1 INTRODUCTION Physical exercise is one of the beneficial factors in a healthy lifestyle. It is important in the prevention of cardiovascular diseases, obesity, depression, cancer, diabetes, hypertension, and osteoporosis, and has been reported to reduce the risk of early death and prolong life expectancy (Miller et al., 2016). Physical activity and exercise is often recommended to prevent chronic diseases, to treat diseases, to shorten the recovery process, and maintain a healthy status.