Measures of Physical Activity Using Cell Phones: Validation Using Criterion Methods

• Main Authors: Bexelius, Christin (Author), Löf, Marie (Author), Sandin, Sven (Author), Trolle Lagerros, Ylva (Author), Forsum, Elisabet (Author), Litton, Jan-Eric (Author)
• Format: Book
• Published: JMIR Publications, 2010-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Background Physical activity is associated with reduced risks of many chronic diseases. Data collected on physical activity in large epidemiological studies is often based on paper questionnaires. The validity of these questionnaires is debated, and more effective methods are needed. Objective This...