Time-based Effects of Stretching on Hamstrings Muscle Strength

NCT ID: NCT04448288

Last Updated: 2020-06-25

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 14 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-01-30
• Study Completion Date: 2019-04-15

Brief Summary

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.

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.

Conditions

Stretch

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

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.

Group Type: EXPERIMENTAL

Static stretching

Intervention Type: OTHER

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

Interventions

Static stretching

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

Intervention Type: OTHER

Eligibility Criteria

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.

• Minimum Eligible Age: 24 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

King Saud University

OTHER

Sponsor Role: lead

Responsible Party

Masood Khan

Principal investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Masood Khan, MPTh

Role: PRINCIPAL_INVESTIGATOR

Rehabilitation research chair

Locations

King Saud University

Riyadh, , Saudi Arabia

Countries

Saudi Arabia

Other Identifiers

RRC-2019-003

Identifier Type: -

Identifier Source: org_study_id