Shoulder Impingement Syndrome Clinical Trial
Official title:
Effects of the Kinetic Chain Management Approach on Pain and Performance in Volleyball Athletes With Scapular Dyskinesia: A Randomized Controlled Trial
Verified date | January 2019 |
Source | National Yang Ming University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Volleyball is a highly technical sport which involved powerful overhead movements performed
repetitively. Shoulder injuries is the third-most commonly injured body part in volleyball,
with the majority resulting from chronic overuse. Abnormal scapular motions and positions
relative to the thorax have been linked to various shoulder pathologies, including
subacromial impingement, rotator cuff tears, and glenohumeral inferior instability. Also,
Muscular imbalances around the shoulder complex could lead to dyskinesis and resulting in
shoulder joint injuries (e.g. instability and impingement).
The concept of "kinetic chain" is coordinated sequencing of the segments. Sequential
activation of the LE, pelvis and trunk muscles is required to facilitate the forces to be
transferred appropriately from these body segments to the UE.
Reeser et al. have identified risk factors for volleyball-related shoulder pain and
dysfunction. They found volleyball athletes who demonstrated core instability would show
greater relevance to SICK scapula, and they also more likely to report a history of shoulder
problems. Sciascia et al. also have reviewed that 49% athletes with posterior-superior labral
tears showed either decreased hip rotators flexibility or decreased hip abductors strength.
Consequently, the deficits in kinetic chain segments would resulted in scapula dyskinesis,
even lead to shoulder girdle dysfunction or injury.
Therefore, the modern training programs for athletes, especially in overhead players, should
combine kinetic chain exercises to improve upper- and lower body core strength, sport-specific
strength, performance, and prevent injury occurrence or recurrence.
In consideration of no randomized controlled trials (RCTs) have been performed to determine
whether kinetic chain exercise would be more effective to conventional scapula training for
patients with secondary shoulder impingement. The purpose of the study is to investigate the
effects of kinetic chain management approach (KC) and conventional training of scapula
dyskinesis (CT) in volleyball athletes with scapular dyskinesia. The investigators
hypothesized that KC group would be more effective in self-reported pain, and their scapula
would become more stable during movement task (arm-lifting and spiking) after a 4-week
training program than CT group.
Status | Completed |
Enrollment | 40 |
Est. completion date | December 10, 2018 |
Est. primary completion date | November 25, 2018 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 30 Years |
Eligibility |
Inclusion Criteria: - Volleyball athletes who performed related sport activities for more than 10 hour/wks - Age 18-30 years, with diagnosed of scapula dyskinesia by a physical therapist - Shoulder girdle passive range of motion (PROM) within normal limitation - Visual analog score (VAS) rating of pain during activities of sport or daily living during the previous week at a minimum of 3 cm on a 10-cm scale - Insidious onset of symptoms unrelated to trauma and persistent for at least 4 wks Exclusion Criteria: - Can't finish the data collection process due to any other current musculoskeletal pain/injuries - Any neuromuscular disorder, joint or bone disease - History of any orthopedic surgeries |
Country | Name | City | State |
---|---|---|---|
Taiwan | National Yang Ming University | Taipei |
Lead Sponsor | Collaborator |
---|---|
National Yang Ming University |
Taiwan,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Scapular movement consistency (Proprioceptive Feedback Magnitude, PFM) | Scapular positioning (kinematics) during spiking task (spike for 30 repetition, and compare the average of first and last 3 trials) | Baseline and 4-week intervention | |
Secondary | Scapulo-humeral rhythm (scapular kinematics) | Scapular kinematics during spiking task | Baseline and 4-week intervention | |
Secondary | Scapula motor control (muscle activation percentage) | Scapular muscles' activation during spiking task | Baseline and 4-week intervention | |
Secondary | Self-reported pain (Visual Analogue Scale, VAS) | The self-reported worst pain in spiking during previous one week (on a 10-cm scale, 0 cm = no pain, 10 cm = the most severe pain) | Baseline, end of week 1 treatment, end of week 2 treatment, end of week 3 treatment, and end of week 4 treatment |
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