NCT04611646

Effects of Heat-suit Training on Biological and Performance Characteristics in Elite Cyclists

Effects of Heat-suit Training on Training-associated Changes in Hemoglobin Mass, Muscle Characteristics and Endurance Performance in Elite Cyclists

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 53 (actual)
• Sponsor: Inland Norway University of Applied Sciences · Academic / Other
• Sex: All
• Age: 18 Years – 45 Years
• Healthy volunteers: Accepted

Summary

The overall objective of the study is to investigate the effects of five weeks of heat-suit training on training-associated changes in hemoglobin mass, skeletal muscle characteristics and endurance exercise performance in elite cyclists

Detailed description

Endurance exercise performance depends on a range of determinants, including hemoglobin mass in blood and content of respiratory mitochondria in skeletal muscle. Low-intensity training (LIT) with heat exposure may be beneficial for development of these variables. The purpose of this study is to investigate the effects of five weeks of LIT-training with heat suit (five times a week; 50 min per session) on hemoglobin mass and other blood characteristics in elite cyclists (males and females) compared to a non-heat-suit training control group, including subsequent investigation of the retrograde effects of \~one month of training without heat suit. The study will also investigate the effects of heat-suit training on endurance exercise performance/performance determinants and other muscle biological charateristics, and will investigate the basic characteristics of mitochondrial function and abundances in these highly trained athletes. Training sessions with heat suit (or lack thereof) will complement the habitual training routines of the participants.

Conditions

• Heat-suit Endurance Training
• Non-heat-suit Endurance Training

Interventions

Type	Name	Description
BEHAVIORAL	Heat-suit endurance training	Participants (elite cyclists) will conduct five 50-minute low-intensity cycling sessions with heat suit per week for five weeks. These sessions will complement their habitual training routines, which will consist of endurance training with intensities at or below lactate threshold. Participants will ingest 100 mg Fe2+ on a daily basis to support de novo synthesis of hemoglobin
BEHAVIORAL	Non-heat-suit endurance training	Participants (elite cyclists) will conduct low-intensity cycling without heat suit for five weeks (volume- and intensity-matched to the heat-suit arm). Participants will ingest 100 mg Fe2+ on a daily basis to support de novo synthesis of hemoglobin

Timeline

• Start date: 2020-10-19
• Primary completion: 2020-12-13
• Completion: 2020-12-13
• First posted: 2020-11-02
• Last updated: 2021-03-01

Locations

1 site across 1 country: Norway