Exercise vs. stretching: which boosts flexibility more?
NCT ID NCT06469346
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two methods to improve hamstring flexibility: eccentric exercise (like Nordic curls) and static stretching. Researchers will measure changes in knee extension and sit-and-reach distance in 42 healthy young men over 6 weeks. The goal is to see if eccentric exercise can increase flexibility as effectively as stretching, while also building strength.
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 it works, this could show that eccentric exercise is as good as or better than stretching for flexibility, with added strength benefits.
What could go wrong
This is a small, early-stage study in healthy young men only. Results may not apply to other groups or to injury prevention.
Disclaimer
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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.
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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Contacts and locations
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Locations
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Universidad de La Frontera
Temuco, Cautín, 4780000, Chile