Is a new tool for fitness research already in your own pocket?
Real-word tracking of activity levels using a smartphone app may one day help guide people to patterns of activity that provide the most cardiovascular benefit. Challenges to this type of research include engaging a diverse range of participants and motivating them to keep using the app. Possible solutions include using a wristband fitness tracker or smartwatch in addition to a smartphone, and adding “gamification” features to the app that give feedback and rewards for greater activity and participation.
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