Healthy
Conditions
Keywords
Static Stretching, Joint Position Sense, Proprioception, Ankle, Soccer
Brief summary
The aim of this study isto investigate the influence of acute static stretching on the ankle joint position sense of soccer players.
Detailed description
This crossover randomized controlled trial will include semi-professional soccer players. All participants will perform 3 conditions: two experimental conditions, of static stretching of the gastrocnemius and tibialis anterior muscles, for 30 seconds or 90 seconds; and a control condition (rest). Ankle joint position sense of the dominant limb will be assessed before and immediately after the conditions for the range of 20º of plantar flexion by active repositioning, and using a video camera. Absolute, relative and variable angular errors will be calculated.
Interventions
OTHERStatic Stretching
The static stretching protocol will include the following muscle groups of the dominant lower limb: * Gastrocnemius - Participants will assume a bipedal position facing a wall. Then, the leg that is not being stretched will be placed forward, with the knee in semi-flexion, and the leg that is being stretched, behind, with the knee in full extension. Instructions will be given in order to keep the calcaneus on the floor; * Tibialis anterior - Participants will be facing a wall, with the entire foot in touch with the ground and toes pointing forward. Then, they will secure themselves to a handrail and project the hips back. These stretchings will be held in a position where the participants refer discomfort, and will be maintained for 30 seconds or 90 seconds according to the condition.
Sponsors
University Fernando Pessoa
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Eligibility
Sex/Gender
MALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* male soccer players from the senior level * aged between 18 and 30 years old * with normal plantar flexion range of motion * without history of lower limb injuries in the last 6 months
Exclusion criteria
* those with cardiorespiratory, vestibular or neurological diseases * with bone or joint deformities in the lower limb * cerebral concussion in the last 3 months * history of lower limb surgery * those with positive ankle integrity tests (anterior drawer test, talus tilt test and external rotation stress test)
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