NCT05307276

Limitation of the Ventilatory Response to Exercise in the Master Athlete

Limitation of the Ventilatory Response to Exercise in the Master Athlete: Influences on Locomotor Muscle Fatigue and on Endurance Performance

• Status: Terminated
• Phase: N/A
• Study type: Interventional
• Enrollment: 3 (actual)
• Sponsor: Centre Hospitalier Universitaire de Nice · Academic / Other
• Sex: All
• Age: 60 Years
• Healthy volunteers: Accepted

Summary

It is generally accepted that the ventilatory system is not a limiting factor in physical exercise in terms of performance or exercise tolerance in healthy subjects. The ventilatory system would be oversized in relation to the stresses it has to cope with, even during maximum intensity exercise. However, some highly trained endurance athletes may be exceptions to this rule. A limitation of the expiratory flow is indeed sometimes found in these athletes, whose maximum values of ventilation can confront the mechanical limits of their ventilatory system. This phenomenon could be accentuated in elderly athletes (known as "master athletes") under the effect of structural and functional pulmonary alterations that accompany aging. Our hypothesis : What is the prevalence of exercise expiratory flow limitation in the master athlete and does it cause a decrease in physical performance via an acceleration of locomotor muscle fatigue?

Conditions

• Healthy Volunteers

Interventions

Type	Name	Description
OTHER	Heliox	Participants will then complete 1 FAM (#V3) to Neuromuscular Function Assessment (PRE-POST), Pre- and Post- Exercise Ventilatory Function Assessment, and a Constant Load Ergocycle Test to Tolerance Limit (intensity fixed at 90% of the maximum aerobic power, PMA). The following two experimental visits (#V4 and #V5) will replicate the tests described in #V3. However, during the constant load exercise, participants will breathe either ambient air or heliox (a mixture in which the nitrogen in the air is replaced by the inert gas helium) in a random order. During a final Experiential Visit (#V6), participants will replicate the "Medical Gas Administration" visit but the exercise will be interrupted when a similar amount of time/work as the ambient air condition is achieved.
OTHER	Air	Following the selection visit (#V0) to verify the inclusion and non-inclusion criteria, participants will make 2 visits (#V1 and #V2) including in particular a Respiratory Functional Exploration (EFR) and a triangular VO2 MAX estimation test in Ambient Air or Heliox conditions (depending on randomization).

Timeline

• Start date: 2022-04-01
• Primary completion: 2023-04-01
• Completion: 2023-07-01
• First posted: 2022-04-01
• Last updated: 2023-09-08

Locations

1 site across 1 country: France