kg hexagonal barbell, they will squat down until knees were bent 90 degrees, and jump as high as possible. The data collection sensor will detect the highest and farthest distance(meters).
Power of vertical jump.horizontal jump and hexagonal barbell jump squat
Time frame: day 1
Use data collection sensor (Vmaxpro, Germany) to measure. * vertical jump : The subject will in an upright posture when preparing for the action. At the beginning, they will squat down until knees were bent 90 degrees, and jump as high as possible. * horizontal jump : The subject's leg should be shoulder-width apart, squat and jump forward as far as possible. * hexagonal barbell jump squat : The subject will perform five different weight jumps (0%, 10%, 20%, 30% and 40% of 1RM) with a 15 kg hexagonal barbell, they will squat down until knees were bent 90 degrees, and jump as high as possible. The data collection sensor will detect the velocity and time and use the following formula to calculate the power. P=power(W), F=force(kg*m/s^2), V=velocity(m/s),a= acceleration(m/s^2), M=body mass(kg), D= displacement(meters), T=time(seconds) * P=F*V(kg*m^2/s^3) * F=M*a(kg*m/s^2) * V=D/T(m/s)
T-test
Time frame: day 1
To measure agility.Set a T-shape with cones. The subject starts from the starting line and starts timing. The subject sprints forward 10 meters to touches the cone A, and then sprints runs to the right for 5 meters to touches the cone B, then move 10 meters to the left and touches the cone C. Finally, move to the right to touches the cone A, then run back across the finish line. Stopped timing when subject passed the finish line. Redcord the best result (seconds).
Hexagonal Obstacle Test
Time frame: day 1
To measure agility. Stick a hexagon with a side length of 66 cm on the ground with black tape. The subject's starting position is in the middle of the hexagon. After starting the timing, jump out of each side in order, and then return to the starting position. Stopped timing when after the subject returns to the starting position. Redcord the best result (seconds).
Thickness of muscle
Time frame: day 1
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows muscle thickness(centimeter) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Pennation angle of muscle
Time frame: day 1
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows pennation angle (degree) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Fascicle length of muscle
Time frame: day 1
Using the liner transducer, 5M-Hz, B(brightness)-mode. The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows fascicle length (centimeter) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Muscle tone
Time frame: day 1
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows muscle tone(Hz) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Muscle stiffness
Time frame: day 1
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows muscle stiffness (N/m) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Muscle elasticity
Time frame: day 1
Using the hand-held device MyotonPRO The measurement of the knee extensor muscle is located midway between the anterior superior iliac spine and the superior part of the patella. The measurement of the knee flexor muscle is located midway between the ischial tuberosity and the lateral epicondyle of the tibia. The measurement of the plantarflexor muscle is located at the proximal 30% between the lateral malleolus and the lateral condyle of the tibia. It shows muscle elasticity (Decrement) of the knee extensor muscle, knee flexor muscle and plantarflexor muscle.
Visuomotor reaction time
Time frame: day 1
Measure visual reaction time by Electroencephalography(EEG) Use Neurosoft 21 channel upgradeable EEG system (Neurosoft Neuron Spectrum 4, Russia) to collect EEG data.The electrodes will be put on with plastic caps and distributed evenly on both sides of the brain. The electrical reference will be affixed to O1, O2 and AFz. The subject must respond to slow motion onset visual stimulus. When the subject sees the moving visual stimulus on the screen, press the designated button with the index finger of the dominant hand at the fastest speed and the shortest time. The two stimuli will be randomly separated by 2-6 seconds. The EEG will show alpha waves include frequency, amplitude, waveform and time of reaction time.
Audiomotor reaction time
Time frame: day 1
Measure auditory reaction time by Electroencephalography(EEG) Use Neurosoft 21 channel upgradeable EEG system (Neurosoft Neuron Spectrum 4, Russia) to collect EEG data.The electrodes will be put on with plastic caps and distributed evenly on both sides of the brain. The electrical reference will be affixed to FCz and AFz. The subject must respond to slow motion onset auditory stimulus. When hearing the auditory stimulus, the subject must use the index finger of the dominant hand to press the designated button at the fastest speed and the shortest time. There will be a random interval of 2-6 seconds between the two stimuli. The EEG will show alpha waves include frequency, amplitude, waveform and time of reaction time.
100 meter sprint performance
Time frame: day 1
An light gate was used to measure the subjects' 100m sprint performance. Two light gate were placed at the starting line and the finish line. There were 2 tests in total. The best result (second) was selected for analysis.
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 5 Dec 2023.
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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.
Jia -Min Wu principal investigator
Yueh-Ling Hsieh's graduate student
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Sprint Performance and Physical Fitness, run by China Medical University Hospital at 1 site in Taiwan.
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 5 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 5 Dec 2023. 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 Taiwan. 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?
Distance of vertical jump.horizontal jump and hexagonal barbell jump squat (time frame: day 1). The study lists 13 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 5 Dec 2023; AzTrials last refreshed its copy on 30 Oct 2026.