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OpenTrials
Completed

NCT Number: NCT04448288

Time-based Effects of Stretching on Hamstrings Muscle Strength

Stretching is reported to have detrimental effects on strength and thus avoided prior to strength training session. Do stretching indeed decreases muscle strength? To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.

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Key information

Conditions

Stretch

Age range

24 year–30 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

King Saud University

Riyadh, 11433, Saudi Arabia

About this study

OBJECTIVE: To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.

METHODS: Pretest-posttest experimental design. Total of 14 subjects with mean age 25 years participated in three experimental trials on three different days. On day-I for static-stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Testing was conducted before (pre), immediately after (post), and at 10 and 20 min post stretching. MVCF was measured using strain gauze as the main outcome measure.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subjects used to engage in 1 to 5 hours of physical activity per week. They were not doing stretching exercises regularly.

Exclusion criteria

  • Subjects having any current injury specific to lower limb joints or current neuromuscular disease were excluded from the study.

Treatment and study plan

Static Stretching

Other

Static stretchings were performed by subjects that involved varied repetitions of 30-s static-stretches and 20-s relax period.

Primary outcomes

  1. Change in Maximum voluntary contraction force (MVCF) before and after stretching

    Time frame: MVCF was measured on 3 different days with each day separated by 3-4 days.

    Change in Isometric strength (MVCF) was measured before and after stretching using strain gauge

Sponsors and collaborators

Lead sponsor

King Saud University

Other

Registry information

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Jun 25, 2020
Registry last updated
Jun 25, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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