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Accelerometer-Measured Sedentary and Physical Activity Time and Their Correlates in European Older Adults: The SITLESS Study.


ABSTRACT: BACKGROUND:Sedentary behavior (SB) and physical activity (PA) are important determinants of health in older adults. This study aimed to describe the composition of accelerometer-measured SB and PA in older adults, to explore self-reported context-specific SB, and to assess sociodemographic and functional correlates of engaging in higher levels of SB in participants of a multicenter study including four European countries. METHOD:One thousand three hundred and sixty community-dwelling older adults from the SITLESS study (61.8% women; 75.3?±?6.3 years) completed a self-reported SB questionnaire and wore an ActiGraph accelerometer for 7 days. Accelerometer-determined compositional descriptive statistics were calculated. A fixed-effects regression analysis was conducted to assess the sociodemographic (country, age, sex, civil status, education, and medications) and functional (body mass index and gait speed) correlates. RESULTS:Older adults spent 78.8% of waking time in SB, 18.6% in light-intensity PA, and 2.6% in moderate-to-vigorous PA. Accelerometry showed that women engaged in more light-intensity PA and walking and men engaged in higher amounts of moderate-to-vigorous PA. Watching television and reading accounted for 47.2% of waking time. Older age, being a man, single, taking more medications, being obese and overweight, and having a slower gait speed were statistically significant correlates of more sedentary time. CONCLUSIONS:The high amount of SB of our participants justifies the need to develop and evaluate interventions to reduce sitting time. A clinically relevant change in gait speed can decrease almost 0.45 percentage points of sedentary time. The distribution of context-specific sedentary activities by country and sex showed minor differences, albeit worth noting.

SUBMITTER: Gine-Garriga M 

PROVIDER: S-EPMC7494025 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Accelerometer-Measured Sedentary and Physical Activity Time and Their Correlates in European Older Adults: The SITLESS Study.

Giné-Garriga Maria M   Sansano-Nadal Oriol O   Tully Mark A MA   Caserotti Paolo P   Coll-Planas Laura L   Rothenbacher Dietrich D   Dallmeier Dhayana D   Denkinger Michael M   Wilson Jason J JJ   Martin-Borràs Carme C   Skjødt Mathias M   Ferri Kelly K   Farche Ana Claudia AC   McIntosh Emma E   Blackburn Nicole E NE   Salvà Antoni A   Roqué-I-Figuls Marta M  

The journals of gerontology. Series A, Biological sciences and medical sciences 20200901 9


<h4>Background</h4>Sedentary behavior (SB) and physical activity (PA) are important determinants of health in older adults. This study aimed to describe the composition of accelerometer-measured SB and PA in older adults, to explore self-reported context-specific SB, and to assess sociodemographic and functional correlates of engaging in higher levels of SB in participants of a multicenter study including four European countries.<h4>Method</h4>One thousand three hundred and sixty community-dwell  ...[more]

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