What does this research mean for the field?

Both Post-Isometric Relaxation (PIR) and Active Static Stretching (ASS) effectively improve hamstring flexibility, but PIR produces significantly superior improvements compared to ASS in young adults with hamstring tightness. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to evaluate the effectiveness of Post-Isometric Relaxation (PIR) compared to Active Static Stretching (ASS) on hamstring flexibility in young adults.

May 8, 2026Scientific ReportsOpen Access

Comparison of post-isometric relaxation and active static stretching in improving hamstring flexibility among allied health sciences students: a randomized controlled trial

View Full Paper

Ask AI

Bookmark

Authors

TAT ArifUniversity of Health Sciences Lahore WMWajeeha MehmoodUniversity of Health Sciences Lahore TATaqdees ArifUniversity of Health Sciences Lahore

Discussion

Member takes

Implication

Randomized trial compares post-isometric relaxation and active static stretching effects on hamstring flexibility in allied health science students, suggesting superior gains from PIR.

Key Points

This study aims to evaluate the effectiveness of Post-Isometric Relaxation (PIR) compared to Active Static Stretching (ASS) on hamstring flexibility in young adults.
Conducted a single-center, assessor-blinded randomized controlled trial at the University of Health Sciences, Lahore.
Fifty-two students aged 18–25 with hamstring tightness were randomly allocated to PIR (n = 26) or ASS group (n = 26).
Both groups underwent 12 supervised stretching sessions over four weeks.
PIR group showed a significant improvement in flexibility (165.69° ± 6.61) compared to ASS group (158.69° ± 8.23; p = 0.001).
Resolved hamstring tightness in 67.3% of participants, with higher rates in the PIR group.
Both techniques improved flexibility, but PIR demonstrated superior effects.

Cite This Study

Arif et al. (2026) studied this question.

synapsesocial.com/papers/69fd7f65bfa21ec5bbf07dbf https://doi.org/10.1038/s41598-026-52130-5

View Full Paper

Ask AI

Bookmark

Implication

Randomized trial compares post-isometric relaxation and active static stretching effects on hamstring flexibility in allied health science students, suggesting superior gains from PIR.

Comparison of post-isometric relaxation and active static stretching in improving hamstring flexibility among allied health sciences students: a randomized controlled trial

Discussion

Member takes

Implication

Key Points

Cite This Study

Comparison of post-isometric relaxation and active static stretching in improving hamstring flexibility among allied health sciences students: a randomized controlled trial

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider