Time-based Effects of Stretching on Hamstrings Muscle Strength

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04448288

Enrollment

Registered

2020-06-25

Start date

2019-01-30

Completion date

2019-04-15

Last updated

2020-06-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stretch

Keywords

Stretching, Muscle strength, Hamstring Muscles

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.

Interventions

OTHERStatic stretching

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

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

OTHER

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

24 Years to 30 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame	Description
Change in Maximum voluntary contraction force (MVCF) before and after stretching	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

Countries

Saudi Arabia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026