Associations of Objectively-Measured Sedentary Time and Patterns with Cognitive Function in Non-Demented Japanese Older Adults: A Cross-Sectional Study

Sanmei Chen, Tao Chen, Takanori Honda, Yu Nofuji, Hiro Kishimoto and Kenji Narazaki
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Sanmei Chen: Department of Global Health Nursing, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
Tao Chen: Sports and Health Research Center, Department of Physical Education, Tongji University, Shanghai 200092, China
Takanori Honda: Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
Yu Nofuji: Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
Hiro Kishimoto: Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
Kenji Narazaki: Center for Liberal Arts, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan

IJERPH, 2022, vol. 19, issue 4, 1-12

Abstract: This study aimed to investigate the cross-sectional associations of objectively-measured sedentary time and patterns with cognitive function in Japanese older adults. A total of 1681 non-demented community-dwelling older adults (aged 73 ± 6, 62.1% women) were included. Total sedentary time, prolonged sedentary time (accumulated in ≥30 min bouts) and mean sedentary bout length were assessed using a tri-axial accelerometer. Global and domain-specific cognitive functions were measured using the Montreal Cognitive Assessment. The average of total sedentary time and prolonged sedentary time were 462 ± 125 and 186 ± 111 min/day, respectively. Greater prolonged sedentary time, but not total sedentary time, was significantly associated with poorer performance in the orientation domain even after controlling for moderate-to-vigorous physical activity ( p for trend = 0.002). A significant inverse association was also observed between mean sedentary bout length and the orientation domain ( p for trend = 0.009). No significant associations were observed for global cognitive function or other cognitive domains. Sedentary time accumulated in prolonged bouts, but not total sedentary time, was inversely associated with orientation ability among older adults. Our results encourage further researches to confirm the role of prolonged sedentary time in changes to cognitive domains over time among older adults.

Keywords: patterns of sedentary time; accelerometer; cognitive function; Japanese; physical activity (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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