Impact of a Physical Activity Program on the Mental Health of Medical Students.

The students level of overall mental health will be assessed through the DASS-21 questionnaire. A total score can also be assessed ranging from 0 (normal) to 63 (extremely severe). A score for the three subscales (depression, anxiety, stress) can also be assessed, each score ranging from 0 (normal) to 21 (extremely severe).

The measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students level of physical activity and sedentary will be assessed through the Onaps-PAQ (National Observatory for Physical Activity and Sedentariness - Physical Activity Questionnaires) during a typical week. Scores are expressed in hours per day for week and weekend days. This measure will be done during the 3 complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students level of well-being will be assessed through the WHO-5 WELL-BEING index. The total score is ranging from zero (worst possible mental well-being) to 100 (best possible mental well-being).

This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The student's level of stress will be assessed through the PSS questionnaire ranging from 0 (none) to 40 (extreme).This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students level of loneliness will be assessed through the UCLA Loneliness Scale ranging from 20 (low) to 80 (extreme). This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students level of sleep disturbance will be assessed through the Pittsburgh Sleep Quality Index (PSQI) ranging from 0 (none) to 21 (extreme). This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The student's level of fatigue will be assessed through the MFI questionnaire that covers various dimensions of fatigue, including general fatigue (9 to 45), mental fatigue (6 to 30), reduced motivation (2 to 10), and reduced activity (3 to 15). The higher the score, the greater the fatigue. This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

Participants' habits and beliefs about physical activity will be assessed through this 9-item questionnaire, with responses ranging from 1 (strongly agree) to 5 (strongly disagree). This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students basal level of physical fitness will be assessed through a muscular strength test. This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students basal level of physical fitness will be assessed through a power test, a vertical jump. The squat jump is plyometric exercise in which a person bends their knees to lower their body into a squat position, then performs an explosive jump upwards by extending the hips, knees, and ankles simultaneously. During this exercise, the height of jump will be measured.This measure will be done during the 3 complete complete assessment periods : pre-intervention (week 1-2) ; mid-intervention (week 8-9) ; post-intervention (week 15 - 16).

The students level of physical fitness will be assessed through a power test, a vertical jump. The squat jump is plyometric exercise in which a person bends their knees to lower their body into a squat position, then performs an explosive jump upwards by extending the hips, knees, and ankles simultaneously. During this exercise, the height of jump will be measured.

The students level of physical fitness will be assessed through cardiorespiratory endurance test (modified VAMEVAL). During this test, the velocity at maximal aerobic (VMA) is the maximum speed (velocity) reached where the individual can still maintain aerobic metabolism without transitioning into anaerobic metabolism. VO2max refers to the maximum rate of oxygen consumption during intense exercise, typically measured in milliliters of oxygen per kilogram of body weight per minute (ml/kg/min). It is a key indicator of an individual's cardiovascular fitness and aerobic endurance.

The students level of physical fitness will be assessed through a cardiorespiratory endurance test (modified VAMEVAL). The heart rate will be measured at three moments: maximum, submaximal, at 1 minute, and 3 minutes of recovery.

The students level of flexibility of lower body will be assessed through the sit and reach test.

The students level of flexibility will be assessed through a upper body test.

The perceived level of the satisfaction ("Are you satisfied with the intervention ?") will be accessed on a likert scale ranging from 1 (not at all satisfied) to 4 (very satisfied). The measure will be done during the post-intervention (week 15 - 16).