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"Comparative Effects of PIR and Static Stretching on Hamstring Flexibility" Post-Isometric Relaxation

NCT07153510 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 54

Last updated 2025-09-04

No results posted yet for this study

Summary

Hamstring tightness is a common problem among students and young adults, often leading to reduced flexibility, musculoskeletal discomfort, and risk of injury. Different stretching methods are used in physiotherapy practice to improve muscle length and flexibility. Post-Isometric Relaxation (PIR), a type of muscle energy technique, and Active Static Stretching (ASS) are two commonly applied methods, but evidence comparing their effectiveness in improving hamstring flexibility among Allied Health Sciences students remains limited.

This randomized controlled trial aims to compare the effects of PIR and Active Static Stretching on hamstring flexibility in healthy university students. Participants will be randomly assigned to either PIR or ASS groups and undergo stretching sessions for a specified duration. Hamstring flexibility will be measured using the Active Knee Extension test before and after the intervention. The findings will provide evidence to guide physiotherapy education and clinical practice on the most effective stretching technique for improving hamstring flexibility.

Conditions

  • Hamstring Tightness
  • Hamstring Flexibility

Interventions

OTHER

Post-Isometric Relaxation

Participants will undergo Post-Isometric Relaxation technique targeting the hamstring muscles. The technique involves an isometric contraction of the hamstring followed by a passive stretch. Participant will be in supine position; hip at 90° flexion, Isometric contraction of hamstrings for 7 seconds, Followed by 15 seconds of passive stretch, 10 repetitions, 3 times/week for 4 weeks

OTHER

Active Static Stretching

Participants will perform Active Static Stretching exercises for the hamstrings, where the stretch is held actively without assistance.Seated long sitting position. Participant actively stretches hamstrings for 30 seconds. 10 repetitions, 3 times/week for 4 week

Sponsors & Collaborators

  • University of Health Sciences Lahore

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
25 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-04-01
Primary Completion
2025-09-01
Completion
2025-09-10

Countries

  • Pakistan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07153510 on ClinicalTrials.gov