PDAs beeped reminders to participants, and they worked out longer, study shows
“Specially programmed personal digital assistants (PDAs) can help encourage middle-aged and older Americans to increase their physical activity levels, a Stanford University study says. The 37 study participants were randomly assigned to receive either traditional physical activity information handouts or a PDA loaded with a program that asked questions designed to help users set physical activity goals, track their activity, and get feedback on how well they were meeting their goals. The device automatically beeped once in the morning and once in the evening to remind users to review the questions. If a person didn't respond to the initial beep, the device beeped three additional times at 30-minute intervals. After eight weeks, the people with the PDAs had exercised about five hours a week, compared to two hours a week for those with the traditional handouts.”
http://www.healthday.com/Article.asp?AID=612440
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