Time Based Effects of Different Duration Stretching on Calf Muscle Strength

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

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.

Study Overview

• Status: Completed
• Conditions: Muscle Strength
• Intervention / Treatment: Other: Muscle Static Stretching

Detailed Description

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.

• Study Type: Interventional
• Enrollment (Actual): 14
• Phase: Not Applicable

Contacts and Locations

Study Locations

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

Participation Criteria

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 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

Study Plan

How is the study designed?

Design Details

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

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Experimental; 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; 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.

What is the study measuring?

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

Collaborators and Investigators

• Sponsor: King Saud University

Study record dates

Study Major Dates

• Study Start (Actual): January 30, 2019
• Primary Completion (Actual): August 13, 2019
• Study Completion (Actual): August 29, 2019

Study Registration Dates

• First Submitted: July 5, 2020
• First Submitted That Met QC Criteria: July 8, 2020
• First Posted (Actual): July 9, 2020

Study Record Updates

• Last Update Posted (Actual): July 9, 2020
• Last Update Submitted That Met QC Criteria: July 8, 2020
• Last Verified: July 1, 2020

More Information

Terms related to this study

• Keywords: Muscle strength; Calf Muscle; muscle stretching exercises
• Other Study ID Numbers: RRC-2019-05

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No