How little stretching do you really need? new study aims to find out
NCT ID NCT06960590
First seen Jun 24, 2026 · Last updated Aug 12, 2026 · Updated 3 times
Summary
This study tested 51 healthy adults to find the smallest weekly dose of static stretching that still improves flexibility. Participants did 1 to 3 stretching sessions per week for 6 weeks, with total stretching time ranging from 45 to 135 seconds per week. The goal is to replace guesswork with evidence-based stretching recommendations.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- static stretching
- What this could lead to
- If successful, this could provide clear, simple guidelines on the minimum stretching needed to improve flexibility, saving time for people who exercise or do physical therapy.
- What could go wrong
- This is a small, early-stage study with only 51 participants. The results may not apply to everyone, and the exact minimal dose may still be unclear.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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300 people
The number who actually took part.
- Started
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Mar 2025
- Finished
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Aug 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 25 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age over 18 years, * No lower limb injuries, no spinal injuries and no craniocerebral injuries in the last 6 months, * No lower limb surgeries, no spinal surgeries and no central nervous system surgeries in the last 6 months, Exclusion Criteria: * Age under 18 years * Injuries to the lower limbs, spine or craniocerebral injuries within the last 6 months, * Surgical procedures to the lower limbs, spine or surgical procedures to the central nervous system within the last 6 months,
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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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Józef Piłsudski Academy of Physical Education in Warsaw
Warsaw, Poland
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