Overuse Related Shoulder Problems Clinical Trial
Official title:
Evaluation of Sport Specific Adaptations and Risk Factors at the Shoulder Joint and Core Stability Among Female Volleyball Players With and Without Overuse Related Shoulder Symptoms
| Verified date | March 2018 |
| Source | Zurich University of Applied Sciences |
| Contact | n/a |
| Is FDA regulated | No |
| Health authority | |
| Study type | Observational |
The shoulder joint is the second most affected body part of all overuse injuries in overhead athletes. Due to the repetitive throwing motion overhead athletes show the following characteristic adaptations of their dominant shoulder: Loss of internal rotation (IR) and gain of external rotation (ER), reduced muscle strength of the shoulder external rotators and scapular dyskinesis. On the one hand these adaptations are normal and necessary for a powerful throwing performance. On the other hand the amount of adaptation seems to play a crucial role in developing overuse symptoms and therefore becoming a risk factor. Most previous studies investigating throwing specific adaptations and risk factors focused on overhead sports like baseball, handball or tennis, whereas similar research in volleyball is still insufficient. Therefore the aim of this study is to evaluate if sport specific adaptations are present in female volleyball players and if yes, if there is a difference of the extent of these adaptations in volleyball players with overuse symptoms and players without.
| Status | Completed |
| Enrollment | 60 |
| Est. completion date | March 18, 2018 |
| Est. primary completion date | November 30, 2017 |
| Accepts healthy volunteers | Accepts Healthy Volunteers |
| Gender | Female |
| Age group | 16 Years and older |
| Eligibility |
Inclusion Criteria: - female - being member of a Nat. League B/Nat. League A Volleyball Team in season 2017/2018 - minimum age 16 years - sufficient understanding/speaking of the German language - signed informed consent Exclusion Criteria: - having had any surgery at the shoulder joint of the dominant or non- dominant side within last six month - having had any self reported trauma at the shoulder joint of the dominant or non-dominant side, which limits training or match participation of more than 50% - limitation of more than 50% in training or match participation caused by a surgery or trauma at the core or lower extremity |
| Country | Name | City | State |
|---|---|---|---|
| Switzerland | ZHAW | Winterthur |
| Lead Sponsor | Collaborator |
|---|---|
| Zurich University of Applied Sciences |
Switzerland,
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* Note: There are 12 references in all — Click here to view all references
| Type | Measure | Description | Time frame | Safety issue |
|---|---|---|---|---|
| Primary | isometric strength of shoulder internal and extern rotators | Isometric strength is measured in Newton (N) using a digital handheld dynamometer (HHD; Model 01165, Lafayette Instrument Company, USA). The participants are placed in supine with their shoulder in 0° abduction (ABD) a small towel roll is used to maintain the humerus in a neutral position and their elbow flexed to 90°. The forearm is fixed to the core using a fixation band. The HHD is placed on the dorsal or ventral aspect of the forearm for ER and IR, directly proximal to wrist joint line. Players are asked to perform all strength measures twice with a rest of 30 sec. between the two attempts. The mean of the two attempts is recorded. | 2017 | |
| Primary | passive glenohumeral range of motion in internal and external rotation | Glenohumeral ROM is measured in degrees (°) on both sides using a digital application Clinometer (Plaincode Software Solutions, Peter Breitling, Stephanskirchen Germany, version 4.5 (1511062) on iOS). Participants are placed supine, the shoulder positioned in 90° of abduction, a small towel roll is used to maintain the position of the humerus in neutral and their elbow is flexed to 90°. A splint is fastened around the forearm, to attach the smartphone. The assessor palpates the coracoid process with the thumb and the spine of the scapula with the fingers to control for scapular movement. The shoulder is passively moved to the end of ROM (EOR) into IR and ER. EOR of IR and ER is defined at the point at which the scapula is moving. The mean of two trials for IR and ER is used for data analysis. | 2017 | |
| Primary | scapular dyskinesis | Scapular control is evaluated using the scapular dyskinesis test (SDT). In standing position players held two dumbbells each in one hand. Players are instructed to bilaterally elevate their arms overhead as far as possible to a 3-second count with thumbs positioned upwards and then lower to a 3-second count. Five repetitions are performed while they are visually observed from posterior. The final rating classifies scapula control as normal, subtle abnormal or obvious abnormal. | 2017 | |
| Secondary | core stability | Core stability is assessed using core endurance tests in seconds (s). Tests are performed in a sit up position in 60° Flexion and in side plank position on both sides. Players are instructed to hold their back and hip to the upright position for as long as possible. The test terminates, when the player is not able to hold the position anymore. | 2017 |