How do i measure physical activity in my patients? Questionnaires and objective methods

Barbara Ainsworth

    Research output: Contribution to journalReview articlepeer-review

    103 Scopus citations


    How do healthcare providers know if their patients are getting enough physical activity to promote good health and to reduce their risks of chronic diseases and injury? The first step is to identify the patient's current level of physical activity using questionnaires and/or motion sensors. Questionnaires assess activity levels by having patients answer a set of questions about the types and amounts of activity performed at some time in the past. Motion sensors assess physical activity by patients wearing a small monitoring device that records their body movement as it occurs. If a provider is interested in determining a patient's caloric energy expenditure, he/she can apply statistical regression models to the questionnaire and motion sensor data to estimate kilocalories. If more precise measures of energy expenditure are desired, a provider can use the isotopic doubly labelled water method to estimate kilo- calories; however, this method is costly and is impractical in non-research clinical settings.

    Original languageEnglish (US)
    Pages (from-to)6-9
    Number of pages4
    JournalBritish journal of sports medicine
    Issue number1
    StatePublished - Jan 2009

    ASJC Scopus subject areas

    • Physical Therapy, Sports Therapy and Rehabilitation
    • Orthopedics and Sports Medicine


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