Effectiveness of and Engagement in a Mobile Exergame With Tailored Feedback

A Clustered Randomized Controlled Trial to Compare the Effectiveness of and Engagement in a Mobile Exergame 'SmartLife' With Tailored Feedback

The aim of this study is to investigate the effectiveness of the 'SmartLife' intervention on reducing sedentary behavior and increasing physical activity among adolescents and to investigate the engagement in the exergame. This will be compared in three groups: an intervention group that will receive a tailored exergame; an active control condition that will receive a non-tailored exergame; and a passive control condition that receives no intervention.

The aim of this study is to investigate the effectiveness of the 'SmartLife' intervention with tailored feedback on sedentary behavior and physical activity among adolescents and to investigate the engagement in the exergame. One intervention group will receive a version of the exergame that tailors feedback. This means tailored feedback will be based on data from a sensor which is integrated in a T-shirt and paired to the game. The active control group will receive a different version of the game, that does not provide tailored feedback.

Both groups will be compared to investigate their level of engagement in the game. A passive control group will be included that will be asked to continue their daily routines as usual. All three groups will be compared to determine the effectiveness of the 'SmartLife' intervention on physical activity and sedentary behavior.

Inclusion Criteria:

• Between 12-18 years old
• Access to an Android smartphone (4.0.1) during study period
• No physical disabilities that hinder physical activity

Exclusion Criteria:

• Not Dutch-speaking
• Does not have access to an Android smartphone (4.0.1)