ElectromyographyNCT05281900
Investigation of Muscular Activation Levels Around the Scapula and Shoulder in Exercises Which Body Weight is Carried
A study testing Clinical Tests, MVIC measurements and Exercises in people with Electromyography and Exercise, run by Hacettepe University at 1 site in Turkey (Türkiye).
Trial summary
Closed kinetic chain (CKC) exercises are exercises in which body weight is carried on the distal segment. It is considered advantageous and reliable in many respects compared to open kinetic chain exercises (OKC). Read more about this study
- Who is it for?
- Ages 18 to 45 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Electromyography, Exercise, Exercise Therapy
- What is being tested?
- Clinical Tests, MVIC measurements and Exercises
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 21 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 12 Jan 2022to Sep 2022
- 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 18 to 45 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Physically active participants,
- Having full range of motion of shoulder,
- Having a body mass index less than 30 kg\m2.
Who cannot join
- Exposure to repetitive overhead shoulder movements due to occupational or sports activities,
- Being symptomatic and positive in at least one of the Hawkins-Kennedy, Neer, Apprehension, Relocation test, Jobe test, and External Rotation Resistance tests,
- Having any injury and/or surgery in the last 6 months,
- Having a current complaint of pain in any part of the body,
- Being diagnosed with a rheumatic, systemic or neurological disease,
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Investigation of Muscular Activation Levels Around the Scapula and Shoulder in Exercises Which Body Weight is Carried on the Arms
Closed kinetic chain (CKC) exercises are exercises in which body weight is carried on the distal segment. It is considered advantageous and reliable in many respects compared to open kinetic chain exercises (OKC). For the restoration of functional stability in shoulder rehabilitation, it is recommended to use CKC exercises that carry body weight from the early period. Plank exercise, which is frequently used to strengthen the core area in rehabilitation programs, is performed by transferring weight on the upper extremity. For this reason, it is thought that this exercise will provide an isometric load on the shoulder and scapula muscles. In many previous studies, it has been observed that scapular muscle activations also change with the changes in stability (support surface properties, etc.) in plank exercises and variations in a way that provides a more stable exercise environment. However, as the difficulty level of the used moving floor increased (using softer or unstable surfaces), it was seen that the increase in muscle activation levels was more in favor of the upper trapezius muscle (UT). In a study, it was observed that the UT / Middle Trapeze (MT), UT / Lower Trapezius (LT), UT / Serratus Anterior (SA) ratios were lower in the 3-point supported plank exercise performed on one hand. For this reason, it is thought that while the difficulty level of plank variations is increased in shoulder rehabilitation, body position changes will be more effective in maintaining optimal scapular muscle activation rates instead of using a moving floor. Based on this information, investigating the muscular activation levels for the scapular and shoulder girdle muscles during different variations of the plank exercise in terms of load levels in the targeted muscles will provide valuable information for the management of shoulder exercise programs and post-operative rehabilitation.
It was planned to include 21 healthy physically active individuals between the ages of 18-45 in the study. Muscle activation levels during maximum voluntary isometric contraction (MVIC) of each muscle will be recorded to normalize muscle activation levels during plank variations. Muscle activation levels will be evaluated with a surface electromyography device (Noraxon, Myomotion, USA).
Read the detailed description
Closed kinetic chain (CKC) exercises are exercises in which body weight is carried on the distal segment. It is considered advantageous and reliable in many respects compared to open kinetic chain exercises (OKC). For the restoration of functional stability in shoulder rehabilitation, it is recommended to use CKC exercises that carry body weight from the early period. Plank exercise, which is frequently used to strengthen the core area in rehabilitation programs, is performed by transferring weight on the upper extremity. For this reason, it is thought that this exercise will provide an isometric load on the shoulder and scapula muscles. In many previous studies, it has been observed that scapular muscle activations also change with the changes in stability (support surface properties, etc.) in plank exercises and variations in a way that provides a more stable exercise environment. However, as the difficulty level of the used moving floor increased (using softer or unstable surfaces), it was seen that the increase in muscle activation levels was more in favor of the upper trapezius muscle (UT). In a study, it was observed that the UT / Middle Trapeze (MT), UT / Lower Trapezius (LT), UT / Serratus Anterior (SA) ratios were lower in the 3-point supported plank exercise performed on one hand. For this reason, it is thought that while the difficulty level of plank variations is increased in shoulder rehabilitation, body position changes will be more effective in maintaining optimal scapular muscle activation rates instead of using a moving floor. Based on this information, investigating the muscular activation levels for the scapular and shoulder girdle muscles during different variations of the plank exercise in terms of load levels in the targeted muscles will provide valuable information for the management of shoulder exercise programs and post-operative rehabilitation.
