Study of Factors Affecting the Step Count and Physical Activity Related Energy Expenditure of Healthy Elderly: Is It Possible to Assess Physical Activity by Only The Step Count?

Purpose: To examine whether the physical activity of healthy elderly people can be evaluated using step counts. Subjects and Methods: The subjects were 102 healthy elderly persons. Daily physical activity (step counts and physical activity-related energy expenditure "PAEE") were assessed u...

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Bibliographic Details
Published in:Rigaku ryoho kagaku 2014-01, Vol.30 (4), p.513-518
Main Authors: Suyama, Kazuaki, Asai, Masaharu, Tanaka, Takako, Tanaka, Kenichirou, Miyamoto, Naomi, Tabusadani, Mitsuru, Senjyu, Hideaki
Format: Article
Language:English
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Summary:Purpose: To examine whether the physical activity of healthy elderly people can be evaluated using step counts. Subjects and Methods: The subjects were 102 healthy elderly persons. Daily physical activity (step counts and physical activity-related energy expenditure "PAEE") were assessed using a uniaxial accelerometer. We also evaluated factors associated with physical activity, such as body mass index, quadriceps force hand-grip force respiratory function, depressive symptoms, regional environment, and wearing rate. Results: A high correlation was observed between the step count and PAEE. Furthermore, age, hand-grip force quadriceps force and wearing rate affected the number of steps and PAEE, according to multiple regression analysis. Conclusion: Our results suggest that a step count is sufficient to evaluate the PAEE of healthy elderly people.
ISSN:1341-1667