The Effects of a Train High, Sleep Low Strategy

NCT ID: NCT03045588

Last Updated: 2018-10-24

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2016-10-01
• Study Completion Date: 2018-10-10

Brief Summary

The investigators will examine the long-term effects of a combined training and diet intervention that, acutely, increases fat oxidation during exercise. This is done with a 4 week intervention study with moderately trained cyclists. Performance is tested pre and post intervention and muscle biopsies are obtained.

Conditions

Cycling Performance; Muscular Adaptations; Substrate Utilization

Study Design

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

Study Groups

Low group

This subjects in this group conducts all their morning exercise sessions with high fat oxidation (in a fasted condition). Thus, the subjects in this group after high intensity exercise in the evening do not get any carbohydrates to eat after training until the exercise session the following morning has been conducted.

Group Type: EXPERIMENTAL

Combined exercise and diet intervention

Intervention Type: OTHER

Both groups exercise 6 times per week in 4 weeks conducted as 3 evening and 3 morning sessions per week. Both groups receive dietary products to be consumed immediately before and after each evening and morning session, respectively. One group conduct morning sessions in a fasted state, the other conduct the morning sessions in a fed state. Performance pre and post is measured, and muscle biopsies are obtained.

High group

This subjects in this group conducts all their morning exercise sessions with low fat oxidation (in a fed condition). Thus, the subjects in this group after high intensity exercise in the evening do get carbohydrates to eat after training until the exercise session the following morning has been conducted.

Group Type: ACTIVE_COMPARATOR

Combined exercise and diet intervention

Intervention Type: OTHER

Both groups exercise 6 times per week in 4 weeks conducted as 3 evening and 3 morning sessions per week. Both groups receive dietary products to be consumed immediately before and after each evening and morning session, respectively. One group conduct morning sessions in a fasted state, the other conduct the morning sessions in a fed state. Performance pre and post is measured, and muscle biopsies are obtained.

Interventions

Combined exercise and diet intervention

Both groups exercise 6 times per week in 4 weeks conducted as 3 evening and 3 morning sessions per week. Both groups receive dietary products to be consumed immediately before and after each evening and morning session, respectively. One group conduct morning sessions in a fasted state, the other conduct the morning sessions in a fed state. Performance pre and post is measured, and muscle biopsies are obtained.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• 18-45 years
• VO2-max>55 ml/kg/min
• No smokers
• Training 6 hours per week (cycling)
• Training experience for more than 3 years.

Exclusion Criteria

• Less than 2 g carbohydrate/kg/day

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 45 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Team Denmark

OTHER

Sponsor Role: collaborator

University of Aarhus

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Other Identifiers

Sleep low

Identifier Type: -

Identifier Source: org_study_id