It was planned to include 21 healthy physically active individuals between the ages of 18-45 in the study. Muscle activation levels during maximum voluntary isometric contraction (MVIC) of each muscle will be recorded to normalize muscle activation levels during plank variations. Muscle activation levels will be evaluated with a surface electromyography device (Noraxon, Myomotion, USA).
- Conditions
- Electromyography, Exercise, Exercise Therapy, Shoulder
- Being tested
- Clinical Tests, MVIC measurements, Exercises
- Keywords
- Electromyography, Exercise, Shoulder
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Clinical TestsDiagnostic test
Shoulder impingement and instability tests and shoulder normal range of motion measurement.
MVIC measurementsOther
For the normalization of muscle activation during exercises, muscle activation levels during maximum voluntary isometric contraction (MVIC) of the dominant side Upper Trapezius, Middle Trapezius, Lower Trapezius, Serratus Anterior, Biceps Brachii, Triceps Brachii and Infraspinatus muscles will be recorded. Participants will be asked to stop for 10 seconds at the point where they show resistance. A total of three measurements will be taken and the highest value recorded. The areas where the electrodes will be placed will be prepared by shaving and cleaning with alcohol. The electrode placement will be made parallel to the muscle fibers. A rest period of at least 2 minutes will be allowed between measurements.
ExercisesOther
Activation of the scapula and shoulder girdle muscles will be measured during variations of the plank exercise.
- In the tests, participants will be asked to stay in this position for 10 seconds after providing the standardized stance in the plank position. During the test, a video will be taken and incorrect attempts will be repeated.
- Determined plank variations will be done in mixed order. Each exercise will be repeated 3 times and the average of the repetitions will be recorded as the result. A 2 minute rest period will be given between exercises.
- After each exercise, the perceived effort level will be questioned with the BORG scale. 4 assisted exercises:
- Low plank
- Low plank w/ isometric shoulder external rotation
- High plank
- High plank plus
- Bear plank 3 assisted exercises:
- Low plank w/ front reach
- High plank w/ shoulder taps
- High plank w/ toe touch 2 assisted exercises:
- Low plank bird dog
- High side plank
| Study group | Role | What they receive |
|---|---|---|
| Physically active volunteers | Experimental | All volunteers who meet the inclusion criteria will be included in the study. Receives: Diagnostic Test: Clinical Tests; Other: MVIC measurements; Other: Exercises |
What is being measured
The primary outcome is the main question the study is designed to answer.
Muscle activation ratio recorded with surface electromyography (sEMG)
Electromyography is a measurement method that provides recording and analysis of signals from the central nervous system to the relevant muscle. In this study, muscle activations of the Upper Trapezius(UT), Middle Trapezius(MT), Lower Trapezius(LT), Serratus Anterior(SA), Biceps Brachii(BB), Triceps Brachii(TB) and Infraspinatus(IS) muscles during plank variations will be investigated. Muscle activation levels during maximum voluntary isometric contraction(MVIC) of the muscles will be recorded. The highest value in all repetations of MVIC measurements will be included in the analysis. Muscle activations will be recorded during 10 different plank variations after MVIC measurements. The average value of each repetition will be recorded as a result. As a result of the measurements, %MVIC values of UT, OT, AT, SA, BB, TB, IS, AD muscles and UT/AT, UT/SA, BB/TB, MD/IS activation rates will be calculated in each exercise.
Measured: 2 hours for each participant
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Mar 2022
- Study start12 Jan 2022
- Primary completionJun 2022 (estimated)
- Study completionSep 2022 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ElectromyographyStudies of the same condition, open and under way.
- More trials run by Hacettepe 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
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- All participants will complete each stage in a randomized order.
