Older Adults' Daily Step Counts and Time in Sedentary Behavior and Different Intensities of Physical Activity.

Journal of Epidemiology
Shiho AmagasaShigeru Inoue

Abstract

Daily step count is the simplest measure of physical activity. However, little is known about how daily step count related to time spent in different intensities of physical activity (PA) and sedentary behavior (SB). These cross-sectional data were derived from 450 older Japanese adults (56.7% men; mean age, 74.3 years) who were randomly selected from three communities and responded a survey. Daily step count and time spent in moderate-to-vigorous PA (MVPA), light-intensity PA (LPA), and SB were measured using a validated wearable technology (HJA-350IT). Associations of daily step count with time spent in measured behaviors were examined using linear regression models with isometric log-ratio transformations of time-use composition, adjusting for gender, age, and residential area. Participants averaged 5,412 (standard deviation, 2,878) steps/d and accumulated MVPA, LPA, and SB corresponding to 4.0%, 34.8%, and 61.2% of daily waking time, respectively. Daily step count significantly increased with increase in time spent in MVPA relative to other behaviors (ie, LPA and SB) and in the ratio of LPA to SB after allowing for MVPA. After stratification, daily step count was significantly related to the ratio of LPA to SB in those taki...Continue Reading

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Citations

Dec 7, 2020·Scandinavian Journal of Medicine & Science in Sports·Sergio Núñez de Arenas-ArroyoVicente Martínez-Vizcaíno
Jan 19, 2021·Journal of Parkinson's Disease·Cristina Colón-SemenzaTerry Ellis
Sep 25, 2021·The International Journal of Behavioral Nutrition and Physical Activity·Catrine Tudor-LockeJohn Staudenmayer

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