IRCT2017020124401N3 IRCT 2017-05-26 Vice chancellor for research, Tehran University of Medical Sciences The impact of two modes of exercise on energy expenditure of over-weight sedentary women The impact of a single bout of high intensity interval training versus moderate continuous exercise on excess post-exercise oxygen consumption in over-weight sedentary women 2017-04-01 anticipated 15 Complete https://irct.ir/trial/20617 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Crossover, Purpose: Health service research. N/A Over-weight sedentary women. Intervention 1: Continuous moderate intensity exercise (50% HRR or 55% VO2max) which will be prescribed for 30 minutes. Intervention 2: One week later, high intensity interval exercise with the exercise to rest ratio of 2 to 1 (4 min high intensity with 80% of HRR or 82% of the VO2max and 2 min low intensity with 40% of HRR or 45% of the VO2max). Continuous moderate intensity exercise will be prescribed for 30 minutes and the duration of high intensity interval exercise will be adjusted on the basis of the measurement of oxygen consumption to have two isocaloric exercise sessions.