Abstract
Introduction: Given the health benefits of physical activity (PA) for older adults and the ageing of the population, it is important to include older adults in PA surveillance. However, little is known about how older adults cope with PA recall and formulation of responses to questions about a behaviour as complex as PA. Our aim was to examine older adults’ understanding and interpretation of a PA questionnaire used for surveillance in Australia, the Active Australia Survey (AAS). AAS asks about frequency of sessions of walking, moderate-intensity PA (MPA) and vigorous-intensity PA (VPA) over the previous 7 days and the total duration of these activities for that time period.
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