Time Based Effects of Different Duration Stretching on Calf Muscle Strength

Study Overview
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Brief Summary
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Stretching is reported to decrease muscle strength and thus suggested to be avoided prior to athletic events but with conflicting reports. This time course study aimed to assess acute effects of static stretching of different durations on isometric maximum voluntary contraction force of calf muscle.

Detailed Description
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Stretching is reported to decrease muscle strength and thus suggested to be avoided prior to athletic events but with conflicting reports. This time course study aimed to assess acute effects of static stretching of different durations on isometric maximum voluntary contraction force of calf muscle. Pretest posttest experimental design was used. 14 subjects participated in three experimental trials: Static stretching for 2 minutes (SS2), static stretching for 4 minutes (SS4), and static stretching for 8 minutes (SS8). Strength was measured before (pre), immediately after (post), and at 10- and 20- minutes post stretching. Each static stretching (SS) trial involved varied repetitions of 30-seconds self-stretches and 20-seconds relax periods.

Official Title
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Time-based Effects of Different Duration Stretching on Calf Muscle Strength

Conditions
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Muscle Strength

Intervention / Treatment
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* Other: Muscle Static Stretching


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subjects performed active foot dorsiflexion in long sitting position with back supported against wall and those having not more than 20-degree range of motion were selected Used to engage in 1 to 5 hours of physical activity per week Exclusion Criteria: Subjects having any current injury or limits in range of motion specific to lower limb joints Current neuromuscular disease Competitive athletes were excluded from the study

Ages Eligible for Study
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Minimum Age: 24 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Interventional Model Description: Subjects participated in three experimental trials: Static stretching for 2 minutes (SS2), static stretching for 4 minutes (SS4), and static stretching for 8 minutes (SS8). Strength was measured before (pre), immediately after (post), and at 10- and 20- minutes post stretching.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental<br>subjects participated in three experimental trials: Static stretching for 2 minutes (SS2), static stretching for 4 minutes (SS4), and static stretching for 8 minutes (SS8). Strength was measured before (pre), immediately after (post), and at 10- and 20- minutes post stretching. | Other: Muscle Static Stretching<br>* Static stretching for 2 minutes (SS2), static stretching for 4 minutes (SS4), and static stretching for 8 minutes (SS8). Each static stretching (SS) trial involved varied repetitions of 30-seconds self-stretches and 20-seconds relax periods.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Isometric Maximum Voluntary Contraction Force | Isometric Maximum Voluntary Contraction Force was measured using strain Gauge. | MVCF at baseline and 0, 10, 20-min post stretching | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Muscle strength, muscle stretching exercises, Calf Muscle