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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

53 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-10-19

Study Completion Date

2020-12-13

Brief Summary

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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

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Detailed Description

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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

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

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The study will be conducted as a five-week intervention. In the heat-suit arm, participants will conduct a 50-minute low-intensity cycling session with heat suit five time a week. In the none-heat-suit arm, participants will conduct similar amounts of low-intensity cycling without heat suit. These training sessions will complement the habitual training of the participants. Participants will be allocated into the two arms in a planned randomized manner. In short, participants will be stratified based on baseline performance levels (VO2max), whereby they will be allocated into the two intervention arms in a manner that ensures similar average performance levels between the two arms.

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Heat-suit training

Low-intensity endurance training with heat suit

Group Type EXPERIMENTAL

Heat-suit endurance training

Intervention Type BEHAVIORAL

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

Non-heat-suit training

Low-intensity endurance training without heat suit

Group Type OTHER

Non-heat-suit endurance training

Intervention Type BEHAVIORAL

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

Interventions

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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

Intervention Type 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

Intervention Type BEHAVIORAL

Other Intervention Names

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Heat training Control group

Eligibility Criteria

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Inclusion Criteria

* VO2max \> 65 ml/kg/min (male participants)
* VO2max \> 50 ml/kg/min (female participants)
* \>7 hours of endurance training per week for the 6 months leading up to the study

Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes