The Effect of Circadian Rhythm on Physical Performance in Healthy Male Individuals

NCT ID: NCT06311539

Last Updated: 2024-03-15

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-04-01
• Study Completion Date: 2024-10-01

Brief Summary

Little is known about optimizing the timing of exercise periods to maximize the health benefits of exercise. Furthermore, exercise is a potent modulator of skeletal muscle metabolism and it is clear that skeletal muscle has a robust circadian profile. Circadian rhythms can be observed in behavior, physiology, and metabolism. Various studies show that exercise changes the rhythm of the clock machines in skeletal muscle. Studies examining the relationship between exercise, especially strength training, and circadian rhythm are quite limited in the literature. Although some studies have shown that force peaks in the afternoon/evening hours, regardless of muscle group and contraction speed, there are no studies on how much this time interval varies from person to person and chronotype.

The aim of this study is to investigate to what extent strength training given at appropriate times for morning, evening and intermediate chronotypes creates changes in performance in healthy adult male individuals.

Detailed Description

After participants are informed about the research, evaluation and exercise protocol, their signed consent will be obtained.

The Morningness-Eveningness Questionnaire will be applied until 30 participants with morning type and 30 evening type chronotypes are reached. (Estimated for 100 students) After determining 30 morning type and 30 evening type participants, isokinetic evaluations will be made and vertical jump heights will be measured (T0).

Then, 15 morning type participants will be included in the morning exercise program (08:00) and 15 morning type participants will be included in the evening exercise program (18:00).

15 evening type participants will be included in the morning exercise program (08:00) and 15 evening type participants will be included in the evening exercise program (18:00).

Thus, some of the participants from both morning and evening groups will be included in strength training for 6 weeks, at a time appropriate to their chronotypes, and some at a time incompatible with their chronotypes. Isokinetic evaluations and vertical jump height measurements will be repeated at the end of the strengthening exercise program, which will last 3 days a week for 6 weeks, a total of 18 sessions.

Conditions

Chronotype; Exercise

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: SCREENING
• Blinding Strategy: SINGLE

Study Groups

Morning chronotype

Participants who score between 59-70 in the Morningness Eveningness Questionnaire will be assigned to the morning chronotype group.

Group Type: EXPERIMENTAL

Theraband Strengthening Exercise Program

Intervention Type: OTHER

Resisted knee flexion in prone position and resisted knee extension in seated position (for dominant leg) and bilateral squats were practiced in 3 sets of 12 repetitions. Participants rested for 30 seconds between sets. The program, which lasted approximately 30 minutes in total, continued for a total of 6 weeks, the first 3 weeks with the red theraband and the last 3 weeks with the black theraband.

15 morning type participants will be included in the morning exercise program (08:00) and 15 morning type participants will be included in the evening exercise program (18:00).

15 evening type participants will be included in the morning exercise program (08:00) and 15 evening type participants will be included in the evening exercise program (18:00).

Evening chronotype

Participants who score between 16-41 in the Morningness Eveningness Questionnaire will be assigned to the evening chronotype group.

Group Type: EXPERIMENTAL

Theraband Strengthening Exercise Program

Intervention Type: OTHER

Resisted knee flexion in prone position and resisted knee extension in seated position (for dominant leg) and bilateral squats were practiced in 3 sets of 12 repetitions. Participants rested for 30 seconds between sets. The program, which lasted approximately 30 minutes in total, continued for a total of 6 weeks, the first 3 weeks with the red theraband and the last 3 weeks with the black theraband.

15 morning type participants will be included in the morning exercise program (08:00) and 15 morning type participants will be included in the evening exercise program (18:00).

15 evening type participants will be included in the morning exercise program (08:00) and 15 evening type participants will be included in the evening exercise program (18:00).

Interventions

Theraband Strengthening Exercise Program

Resisted knee flexion in prone position and resisted knee extension in seated position (for dominant leg) and bilateral squats were practiced in 3 sets of 12 repetitions. Participants rested for 30 seconds between sets. The program, which lasted approximately 30 minutes in total, continued for a total of 6 weeks, the first 3 weeks with the red theraband and the last 3 weeks with the black theraband.

15 morning type participants will be included in the morning exercise program (08:00) and 15 morning type participants will be included in the evening exercise program (18:00).

15 evening type participants will be included in the morning exercise program (08:00) and 15 evening type participants will be included in the evening exercise program (18:00).

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Being male,
• Between the ages of 18-30
• Having a chronotype that was morning person or evening person in the Morningness-Eveningness Questionnaire

Exclusion Criteria

• Being female
• Having an intermediate chronotype in the Morningness-Eveningness Questionnaire
• Having a history of surgery or limitation in the knee area
• Having a metabolic, neurological, or orthopedic disorder.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Istanbul Bilgi University

OTHER

Sponsor Role: lead

Responsible Party

Furkan Çakır

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Ilksan Demirbuken, PhD

Role: STUDY_DIRECTOR

Marmara University, Faculty of Health Sciences

Ender Ersin Avci, PhD

Role: STUDY_DIRECTOR

Marmara University, Faculty of Health Sciences

Mine Gulden Polat, PhD

Role: STUDY_DIRECTOR

Marmara University

Central Contacts

Furkan Cakir, MSc

Role: CONTACT

fztfurkancakir@gmail.com

5426033944 ext. +90

Other Identifiers

IstanbulBUFC4

Identifier Type: -

Identifier Source: org_study_id