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.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Universidad de La Frontera
Temuco, Cautín, 4780000, Chile
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