Do smartwatches tell the truth about your activity?
NCT ID NCT07389369
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at 120 university students to see if their smartwatch step counts matched what they reported on a physical activity questionnaire. Participants wore an Apple Watch and filled out a short survey about their weekly activity. The goal was to understand if objective data from a smartwatch agrees with subjective self-reports.
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 successful, this could show that smartwatches are a reliable way to measure physical activity in young adults, potentially improving how activity is tracked in research.
- What could go wrong
- This is a small, completed observational study in a specific group (university students in Istanbul). Results may not apply to other ages or populations, and the study does not test any treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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120 people
The number who actually took part.
- Started
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Mar 2025
- Finished
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Sep 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.
Who is studied
120 university students who take classes
- Ages
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18 to 28 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: * being a student at Istanbul Aydın University, * age between 18 and 28 years, * regular use of an Apple Watch, * voluntary participation. Exclusion criteria: * presence of chronic diseases, * physical or mental disabilities that could potentially affect physical activity levels, * being a professional athlete.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
İstanbul Aydin University
Istanbul, Bakırköy, Turkey (Türkiye)
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