- Masking
- None (open label)
- Enrolment
- 21 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hacettepe University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Elif Turgut, Hacettepe University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05281900
- Sponsor's protocol ID
- GO 21/979
- Status last verified
- Mar 2022
- First submitted
- 23 Dec 2021
- Last updated
- 16 Mar 2022
- 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 16 Mar 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Investigation of Muscular Activation Levels Around the Scapula and Shoulder in Exercises Which Body Weight is Carried on the Arms
- ClinicalTrials.gov ID
- NCT05281900
- Acronym / sponsor ID
- GO 21/979
- Conditions
- Electromyography, Exercise, Exercise Therapy, Shoulder
- Keywords
- Electromyography, Exercise, Shoulder
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 21 participants (actual)
- Lead sponsor
- Hacettepe UniversityUniversity, hospital or other
- Study start
- 12 Jan 2022 (actual)
- Primary completion
- Jun 2022 (estimated)
- Study completion
- Sep 2022 (estimated)
- First posted
- 16 Mar 2022 (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.
Closed kinetic chain (CKC) exercises are exercises in which body weight is carried on the distal segment. It is considered advantageous and reliable in many respects compared to open kinetic chain exercises (OKC). For the restoration of functional stability in shoulder rehabilitation, it is recommended to use CKC exercises that carry body weight from the early period. Plank exercise, which is frequently used to strengthen the core area in rehabilitation programs, is performed by transferring weight on the upper extremity. For this reason, it is thought that this exercise will provide an isometric load on the shoulder and scapula muscles. In many previous studies, it has been observed that scapular muscle activations also change with the changes in stability (support surface properties, etc.) in plank exercises and variations in a way that provides a more stable exercise environment. However, as the difficulty level of the used moving floor increased (using softer or unstable surfaces), it was seen that the increase in muscle activation levels was more in favor of the upper trapezius muscle (UT). In a study, it was observed that the UT / Middle Trapeze (MT), UT / Lower Trapezius (LT), UT / Serratus Anterior (SA) ratios were lower in the 3-point supported plank exercise performed on one hand. For this reason, it is thought that while the difficulty level of plank variations is increased in shoulder rehabilitation, body position changes will be more effective in maintaining optimal scapular muscle activation rates instead of using a moving floor. Based on this information, investigating the muscular activation levels for the scapular and shoulder girdle muscles during different variations of the plank exercise in terms of load levels in the targeted muscles will provide valuable information for the management of shoulder exercise programs and post-operative rehabilitation.
It was planned to include 21 healthy physically active individuals between the ages of 18-45 in the study. Muscle activation levels during maximum voluntary isometric contraction (MVIC) of each muscle will be recorded to normalize muscle activation levels during plank variations. Muscle activation levels will be evaluated with a surface electromyography device (Noraxon, Myomotion, USA).
Detailed description
Closed kinetic chain (CKC) exercises are exercises in which body weight is carried on the distal segment. It is considered advantageous and reliable in many respects compared to open kinetic chain exercises (OKC). For the restoration of functional stability in shoulder rehabilitation, it is recommended to use CKC exercises that carry body weight from the early period. Plank exercise, which is frequently used to strengthen the core area in rehabilitation programs, is performed by transferring weight on the upper extremity. For this reason, it is thought that this exercise will provide an isometric load on the shoulder and scapula muscles. In many previous studies, it has been observed that scapular muscle activations also change with the changes in stability (support surface properties, etc.) in plank exercises and variations in a way that provides a more stable exercise environment. However, as the difficulty level of the used moving floor increased (using softer or unstable surfaces), it was seen that the increase in muscle activation levels was more in favor of the upper trapezius muscle (UT). In a study, it was observed that the UT / Middle Trapeze (MT), UT / Lower Trapezius (LT), UT / Serratus Anterior (SA) ratios were lower in the 3-point supported plank exercise performed on one hand. For this reason, it is thought that while the difficulty level of plank variations is increased in shoulder rehabilitation, body position changes will be more effective in maintaining optimal scapular muscle activation rates instead of using a moving floor. Based on this information, investigating the muscular activation levels for the scapular and shoulder girdle muscles during different variations of the plank exercise in terms of load levels in the targeted muscles will provide valuable information for the management of shoulder exercise programs and post-operative rehabilitation.
