Association between Objectively Measured Sedentary Behaviour and Sleep Quality in Japanese Adults: A Population-Based Cross-Sectional Study

Keita Kinoshita, Naoki Ozato, Tohru Yamaguchi, Motoki Sudo, Yukari Yamashiro, Kenta Mori, Yoshihisa Katsuragi, Takuji Yasukawa, Koichi Murashita, Shigeyuki Nakaji and Kazushige Ihara
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Keita Kinoshita: Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Naoki Ozato: Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Tohru Yamaguchi: Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan
Motoki Sudo: Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan
Yukari Yamashiro: Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan
Kenta Mori: Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Yoshihisa Katsuragi: Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Takuji Yasukawa: Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Koichi Murashita: COI Research Initiatives Organization, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Shigeyuki Nakaji: Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan
Kazushige Ihara: Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan

IJERPH, 2022, vol. 19, issue 5, 1-10

Abstract: The association between sedentary behaviour and sleep quality (SQ) remains unclear, partly due to the limited methodology for assessing sedentary time and the influence of obesity. This study aimed to examine the association between objectively measured sedentary time and poor SQ, as well as the association of visceral fat accumulation. This cross-sectional study used health check-up data obtained from 721 Japanese adults. Sedentary time and physical activity were measured using an accelerometer for ≥7 days, with ≥10 measurement hours per day. Poor SQ was determined by a Pittsburgh Sleep Quality Index score of ≥ 6. Visceral fat was measured using the abdominal bioimpedance method. A logistic regression model was used to analyse the association between sedentary time and SQ. We found that higher sedentary time was associated with poorer SQ. This association remained significant after adjustment for several covariates, including visceral fat. Compared with the lowest tertile of sedentary time, the second and highest tertile had a significantly higher OR of poor SQ (Tertile 2: OR = 2.06 [95% CI 1.14,3,73]; Tertile 3: OR = 2.76 [95% CI 1.49, 5.11]). These results suggest that managing sedentary time itself might contribute to improving SQ.

Keywords: physical activity; sedentary behaviour; sleep quality; intra-abdominal fat (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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