A systematic review of reliability and objective criterion-related validity of physical activity questionnaires

• Main Authors: Helmerhorst Hendrik JF (Author), Brage Søren (Author), Warren Janet (Author), Besson Herve (Author), Ekelund Ulf (Author)
• Format: Book
• Published: BMC, 2012-08-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

<p>Abstract</p> <p>Physical inactivity is one of the four leading risk factors for global mortality. Accurate measurement of physical activity (PA) and in particular by physical activity questionnaires (PAQs) remains a challenge. The aim of this paper is to provide an updated syste...