It was planned to include 21 healthy physically active individuals between the ages of 18-45 in the study. Muscle activation levels during maximum voluntary isometric contraction (MVIC) of each muscle will be recorded to normalize muscle activation levels during plank variations. Muscle activation levels will be evaluated with a surface electromyography device (Noraxon, Myomotion, USA).
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- All participants will complete each stage in a randomized order.
| Arm | Type | Receives |
|---|---|---|
| Physically active volunteers | Experimental | Diagnostic Test: Clinical Tests, Other: MVIC measurements, Other: ExercisesAll volunteers who meet the inclusion criteria will be included in the study. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Physically active participants,
- Having full range of motion of shoulder,
- Having a body mass index less than 30 kg\m2.
Key exclusion criteria (5 listed)
- Exposure to repetitive overhead shoulder movements due to occupational or sports activities,
- Being symptomatic and positive in at least one of the Hawkins-Kennedy, Neer, Apprehension, Relocation test, Jobe test, and External Rotation Resistance tests,
- Having any injury and/or surgery in the last 6 months,
- Having a current complaint of pain in any part of the body,
- Being diagnosed with a rheumatic, systemic or neurological disease,
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 |
|---|---|---|
| Clinical TestsShoulder impingement and instability tests and shoulder normal range of motion measurement. | Diagnostic test | Physically active volunteers |
| MVIC measurementsFor the normalization of muscle activation during exercises, muscle activation levels during maximum voluntary isometric contraction (MVIC) of the dominant side Upper Trapezius, Middle Trapezius, Lower Trapezius, Serratus Anterior, Biceps Brachii, Triceps Brachii and Infraspinatus muscles will be recorded. Participants will be asked to stop for 10 seconds at the point where they show resistance. A total of three measurements will be taken and the highest value recorded. The areas where the electrodes will be placed will be prepared by shaving and cleaning with alcohol. The electrode placement will be made parallel to the muscle fibers. A rest period of at least 2 minutes will be allowed between measurements. | Other | Physically active volunteers |
| ExercisesActivation of the scapula and shoulder girdle muscles will be measured during variations of the plank exercise. * In the tests, participants will be asked to stay in this position for 10 seconds after providing the standardized stance in the plank position. During the test, a video will be taken and incorrect attempts will be repeated. * Determined plank variations will be done in mixed order. Each exercise will be repeated 3 times and the average of the repetitions will be recorded as the result. A 2 minute rest period will be given between exercises. * After each exercise, the perceived effort level will be questioned with the BORG scale. 4 assisted exercises: 1. Low plank 2. Low plank w/ isometric shoulder external rotation 3. High plank 4. High plank plus 5. Bear plank 3 assisted exercises: 1. Low plank w/ front reach 2. High plank w/ shoulder taps 3. High plank w/ toe touch 2 assisted exercises: 1. Low plank bird dog 2. High side plank | Other | Physically active volunteers |
Primary outcome
Muscle activation ratio recorded with surface electromyography (sEMG)
Time frame: 2 hours for each participant
Electromyography is a measurement method that provides recording and analysis of signals from the central nervous system to the relevant muscle. In this study, muscle activations of the Upper Trapezius(UT), Middle Trapezius(MT), Lower Trapezius(LT), Serratus Anterior(SA), Biceps Brachii(BB), Triceps Brachii(TB) and Infraspinatus(IS) muscles during plank variations will be investigated. Muscle activation levels during maximum voluntary isometric contraction(MVIC) of the muscles will be recorded. The highest value in all repetations of MVIC measurements will be included in the analysis. Muscle activations will be recorded during 10 different plank variations after MVIC measurements. The average value of each repetition will be recorded as a result. As a result of the measurements, %MVIC values of UT, OT, AT, SA, BB, TB, IS, AD muscles and UT/AT, UT/SA, BB/TB, MD/IS activation rates will be calculated in each exercise.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Mar 2022.
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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 Clinical Tests, MVIC measurements and Exercises in people with Electromyography and Exercise, run by Hacettepe 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 3 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: status not confirmed, as of the sponsor's last update on 16 Mar 2022. 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?
Results are not available in the source record.
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?
Muscle activation ratio recorded with surface electromyography (sEMG) (time frame: 2 hours for each participant). 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 16 Mar 2022.