Time-based Effects of Stretching on Hamstrings Muscle Strength

June 24, 2020 updated by: Masood Khan, King Saud University
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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

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.

Study Type

Interventional

Enrollment (Actual)

14

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Saudi Arabia
      • Riyadh, Saudi Arabia, 11433
        • King Saud University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

24 years to 30 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Hamstring Group
Pretest-posttest experimental design. Subjects 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 main outcome measure. The SS trials involved varied repetitions of 30-s static-stretches and 20-s relax period. MVC force was assessed.
Other: Static stretching
Static stretchings were performed by subjects that involved varied repetitions of 30-s static-stretches and 20-s relax period.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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
MVCF was measured on 3 different days with each day separated by 3-4 days.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

King Saud University

Investigators

  • Principal Investigator: Masood Khan, MPTh, Rehabilitation Research Chair

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 30, 2019

Primary Completion (Actual)

April 15, 2019

Study Completion (Actual)

April 15, 2019

Study Registration Dates

First Submitted

May 6, 2020

First Submitted That Met QC Criteria

June 24, 2020

First Posted (Actual)

June 25, 2020

Study Record Updates

Last Update Posted (Actual)

June 25, 2020

Last Update Submitted That Met QC Criteria

June 24, 2020

Last Verified

June 1, 2020

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • RRC-2019-003

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Stretch

Clinical Trials on Static stretching

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Chile

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe