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Published in: European Review of Aging and Physical Activity 1/2020

Open Access 01-12-2020 | Research article

Device-measured sedentary behavior and physical activity in older adults differ by demographic and health-related factors

Authors: Ing-Mari Dohrn, Paul A. Gardiner, Elisabeth Winkler, Anna-Karin Welmer

Published in: European Review of Aging and Physical Activity | Issue 1/2020

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Abstract

Background

Our aim was to describe and explore older adults’ device-measured sedentary behavior and physical activity (PA) pattern by sex, age, education, marital status, body mass index, and physical function; and to assess agreement regarding fulfillment of PA recommendations, i.e. 150 min/week of moderate-to-vigorous intensity PA (MVPA), between device-measured and self-reported PA.

Method

We included 656 older adults (64% women), aged 66, 81–87 or ≥ 90 years from a Swedish population-based cohort study. The activPAL3 accelerometer provided information on sedentary behavior (sedentary time, sedentary bouts, sit-to-stand transitions) and PA. Stepping ≥100 steps/min was considered MVPA; standing and stepping < 100 steps/min were considered light-intensity PA (LPA). Self-reported PA was compared with min/week in MVPA and steps/day.

Results

On average, 60% of wear time was spent sedentary, 36% in LPA, and 4% in MVPA. Relative to men, women, had significantly (p < 0.05) more sit-to-stand transitions, spent 33 min/day less sedentary and 27 min/day more in LPA, and were more likely to report meeting PA recommendations, but showed no difference in steps/day, MVPA, or sedentary bout duration. Older age was associated with more sedentary time, lower MVPA and fewer steps/day. The prevalence of meeting PA recommendations was 59% device-measured and 88% by self-report with limited agreement between methods (Cohen’s Kappa = 0.21, Spearman’s rho = 0.28). Age differences were much more pronounced with objective measures than by self-report.

Conclusions

We found significant sex differences in sedentary behavior and time in LPA in older adults, but not in MVPA, in contrast to previous findings. Sedentary time increased with age, with small differences in accumulation pattern. MVPA time was lower with older age, obesity, and poor physical function. A majority of the participants > 80 years did not meet the PA recommendations. Given the strong relationships between sedentary behavior, PA and health in older adults, programs are needed to address these behaviors. Agreement between device-measured and self-reported fulfillment of PA recommendations was limited. Device-based measurement adds value to PA studies, providing richer and different data than self-report.
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Metadata
Title
Device-measured sedentary behavior and physical activity in older adults differ by demographic and health-related factors
Authors
Ing-Mari Dohrn
Paul A. Gardiner
Elisabeth Winkler
Anna-Karin Welmer
Publication date
01-12-2020
Publisher
BioMed Central
Published in
European Review of Aging and Physical Activity / Issue 1/2020
Print ISSN: 1813-7253
Electronic ISSN: 1861-6909
DOI
https://doi.org/10.1186/s11556-020-00241-x

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