Shoulder Muscle Imbalance as a Risk for Shoulder Injury in Elite Adolescent Badminton Players

University Hospital, Caen9 enrolled

Overview

Background: To assess the impact of pre-season clinical measures and rotator muscles strength on the risk of significant shoulder injury (SSI) in elite adolescent badminton players Design: Prospective cohort study Participants: Nine elite adolescents badminton players were included and followed from September 2018 to May 2019. Independent variables: A pre-season visit consisted in clinical and isokinetic shoulder strength testing. Isokinetic internal and external rotator shoulder muscles strength was tested at 60, 120 and 240°/s. Conventional and functional (eccentric-to-concentric) ratios (FR) were calculated. SSI collection was performed by an experienced sport physician.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Sport Injury Shoulder Injuries

Eligibility

Sex: ALLHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * All the elite adolescent badminton players from a high-level club. Exclusion Criteria: * Players who had SSI in the 3 months prior to the isokinetic test or had shoulder surgery

Locations (1)

CHU Caen Normandie

Caen, France

Outcomes

Primary Outcomes

Change from Baseline Isokinetic strength testing (peak torques) at 8 months

Shoulder rotator muscles isokinetic strength test, Measures: Peak Torque on internal rotator muscles (IR) and external rotator muscles (ER), in NM (newton.meter)

Time frame: Two evaluations, one preseason (september 2018) and one postseason (may 2019) visits

Change from Baseline Isokinetic strength testing (ratios) at 8 months

Shoulder rotator muscles isokinetic strength test, Measures: ratios between external rotator muscles (ER) and internal rotator muscles (IR) (ER:IR), in percent (%)

Time frame: Two evaluations, one preseason (september 2018) and one postseason (may 2019) visits

Clinical measurements, ROM

Shoulder internal and external rotation range of motion (ROM)

Time frame: One evaluation, one preseason visit (september 2018)

Clinical measurements TAD

table-to-acromion distance (in cm)

Time frame: One evaluation, one preseason visit (september 2018)

Significant Shoulder Injury (SSI) collection (number of injury)

Significant Shoulder Injury (SSI) collection for the number of injury

Time frame: During the badminton season, the number (number, n) of injury was recorded from september 2018 to may 2019

Significant Shoulder Injury (SSI) collection (type of injury)

Significant Shoulder Injury (SSI) collection for the type of injury

Time frame: During the badminton season, the type of injury (number, n) was recorded from september 2018 to may 2019

Significant Shoulder Injury (SSI) collection (time lost from participation)

Significant Shoulder Injury (SSI) collection for time lost from participation due to the injury

Time frame: During the badminton season, the time lost from participation was recorded (in days) from september 2018 to may 2019