Different Exercising Intensities and Frequencies of Exercise on Depressive Mood and Insomnia

Subjects in attention control group will receive one session of 75 minutes of stretching exercise weekly. All walking exercise session will be performed on motor-driven treadmill. Subjects in moderate-intensity walking groups will walk at an intensity of 3.25 metabolic equivalents (METs). Subjects in vigorous-intensity walking groups will brisk walk at an intensity of 6.5 metabolic equivalents (METs). Warm-up and cool-down will be provided before and after the training. Participants who failed to achieve 80% attendance will be excluded from the study. All exercise sessions were supervised by qualified athletic coach.