Aerobic interval will consist of a supervised aerobic interval training sessions 3 times/week. Duration will range between 45-50 min/session depending on the exercise energy expenditure (target expenditure ~450-500kcal/session). Each interval will have a total duration of 5 min, and it will be divided into 2 periods. The first period will consist of 3 minutes of high-intensity activity at 70-85% of predicted HRmax, and for the second period the intensity will be reduced to 60-65% of predicted HRmax for 2 minutes. The training sessions will be carried out outdoors at the trails located on campus. The activity will consist of walking and/or light jogging. The speed/incline will be changed depending on the participants' heart rate and perception using the Borg's rating of perceived exertion (RPE) as needed. The RPE for the first period range will be 13-17 (15-17 at the end of the period) and 10-12 for the second period.

Participants in the control group will not participate in the training programs.

The aerobic interval training group

CAT will be measured using cardiac Magnetic Resonance

Cardiac Function will be measured using cardiac Magnetic Resonance

Body composition will be measured using dual-energy x-ray absorptiometry

Cardiorespiratory Function will be measured on a treadmill with a metabolic cart