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Circadian Rhythm and Cardiovascular Recovery After Submaximal Exercise

16. Oktober 2026 aktualisiert von: Gamze Altınkaynak, Saglik Bilimleri Universitesi

Relationship Between Cardiovascular Recovery After a Submaximal Exercise Test and Circadian Rhythm: A 6-Minute Walk Test-Based Study

This cross-sectional, observational, and analytical study aims to investigate the relationship between morningness-eveningness characteristics and cardiovascular recovery after a submaximal exercise test in healthy individuals aged 18-45 years. Circadian preference will be assessed using the Morningness-Eveningness Questionnaire, sleep quality will be assessed using the Pittsburgh Sleep Quality Index, and cardiovascular recovery will be evaluated following the 6-Minute Walk Test

Studienübersicht

Status

Rekrutierung

Bedingungen

Detaillierte Beschreibung

The study will include healthy volunteers aged 18-45 years. After written informed consent is obtained, participants will complete a sociodemographic information form, the Morningness-Eveningness Questionnaire, and the Pittsburgh Sleep Quality Index. Resting heart rate, oxygen saturation, and Borg dyspnea/fatigue scores will then be recorded, followed by the 6-Minute Walk Test. Physiological measurements will be repeated immediately after the test and at the 1st, 3rd, and 5th minutes of recovery.

The planned sample size is at least 124 participants. This was calculated using G*Power 3.1.9.7 based on a medium effect size (r=0.30), a significance level of 5% (α=0.05), and 90% statistical power, with an additional 10% allowance for possible data loss or missing data. Data will be analyzed using descriptive statistics, normality analyses, appropriate parametric or non-parametric comparison tests, correlation analyses, and multivariable regression analyses, with statistical significance set at p<0.05.

Studientyp

Beobachtungs

Einschreibung (Geschätzt)

124

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Name: Gamze Koyutürk, Asst Prof
Telefonnummer: +905065798671
E-Mail: gamzealtinkaynak@gmail.com

Studieren Sie die Kontaktsicherung

Name: Mehmet Burak Uyaroğlu, Asst Prof
Telefonnummer: 5396545352
E-Mail: m.uyaroglu1@gmail.com

Studienorte

Türkei (türkiye)
- - Istanbul, Türkei (türkiye)
    - Rekrutierung
    - İstanbul Topkapı University
    - Kontakt:
      
      Gamze Koyutürk, Asst. Prof
      
      Telefonnummer: 5065798671
      
      E-Mail: gamzekoyuturk@topkapi.edu.tr

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre bis 45 Jahre (Erwachsene)

Akzeptiert gesunde Freiwillige

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

Healthy volunteers aged 18-45 years who meet the study eligibility criteria and agree to participate voluntarily.

Beschreibung

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.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Beobachtungsmodelle: COHORT
Zeitperspektiven: PROSPECTIVE

Anzahl der Gruppen / Kohorten

Kohorten und Interventionen

Gruppe / Kohorte
Single Group Healthy volunteers aged 18-45 years. Participants will complete a sociodemographic information form, the Morningness-Eveningness Questionnaire, and the Pittsburgh Sleep Quality Index. Resting heart rate, oxygen saturation, and Borg dyspnea/fatigue scores will be recorded, followed by the 6-Minute Walk Test. Physiological measurements will also be obtained immediately after the test and at the 1st, 3rd, and 5th minutes of recovery. No intervention will be administered

Gruppe / Kohorte

Single Group

Healthy volunteers aged 18-45 years. Participants will complete a sociodemographic information form, the Morningness-Eveningness Questionnaire, and the Pittsburgh Sleep Quality Index. Resting heart rate, oxygen saturation, and Borg dyspnea/fatigue scores will be recorded, followed by the 6-Minute Walk Test. Physiological measurements will also be obtained immediately after the test and at the 1st, 3rd, and 5th minutes of recovery. No intervention will be administered

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme	Maßnahmenbeschreibung	Zeitfenster
Heart Rate Recovery After the 6-Minute Walk Test Zeitfenster: Baseline and up to 5 minutes post-exercise	Heart rate will be recorded at rest, immediately after the 6-Minute Walk Test, and at the 1st, 3rd, and 5th minutes of the recovery period to evaluate cardiovascular recovery following submaximal exercise.	Baseline and up to 5 minutes post-exercise

Sekundäre Ergebnismessungen

Ergebnis Maßnahme	Maßnahmenbeschreibung	Zeitfenster
Oxygen Saturation (SpO₂) During Post-Exercise Recovery Zeitfenster: Up to 5 minutes after the 6-Minute Walk Test	Oxygen saturation will be recorded at rest, immediately after the 6-Minute Walk Test, and at the 1st, 3rd, and 5th minutes of recovery.	Up to 5 minutes after the 6-Minute Walk Test
Borg Dyspnea/Fatigue Score During Post-Exercise Recovery Zeitfenster: Baseline and up to 5 minutes post-exercise	Dyspnea and fatigue will be assessed using the Borg Dyspnea/Fatigue Scale at rest, immediately after the 6-Minute Walk Test, and at the 1st, 3rd, and 5th minutes of recovery.	Baseline and up to 5 minutes post-exercise
Morningness-Eveningness Characteristics Zeitfenster: Baseline	The Morningness-Eveningness Questionnaire assesses individuals' preference for the timing of sleep and daily activities. Scores range from 16 to 86, with higher scores indicating a stronger morning preference and lower scores indicating a stronger evening preference, rather than better or worse outcomes.	Baseline
Sleep Quality Zeitfenster: Baseline	Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI), which evaluates sleep quality and disturbances over the past month. The global score ranges from 0 to 21, with higher scores indicating poorer sleep quality.	Baseline

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Saglik Bilimleri Universitesi

Ermittler

Hauptermittler: Gamze Koyutürk, Asst Prof, Topkapı University
Studienleiter: Mehmet B Uyaroğlu, Asst Prof, Fenerbahce University
Studienstuhl: Beyza Erdoğmuş, Dr
Studienstuhl: Hüsna Güzel, MsC, Fenerbahce University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Oktober 2026

Primärer Abschluss (Geschätzt)

31. März 2027

Studienabschluss (Geschätzt)