Analysis of Shoulder Muscle Activity During Isokinetic Evaluation of Rotators

Not Applicable

Recruiting

• Conditions: Muscle Strength; Shoulder; Muscle Activation; Electromyography
• Interventions: Other: Isokinetic test + EMG

• Registration Number: NCT04312529
• Lead Sponsor: University of Liege

Brief Summary

The objective of this study is to assess the impact of different positions of the glenohumeral joint on the maximum muscle contraction of different shoulder muscles. The muscles do not contract with the same intensity depending on the position of the arm in relation to the trunk. With the determination of this optimal position to activate the shoulder muscles as much as possible, we will be able to strengthen the patients during their revalidation.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2020-03-11
• Study First Submitted QC: 2020-03-16
• Study First Posted: 2020-03-18
• Study Start: 2020-11-01
• Primary Completion: 2020-12-24
• Status Verified: 2023-05
• Last Update Submitted: 2023-05-08
• Last Update Posted: 2023-05-09
• Study Completion: 2024-05

Recruitment & Eligibility

• Status: RECRUITING
• Sex: Male
• Target Recruitment: 20

Inclusion Criteria

• Male subjects aged 18-35.
• Playing a sport using the upper limb (handball, volleyball, swimming, tennis) at least 6h/week

Exclusion Criteria

• Pain in the shoulder
• Shoulder pathologies such as gleno-humeral dislocation, tendinopathy, sub-acromial conflict, etc.
• History of shoulder surgery (prosthesis, stabilizing surgery, etc.)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Overhead athletes	Isokinetic test + EMG	-

Primary Outcome Measures

Name	Time	Method
strength test	Day 1.	The strength will be assess with a isokinetic device. It will allow to calculate the maximum force of the subject at the level of the rotators of the shoulder. This is a dorsal decubitus test. The subject's arm will be positioned during one session in 45° of abduction and the other session in 90° of shoulder abduction.; In this position, the subject will perform tests at different speeds (60°/s concentric, 240°/s concentric and 60°/s eccentric). This will calculate the maximum force.
Electrical activity of the muscles	Day 1.	The electromyography will allow to calculate the electrical activity of the muscles during the two isokinetics and thus to determine which active position the most the muscles of the shoulder. This measurement is achieved by the installation of surface electrodes

Secondary Outcome Measures

Name	Time	Method
Weight	Day 1	We will ask the weight of the subject to calculate his relative strength

Trial Locations

Locations (1)

Université de Liège; 🇧🇪 Liège, Belgium