Rift Racers - Effect of Balancing and Competition on Exertion, Enjoyment, and Motivation in an Immersive Exergame. - Burkhard C. Wünsche; Michael Abernethy; Sylwia Julia Hyniewska; Zhang Luo; Roshan Prakash Pawar; Sheng Cao; Christopher Brock; Alex Shaw 001; Christof Lutteroth (IVCNZ, 2021)