Effects of Stretching on Strength of Proximal and Distal Group of Muscles - A Comparative Study

STRETCHING Clinical Trial

Official title:

Effects of Stretching on Strength of Proximal and Distal Group of Muscles - A Comparative Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04453644
• Other study ID #: RRC-2019-06
• Status: Completed
• Phase: N/A
• Start date: January 23, 2019
• Est. completion date: September 5, 2019

Study information

• Verified date: June 2020
• Source: King Saud University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Muscular flexibility is believed to prevent injuries and improve movement therefore most coaches include stretching exercises in their pre-competition and pre-exercise warm-up routines. One question arises here, should sports persons avoid stretching exercises prior to sporting events thereby exposing themselves to musculoskeletal injuries, or should they continue stretching exercises prior to sporting events and risk losing the maximal performance? The aim of this study is to compare the effects of 2, 4, and 8 min of static stretching (SS) on isometric maximum voluntary contraction (MVCF) force between proximal (Hamstrings) and distal group (Calf) of muscles.

Description:

OBJECTIVE: To compare the effects of 2, 4, and 8 min of static stretching (SS) on isometric maximum voluntary contraction (MVCF) force between proximal (Hamstrings) and distal group (Calf) of muscles.

DESIGN: Two-group pretest-posttest experimental design. METHODS: Each subject visited the Rehabilitation center on three days: On day-I for static stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Isometric Maximum Voluntary Contraction Force (MVCF) measurement was done prior (Pre), 0-min, 10-min, and 20-min post-intervention (i.e. stretching). Each visit was separated by a gap of at least 3-4 days. On each visit, each subject underwent (a). Pre-intervention evaluation, (b). Intervention, (c). Post-intervention evaluation. Subjects performed stretching exercises under the supervision of expert Physical Therapist. The outcome assessor who was kept blind to study protocol did all measurements.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 28
• Est. completion date: September 5, 2019
• Est. primary completion date: July 17, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 22 Years to 30 Years

Eligibility

Inclusion Criteria:

For group A: subjects performed active knee extension test and those lacking at least 20 degrees of active knee extension range, with hip in 90 degree of flexion were selected. For group B (Calf): Subjects performed active foot dorsiflexion in long sitting position with back supported against the wall and those having not more than 20-degree range of motion were selected.

Selected subjects used to engage in 1-5 hours of regular physical activity per week (recreationally active) that does not involve stretching exercise

Exclusion Criteria:

Subjects reporting any current or ongoing neuromuscular disease, injury specific to lower limb joints, any apparent limit in knee or ankle ROM and competitive/professional athletes were excluded from study.

Related Conditions & MeSH terms

• STRETCHING

Intervention

Other:
• Muscle static stretching
On day-I: Static Stretching done for 2 minutes (SS2), on day-II: Static Stretching done for 4 minutes (SS4), and on day-III: Static Stretching done for 8 minutes (SS8).

Locations

Country	Name	City	State
Saudi Arabia	King Saud University	Riyadh

Sponsors (1)

Lead Sponsor	Collaborator
King Saud University

Country where clinical trial is conducted

Saudi Arabia, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in isometric maximum voluntary contraction force before and after stretching	Change in isometric muscle strength measured before and after stretching using strain gauge on 3 different days	MVCF was measured immediately (0 min), 10-min and 20 min post intervention on 3 different days, with each day separated by gap of 3-4 days.