Power-speed-endurance Profile (Cycling/Rowing) : Optimize Performance of the French Athletes at the Paris Olympics 2024

Centre Hospitalier Universitaire de Saint Etienne19 enrolled

Overview

As part of the preparation at the Paris 2024 Olympic Games, the French rowing and cycling federations and a consortium of researchers met to reach an ultimate goal: to increase the number of medals in these two disciplines for Paris 2024 Olympics.

The objective of this study is to evaluate the maximum capacity of power production of athletes by describing their power-endurance profile and the physiological factors underlying this maximum power generation capacity. These assessments will guide coaches and athletes for: 1. the best use of athletes' physical abilities (for race strategy, cycling gear ratio or rowing levers) 2. adaptation of training program to improve the maximum capacity of power production of the athletes, in order to increase the number of medals at the Paris Olympics 2024.

Study Type

INTERVENTIONAL

Allocation

Purpose

OTHER

Masking

NONE

Enrollment

Conditions

Healthy Volunteers Performance

Interventions

HypoxiaOTHER

Subjects will be subjected to mild hypoxia simulating an altitude of 1750 m (normobaric hypoxia). Hypoxia decreases oxygen supply to tissue and limit exercise capacity. For this, the subjects will inhale a gas mixture depleted in oxygen (enriched in nitrogen). The barometric pressure at 1500 m being 621 mmHg, PIO2 at this altitude (PIO2 = (621 - 47) x 21%) is 120.5 mmHg. For sea level altitude where the barometric pressure is 760 mmHg, the hypoxic gas mixture should contain (x = 120.5 / (760 - 47)) 16.8% O2. Thus, by inhaling a gas mixture that is oxygen-depleted from 21 to 16.8%, subjects (will simulate the altitude of 1750 and) will experience the equivalent of a 20% reduction in oxygen supply.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * experienced, well-trained (national to international level) rowers and cyclists * written consent Exclusion Criteria: * taking medications interfering with measured parameters * contraindication to competitive sport practice * currently participating in an other structured exercise program * muscular, bone or joint injuries * neurologic disease * pregnant

Locations (3)

CEPART

Le Bourget-du-Lac, France

Chu Nantes

Nantes, France

Chu Saint-Etienne

Saint-Etienne, France

Outcomes

Primary Outcomes

Maximum force produced at zero speed in a fatigue-free condition

F0i measurement

Time frame: Month : 3

Speed in a fatigue-free condition

V0i measurement

Time frame: Month : 3

Maximum force produced at zero speed at the end of the 3 min.

F0e measurement

Time frame: Month : 3

Speed up produced at the end of the 3 min.

V0e measurement

Time frame: Month : 3

Secondary Outcomes

Maximal oxygen uptake (VO2max)

Cardiac stress test

Time frame: At inclusion

Maximal Ventilation (VEmax)

Cardiac stress test

Time frame: At inclusion

Cardiac output (QCmax)

Cardiac stress test

Time frame: At inclusion

Maximal cardiac frequency (fcmax)

Cardiac stress test

Time frame: At inclusion

Fibre type determination

Muscle biopsy of the vastus lateralis

Time frame: Month : 2

Microvasculature analysis

Data from ClinicalTrials.gov

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