Timing and Resistance Exercise: Impact on Eating and Metabolism

NCT ID: NCT06549322

Last Updated: 2024-08-12

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 18 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-09-01
• Study Completion Date: 2025-12-30

Brief Summary

Exercise timing (morning or evening) for optimal weight control is a research topic urgently addressed by scholars in the relevant field. Due to the better control of energy metabolism and physical activity levels in the morning, existing research on resistance exercise and eating behavior primarily focuses on experiments conducted in the morning, with only one study in the afternoon. No research has yet compared the potential differences between morning and evening resistance exercise. A one-year study aims to investigate the impact of morning and evening resistance exercise on physiological metabolism and eating behavior. Eighteen healthy male participants will be randomly assigned to a crossover design study, including AM exercise, PM exercise, and control (rest condition) trials. Variables including subjective appetite, appetite hormones (ghrelin, peptide YY), food preferences, ad libitum eating, dietary records, energy expenditure, and PBMCs circadian rhythm genes will be measured. This preliminary study through a multidimensional observation, the results will contribute to understanding the potential differences and mechanisms of morning and evening resistance exercise on physiological metabolism and eating behavior. In practical applications, conducting resistance exercise in the evening or at night aligns better with current lifestyles. The findings of this study can support the optimization of exercise benefits by validating the choice of exercise timing.

Conditions

Circadian Rhythm; Energy Balance; Appetitive Behavior; Food Reward

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

The exercise in morning

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Group Type: EXPERIMENTAL

The exercise in morning

Intervention Type: OTHER

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Exercise timing: AM 11:00-11:30

The exercise in evening

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Group Type: EXPERIMENTAL

The exercise in evening

Intervention Type: OTHER

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Exercise timing: PM 05:00-05:30

The control in all day

Sit and rest in the morning and evening during the day.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

The exercise in morning

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Exercise timing: AM 11:00-11:30

Intervention Type: OTHER

The exercise in evening

Resistance exercises are in the following order: squat, bench press, deadlift. Each exercise consists of 3 sets with 7 repetitions, using a load of 70% 1RM with 60 sec of rest between sets.

Exercise timing: PM 05:00-05:30

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Age: 20-30
• weight stable for at least 6 months

Exclusion Criteria

• Obesity (BMI > 30 kg/m² or body fat percentage > 25%)
• Hypertension (blood pressure over 140/90 mmHg)
• Heart disease
• Cancer
• Liver or kidney diseases
• Any other conditions that could potentially influence the study's outcomes

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

National Taiwan Normal University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Hung-wen Liu, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

National Taiwan Normal University

Locations

National Taiwan Normal University

Taipei, , Taiwan

Countries

Taiwan

Central Contacts

Hung-wen Liu, Ph.D.

Role: CONTACT

hwliu@ntnu.edu.tw

+886 0277496863

Facility Contacts

Hung Wen Liu, Ph.D.

Role: primary

+886 0277496863

Other Identifiers

202401HM008

Identifier Type: -

Identifier Source: org_study_id