Sedentary behavior has been identified as one of the major causes of many chronic diseases,such as cardiovascular diseases,stroke,cancer,osteoporosis,and type 2 diabetes.1 Modern technology plays a complex role in sedentary behavior—much like a double-edged sword.Specifically,some modern technologies,such as sedentary video games and computer games,have contributed to the epidemic of sedentary behavior and physical inactivity,whereas other novel technologies such as e-health have been increasingly used to promote physical activity(PA)and health.2,3 Indeed,e-health encompasses more than just Internet and medicine.It can include many sophisticated applications that deal with disease prevention and wellness,mobile decision making,emergency interventions,monitoring health,and remote care via mobile devices.
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