I did a lot of work studying ‘I Seek the Nerves’, and used this to suggest some ways of using exercise as part of an interactive system. We suggest that rather than seeing exercise purely as something to encourage people to do with computer systems, we see exercise as something interesting and rich in itself. In particular we argue that doing hard exercise can make people increasingly emotionally involved with the experience which they are taking part in.
Marshall, J., Benford, S., Using fast interaction to create intense experiences. Proceedings of CHI 2011, Vancouver, Canada (2011) PDF