Exergames have been suggested as a possible alternative to traditional exercise in the general population. The
purpose of this study was to examine the heart rate (HR) and energy expenditure (EE) of young adults playing several
different exergames, while self-selecting the component of the game to play and the intensity. A total of 117 participants,
18-35 years of age, were evaluated on one of four active video games. Participants were free to choose any component of
the given game to play and they played at a self-selected intensity. The average HR and EE during the individual games
were compared to resting conditions and to the American College of Sports Medicine (ACSM) guidelines. The HR and
EE increased above resting conditions during each game (p<0.05). When the results of all games were combined, the HR
was 125.4 ± 20.0 bpm and the average EE was 6.7 ± 2.1 kcal/min. This HR represents an average percent of heart rate
reserve of 44.6 ± 14.1, high enough to be considered moderate intensity exercise. If performed for 30 minutes a day, five
days per week, the average EE would be 1,005 kcals, enough to meet the ACSM recommendations for weekly EE.
Therefore, at least some exergames could be a component of an exercise program.