With virtual pal, women double workouts

The new study from the Michigan State University department of kinesiology tests the benefits of a virtual exercise partner and shows the presence of a moderately more capable cycling partner can significantly boost the motivation—by as much as 100 percent—to stick to an exercise program. The results can be used to help people meet physical activity recommendations, say the researchers. The work by Brandon Irwin and colleagues is published online in the journal Annals of Behavioral Medicine. “Being able to more than double one’s performance is a substantial gain for those trying to increase their physical activity,” Irwin says. “These results are encouraging and suggest the gains we observed over six hour-long sessions could be sustained on a longer-term program of exercise.” For many people, lack of motivation is a barrier to achieving both the recommended amount and intensity of exercise. Using the principles of group exercise, which is known to increase people’s motivation to stick to an exercise program, the researchers investigated whether a “virtually present” partner would influence participants’ motivation to exercise longer. A total of 58 women recruited from Michigan State physical activity courses took part in the experiment and exercised on a stationary bike. They were split into three groups: The first group exercised on their own alongside a virtual person, the second group exercised alongside a virtual person but also worked as a team, and the third group cycled alone. At the start, the women in groups one and two were assigned a “virtually present partner” for the ride and were told their partner would be riding at the same time they were, on a similar bike in another lab. The women “met” their partners via a pre-recorded video-chat and were told their partner’s performance was moderately better than their own. During the exercise sessions, participants tracked their partner’s progress by watching what looked like a live feed but was in fact a recording. All students rode a video-game exercise bike for as long as they felt comfortable. They then were asked to rate their intention to exercise again, how well they felt they had done, and how tired they felt. Overall, exercising with a virtually present partner improved performance on the cycling task, and the women cycled longer when working alongside a more capable partner than when exercising alone. Across sessions, those women who exercised as part of a team cycled, on average, two minutes longer than those who exercised independently with a partner—22 versus 20 minutes—and twice as long as those who exercised without a partner—22 versus 11 minutes. In terms of motivation, there was a marked decline in intent to exercise among those who cycled on their own. In contrast, those who cycled with a virtual partner reported no decline in motivation to exercise.