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What factors are associated with physical activity in older people, assessed objectively by accelerometry?
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    An earlier community study

    Dear Editor

    We have read with interest the recently reported accelerometer study of physical activity in community-living seniors in Oxfordshire (1). Subjects were observed for 7 days, apparently in the winter or the spring, although the only clue to the important question of season is that invitations were sent out over a 20-week period, beginning in September of 2006. In discussing their data, the authors claim (p...

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