Acute Effects of Static Stretching on the Shoulder Joint Position Sense of Overhead Athletes

University Fernando Pessoa17 enrolled

Overview

The purpose of the study is to investigate the acute effects of static stretching on the shoulder joint position sense of overhead athletes.

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

HEALTH_SERVICES_RESEARCH

Masking

NONE

Enrollment

Conditions

Healthy

Interventions

Static StretchingOTHER

* 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.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 30 YearsHealthy volunteers:

Medical Language ↔ Plain English

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)

Locations (1)

Escola Superior Saúde Fernando Pessoa

Porto, Portugal

Outcomes

Primary Outcomes

Absolute angular error

The absolute value of the difference between the target range and the achieved range

Time frame: Change from Baseline (Before) to Immediately after interventions or control (After)

Relative angular error

The arithmetic difference between the target range and the range achieved

Time frame: Change from Baseline (Before) to Immediately after interventions or control (After)

Variable angular error

The standard deviation of the 3 repositionings

Time frame: Change from Baseline (Before) to Immediately after interventions or control (After)

Data from ClinicalTrials.gov

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