During prolonged endurance exercise, certain physiological variables deteriorate depending on the duration of the exercise. Physiological resilience has therefore been defined as the ability to resist these changes and appears to be an important performance factor in endurance sports. For example, most studies in this field have investigated changes in cycling power output associated with the first ventilatory threshold (VT1), a marker of an individual's endurance capacity, after prolonged endurance exercise. To date, only two studies have examined the effects of training on resilience. The first compared the effectiveness of two training programs, one with low-intensity sessions and the other with high-intensity sessions, with no difference between the conditions. The second study showed that incorporating strength training into a running training program was more effective at improving resilience than running alone. However, the influence of training session duration on resilience remains unknown. Only one observational study has shown that in a group of runners of similar ability, those who were used to doing long sessions had better resilience than those who only did short sessions.
Subjects who engage in rigorous cardiovascular activity (e.g., endurance sports, team sports, combat sports, etc.) for a maximum of two hours per week
Ability to understand, speak, read, and write French
Affiliated with or beneficiaries of a social security system
Having freely given their written consent after being informed of the purpose, procedure, and potential risks involved
Subjects with chronic joint conditions (e.g., recurrent sprains, patellar or ligament problems).
Subjects with one or more heart conditions, including ischemic, valvular, arrhythmic, hypertensive, congenital, or hypertrophic heart disease.
Participants under guardianship or conservatorship.
Subjects with chronic or central neurological conditions.
Parallel
Long sessions
Other interventionTraining frequency of 2 long sessions per week
Short sessions
Other interventionTraining frequency of 5 short sessions per week
Power (watt) output at ventilatory threshold 1 (VT1)
the power (Watt) output at the VT1 measured by the difference of the power output (% decrease after 4 hours of cycling) between measurements taken before and after a training program. The results will be compared between group benefiting from long sessions and group from short sessions
a) Degree of change in heart rate (beats per minute),
Degree of changes in heart rate (beats per minute) during a 4-hour endurance cycling session, as measured by a heart rate monitor. The results will be compared between group benefiting from long sessions and group from short sessions
Rate of change in oxygen consumption (in L of O₂/min)
the rate of change in oxygen consumption (in L O₂/min) during a prolonged 4-hour endurance cycling exercise, quantified by measuring gas exchange (calculated using the equations of Jeukendrup and Wallis). The results will be compared between group benefiting from long sessions and group from short sessions
b) The Power (watt) output at ventilatory threshold 2 (VT2)
the power (Watt) output at the VT2 measured by the difference of the power output (% decrease after 4 hours of cycling) between measurements taken before and after a training program. The results will be compared between group benefiting from long sessions and group from short sessions
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