Healthy
Conditions
Keywords
Static Stretching, Joint Position Sense, Proprioception, Shoulder, Overhead Athletes
Brief summary
The purpose of the study is to investigate the acute effects of static stretching on the shoulder joint position sense of overhead athletes.
Detailed description
A crossover randomized controlled trial will be conducted with 17 overhead athletes (9 males and 8 females). All of them will perform the 3 study conditions in random order: a control (5-minute rest), and static stretching of 30 or 90 seconds of muscles around the shoulder. The shoulder joint position sense will be assessed before and immediately after these conditions, and tested by active repositioning for the range of 110º of flexion, with a video camera. Absolute, relative and variable angular errors will be calculated.
Interventions
OTHERStatic Stretching
* Shoulder extension - shoulder extension with the hand resting on a door; * Doorway stretch - horizontal abduction with the shoulder in 90º of abduction, the elbow in 90º of flexion and the forearm leaning against a door; * Shoulder flexion - arms above the head against a wall; * Cross-body stretch - maximal horizontal adduction of the arm, with the opposite hand holding the stretch; * Overhead triceps - arm above the head and elbow flexed, with the other hand pulling the elbow; * Internal Rotation 90° stretch - with the shoulder at 90º of flexion and the elbow at 90º of flexion, the opposite hand and forearm forces the internal rotation.
Sponsors
University Fernando Pessoa
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Subjects aged between 18 and 30 years * Competitive overhead athletes (basketball, handball, volleyball, swimming) * Normal range of motion of flexion of the shoulder
Exclusion criteria
* History of injury of the shoulder joint in the previous 6 months * Positive shoulder joint integrity tests (anterior drawer; fulcrum test; Jerk test; and sulcus sign)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Absolute angular error | Change from Baseline (Before) to Immediately after interventions or control (After) | The absolute value of the difference between the target range and the achieved range |
| Relative angular error | Change from Baseline (Before) to Immediately after interventions or control (After) | The arithmetic difference between the target range and the range achieved |
| Variable angular error | Change from Baseline (Before) to Immediately after interventions or control (After) | The standard deviation of the 3 repositionings |
Countries
Portugal
Outcome results
None listed