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

NCT04611646 | Completed

• 1 other identifier: Trainome 2020#025
• Study Type: interventional
• Target: 53
• Locations: 1 country
• Sites: 1

Brief 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

Conditions

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

Keywords

Cycling; Heat; Hemoglobin mass; Skeletal muscle; Elite cyclists; Endurance performance; Mitochondria

Outcome Measures

Primary Outcomes (1)

• Hemoglobin mass

  Hemoglobin mass measured using CO rebreathing (g)

  Changes from before the intervention (T0) to immediately after the intervention (T1)

Secondary Outcomes (23)

• Maximal oxygen consumption

  Changes from before the intervention (T0) to immediately after the intervention (T1)

• Maximal aerobic power output

  Changes from before the intervention (T0) to immediately after the intervention (T1)

• Power output at lactate threshold

  Changes from before the intervention (T0) to immediately after the intervention (T1)

• Gross efficiency

  Changes from before the intervention (T0) to immediately after the intervention (T1)

• Fractional utilization of VO2max (incremental test)

  Changes from before the intervention (T0) to immediately after the intervention (T1)

Other Outcomes (2)

• Training volume

  Throughout study completion (daily), an average of five weeks

• Iron intake

  Throughout study completion (daily), an average of five weeks

Study Arms (2)

Heat-suit training

EXPERIMENTAL

Low-intensity endurance training with heat suit

Behavioral: Heat-suit endurance training

Non-heat-suit training

OTHER

Low-intensity endurance training without heat suit

Behavioral: Non-heat-suit endurance training

Interventions

Heat-suit endurance training 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

Also known as: Heat training

Heat-suit training

Non-heat-suit endurance training 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

Also known as: Control group

Non-heat-suit training

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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

Sponsors & Collaborators

• Inland Norway University of Applied Sciences: lead

Study Sites (1)

Inland Norway University of Applied Sciences

Lillehammer, Inland Norway, 2613, Norway

Location

MeSH Terms

Interventions

Control Groups

Intervention Hierarchy (Ancestors)

Epidemiologic Research Design; Epidemiologic Methods; Investigative Techniques; Research Design; Methods

Study Officials

• Anne S Lofthus

  Research Administrator

  STUDY CHAIR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: 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.

Study Record Dates

• First Submitted: October 20, 2020
• First Posted: November 2, 2020
• Study Start: October 19, 2020
• Primary Completion: December 13, 2020
• Study Completion: December 13, 2020
• Last Updated: March 1, 2021

Record last verified: 2020-11

Locations

NO (1)