HIIT The Road: Using Virtual Spectator Feedback in HIIT-based Exergaming

Exergames are an attractive way to promote physical activity in users, but rarely implement high intensity protocols. A popular example of high-intensity training is HIIT (high intensity interval training), which involves alternating periods of intense exercise with periods of light exercise. Few example of games implementing HIIT are available and their effectiveness is uncertain. In this paper we propose a method for improving user performance while maintaining intrinsic motivation without using a human instructor. Our VR exergaming solution uses virtual spectators, which produce a rhythmic clapping similar to that observed in sporting events. Our user study indicates that the virtual crowd feedback increases cycling speed and participants' heart rate.