Can strength training beat stretching for flexibility?

NCT ID NCT07061041

Completed Knowledge-focused Sponsor: Józef Piłsudski University of Physical Education Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares two approaches to improve flexibility of the hamstrings and lower back: static stretching versus full range of motion strength training using the Romanian deadlift. Healthy adults will perform one of the two exercises once a week for six weeks. Flexibility is measured before and after the program to see which method works better.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to

If one method proves superior, it could guide more effective flexibility routines for athletes or rehab.

What could go wrong

This is a small, short-term study in healthy adults, so results may not apply to injured or older populations.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

FLEXIBILITY STATIC STRETCHING STRENGTH TRAINING EFFECTS

Contacts and locations

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Locations

Józef Piłsudski Academy of Physical Education in Warsaw

Warsaw, 00-968, Poland