NCT07234812

Resistance Exercise and Sleep Quality by Chronotype

The Effects of Tailored Resistance Exercise on Sleep Quality in Relation to Chronotype

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 64 (estimated)
• Sponsor: Medipol University · Academic / Other
• Sex: All
• Age: 18 Years – 35 Years
• Healthy volunteers: Accepted

Summary

This study examines whether doing moderate resistance exercises in the morning can improve sleep quality and well-being in young adults. Participants with different daily activity patterns (morning or evening types) will take part in an 8-week online exercise program. The study will compare how exercise affects sleep, mood, and daily rhythm across these groups.

Detailed description

Disturbed sleep is a widespread issue that affects health, mood, and daily function. Chronotype-the natural tendency to be active earlier or later in the day-may influence how people respond to exercise as a tool for improving sleep. This trial investigates the effects of an 8-week, moderate-intensity resistance exercise program performed in the morning, delivered through telerehabilitation. Participants include healthy young adults with self-identified morning or evening chronotypes. The study will measure changes in sleep quality, psychological well-being, alignment of daily rhythms, and will explore whether men and women respond differently to the program.. By comparing outcomes between chronotypes, this research aims to clarify whether exercise benefits are shaped by biological preference for morning or evening activity, or whether improvements occur regardless of chronotype. The central question is whether improvements occur equally across chronotypes, or if biological preference shapes the response to exercise. Null Hypothesis (H0): Moderate-intensity morning resistance exercise will have no differential effect on sleep quality, mood, or circadian alignment between participants with morning and evening chronotypes. Alternative Hypothesis (H1):Moderate-intensity morning resistance exercise will have a differential effect on sleep quality, mood, or circadian alignment between participants with morning and evening chronotypes.

Conditions

• Physical Therapy
• Resistance Exercise
• Sleep Disturbances
• Sleep Quality
• Chronotype
• Circadian Rhythm
• Health Behavior / Well-Being

Interventions

Type	Name	Description
BEHAVIORAL	Moderate-Intensity Resistance Exercise Program	An 8-week, moderate-intensity resistance exercise program performed in the morning, 3 sessions/week on nonconsecutive days. Each 45-min session includes: 5-min warm-up (jumping jacks, high knees, running in place, hip hinge with reach, standing twists); 35-min progressive resistance training (Chest Press (Modified Push-Ups), Leg Press (Wall Sits with Squats), Squats, Shoulder Press (Resistance Band Overhead Press), Lat Pulldown (Resistance Band Pull-Downs), Rowing (Resistance Band Rows), Lower Back (Superman Holds), and Abdominals (Plank with Crunches)); and 5-min cool-down (Chest and Shoulder Stretch, Kneeling Hip Flexor Stretch, Standing Hamstring Stretch, Child's Pose with Side Stretch, and Cat-Cow Stretch ). Muscle soreness tracked after each session using 7-point Likert scale. Standardized videos, adherence checklists, resistance bands provided. Both chronotype groups complete identical sessions, outcomes compared.

Timeline

• Start date: 2025-12-01
• Primary completion: 2026-03-01
• Completion: 2026-05-01
• First posted: 2025-11-18
• Last updated: 2025-11-20

Locations

1 site across 1 country: Turkey (Türkiye)