Shoulder Muscle ActivationNCT04869241
Changes in Muscle Activation When Carrying Backpacks
A study testing surface EMG in people with Shoulder Muscle Activation and Surface Emg, run by Bundang CHA Hospital at 1 site in South Korea.
Trial summary
To investigate change of shoulder muscles by measuring muscle activity according to the position of the backpack. Read more about this study
- Who is it for?
- Ages 20 to 59 yearsHealthy volunteers can take part
- Conditions the study is for
- Shoulder Muscle Activation, Surface Emg
- What is being tested?
- surface EMG
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- 1 siteSouth Korea
- Study dates
- 3 May 2021to 28 May 2021
- 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 20 to 59 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy adults from 20s to 50s
Who cannot join
- Restriction of joint motion range of shoulder and elbow
- Hisory of upper limb surgery in the past 6 months
- If there is an external wire such as a temporary external pacemaker or central line guide wire
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Changes in Muscle Activation of Serratus Anterior, Deltoid (Anterior) and Trapezius (Upper and Lower) According to the Methods of Carrying Backpacks
To investigate change of shoulder muscles by measuring muscle activity according to the position of the backpack.
Read the detailed description
Most of modern people, including students and office workers, wear backpacks for a considerable amount of time. There have been prior studies on the change in muscle activity around the spine and shoulders muscles according to the weight of the backpack, but studies on the change in muscle activity according to the direction of the bag are insufficient. So this study is to evaluate the effect on the musculoskeletal system by comparing the activity of the muscles around the shoulder according to the anterior or posterior wearing of the backpack.
Muscles around the shoulder are composed of: Serratus anterior, trapezius(upper and lower) which control scapular movement and deltoid muscles which activate shoulder abduction directly. We would like to focus change of these muscles's activities when carrying a backpack according to the anterior or posterior direction and bilateral or unilateral.
To measure muscle activity, eight-channel electromyography (EMG) Using Nicolet EDX (Natus Medical Inc., San Carolos, CA, USA), surface EMG (sEMG) signal were used.
- Conditions
- Shoulder Muscle Activation, Surface Emg
- Being tested
- surface EMG
- Keywords
- backpack, shoulder muscle activation, surface emg, deltoid, serratus anterior, trapezius
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
surface EMGDiagnostic test
Carrying backpacks forward or backward
| Study group | Role | What they receive |
|---|---|---|
| Experimental group | Experimental | Group measuring shoulder muscle activities by surface EMG with carrying backpacks forward Receives: Diagnostic Test: surface EMG |
What is being measured
The primary outcome is the main question the study is designed to answer.
Root mean square of each muscle activation
Quantification of muscle activity
Measured: through study completion, an average of 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 May 2021
- Study start3 May 2021
- Primary completion28 May 2021
- Study completion28 May 2021
Why it stopped: Change of a principal investigator
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Shoulder Muscle ActivationStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bundang CHA Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, MinYoung Kim, MD, PhD, Bundang CHA Hospital
- Investigators
- Kyunghoon Min, MD, PhD, Study director, Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University School of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04869241
- Sponsor's protocol ID
- BundangCHA
- Status last verified
- May 2021
- First submitted
- 8 Apr 2021
- Last updated
- 1 Jun 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 1 Jun 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Changes in Muscle Activation of Serratus Anterior, Deltoid (Anterior) and Trapezius (Upper and Lower) According to the Methods of Carrying Backpacks
- ClinicalTrials.gov ID
- NCT04869241
- Acronym / sponsor ID
- BundangCHA
- Conditions
- Shoulder Muscle Activation, Surface Emg
- Keywords
- backpack, shoulder muscle activation, surface emg, deltoid, serratus anterior, trapezius
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Change of a principal investigator
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Bundang CHA HospitalUniversity, hospital or other
- Study start
- 3 May 2021 (actual)
- Primary completion
- 28 May 2021 (actual)
- Study completion
- 28 May 2021 (actual)
- First posted
- 3 May 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.
To investigate change of shoulder muscles by measuring muscle activity according to the position of the backpack.
Detailed description
Most of modern people, including students and office workers, wear backpacks for a considerable amount of time. There have been prior studies on the change in muscle activity around the spine and shoulders muscles according to the weight of the backpack, but studies on the change in muscle activity according to the direction of the bag are insufficient. So this study is to evaluate the effect on the musculoskeletal system by comparing the activity of the muscles around the shoulder according to the anterior or posterior wearing of the backpack.
Muscles around the shoulder are composed of: Serratus anterior, trapezius(upper and lower) which control scapular movement and deltoid muscles which activate shoulder abduction directly. We would like to focus change of these muscles's activities when carrying a backpack according to the anterior or posterior direction and bilateral or unilateral.
To measure muscle activity, eight-channel electromyography (EMG) Using Nicolet EDX (Natus Medical Inc., San Carolos, CA, USA), surface EMG (sEMG) signal were used.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Experimental group | Experimental | Diagnostic Test: surface EMGGroup measuring shoulder muscle activities by surface EMG with carrying backpacks forward |
Who may qualify
- Ages
- 20 to 59 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Healthy adults from 20s to 50s
Key exclusion criteria (3 listed)
- Restriction of joint motion range of shoulder and elbow
- Hisory of upper limb surgery in the past 6 months
- If there is an external wire such as a temporary external pacemaker or central line guide wire
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 |
|---|---|---|
| surface EMGCarrying backpacks forward or backward | Diagnostic test | Experimental group |
Primary outcome
Root mean square of each muscle activation
Time frame: through study completion, an average of 1 year
Quantification of muscle activity
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Jun 2021.
- Individual participant dataSharing planned: Yes
Related trials for Shoulder Muscle Activation
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Scapular Muscle Activation and Shoulder Performance in Migraine
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Kinematics and Muscle Activation of Scapula in Upper String Players With Neck Pain
Non-specific Neck Pain, Playing Related Musculoskeletal Disorders
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Structure and Function of the Upper Trapezius and Its Role in Chronic Shoulder Pain: an Investigation of Kinematics, Morphology, Muscle Quality and Activation Distribution
Chronic Shoulder Pain
Enrolling by invitation
Comparison of Dynamic Ultrasound Visual Feedback to Manual Feedback on Scapular Stabilizer Activation and Change in the Subacromial Space in Persons With Pain During Shoulder Elevation
Subacromial Impingement Syndrome, Apical Shoulder Pain
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.
Kyunghoon Min, MD, PhD study director
Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University School of Medicine
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing surface EMG in people with Shoulder Muscle Activation and Surface Emg, run by Bundang CHA Hospital at 1 site in South Korea.
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 3 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: withdrawn, as of the sponsor's last update on 1 Jun 2021. 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 South Korea. 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 was withdrawn before enrolling participants, so there are no results.
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?
Root mean square of each muscle activation (time frame: through study completion, an average of 1 year). 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 1 Jun 2021.