Morningness vs. eveningness and how quickly healthy adults recover after submaximal exercise

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This cross-sectional observational study will recruit healthy adults aged 18-45 to examine the relationship between circadian preference and cardiovascular recovery after a submaximal exercise test. Participants will complete questionnaires on circadian preference and sleep quality, and then perform a 6-minute walk test with heart rate, oxygen saturation, and perceived exertion recorded during rest, immediately after, and during recovery at 1, 3, and 5 minutes. Analyses will include descriptive statistics, correlations, and multivariable regression to identify associations while adjusting for potential confounders. A minimum sample size of 124 participants is planned to achieve adequate power. Results could help clarify whether circadian factors influence short-term cardiovascular recovery in healthy individuals.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Aged 18-45 years.
* Being healthy.
* Voluntarily agreeing to participate in the study.

Exclusion Criteria:

* Presence of cardiovascular, pulmonary, neurological, or orthopedic disease.
* Having a health problem that prevents exercise.
* Use of medication that may affect exercise tolerance.
* Pregnancy.

Where it's running

• İstanbul Topkapı University
  Istanbul, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Gamze Koyutürk, Asst Prof — Topkapı University
• Study coordinator: Gamze Koyutürk, Asst Prof
• Email: gamzealtinkaynak@gmail.com
• Phone: +905065798671

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.