Measuring Physical Activity in a Cardiac Rehabilitation Population Using a Smartphone-Based Questionnaire

• প্রধান লেখক: Pfaeffli, Leila (লেখক), Maddison, Ralph (লেখক), Jiang, Yannan (লেখক), Dalleck, Lance (লেখক), Löf, Marie (লেখক)
• বিন্যাস: গ্রন্থ
• প্রকাশিত: JMIR Publications, 2013-03-01T00:00:00Z.
• বিষয়গুলি: article
• অনলাইন ব্যবহার করুন: Connect to this object online.

BackgroundQuestionnaires are commonly used to assess physical activity in large population-based studies because of their low cost and convenience. Many self-report physical activity questionnaires have been shown to be valid and reliable measures, but they are subject to measurement errors and misr...