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Article

Is Less Sedentary Behavior, More Physical Activity, or Higher Fitness Associated with Sleep Quality? A Cross-Sectional Study in Singapore

1
Department of Social and Behavioral Medicine, Kagoshima University Graduate Medical School, Kagoshima 890-8520, Japan
2
Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA 23284, USA
3
Faculty of Sport Sciences, Waseda University, Saitama 359-1192, Japan
4
Exercise Science Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
5
Lien Centre for Palliative Care, Duke-NUS Medical School, Singapore 169857, Singapore
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(4), 1337; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17041337
Received: 24 January 2020 / Revised: 17 February 2020 / Accepted: 18 February 2020 / Published: 19 February 2020
Objectives: To examine the independent, joint, and fully combined associations of sedentary behavior (SB), moderate-to-vigorous physical activity (MVPA), and cardiorespiratory fitness (CRF) with the odds of poor sleep quality (SQ). Methods: We performed a secondary data analysis on 757 working adults (male = 345) in Singapore, with an average age of 35.2 years. The Pittsburgh Sleep Quality Index was used to assess SQ. Objectively measured MVPA and SB were each obtained using an accelerometer. A non-exercise prediction equation was used to estimate CRF. Logistic regression models were used to determine associations. Results: In total, 13.2% of the sample (n = 100) was identified as having poor SQ. After adjusting for study covariates, independent analyses revealed a clear inverse association for higher CRF and lower odds of poor SQ (OR = 0.50; 95% CI = 0.28–0.91). SB and MVPA demonstrated no independent associations. Joint associations revealed that odds of having poor SQ for those with low CRF was higher regardless of SB level and was further deteriorated by lower MVPA in the fully combined model. The fully combined model also demonstrated that those with lower SB, higher MVPA, and higher CRF had the lowest odds of having poor SQ (OR = 0.28; 95% CI = 0.10–0.78). Conclusions: Physical activity/exercise training programs that aim to improve CRF may be useful in lowering the odds or poor SQ in working adults. View Full-Text
Keywords: cardiorespiratory fitness; sedentary; physical activity; sleep quality; combined association cardiorespiratory fitness; sedentary; physical activity; sleep quality; combined association
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    Doi: 10.5281/zenodo.3626420
    Description: Descriptive Statistics of Key Outcome Variables and Correlations Between SB, MVPA and CRF
MDPI and ACS Style

Sloan, R.A.; Kim, Y.; Sawada, S.S.; Asakawa, A.; Blair, S.N.; Finkelstein, E.A. Is Less Sedentary Behavior, More Physical Activity, or Higher Fitness Associated with Sleep Quality? A Cross-Sectional Study in Singapore. Int. J. Environ. Res. Public Health 2020, 17, 1337. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17041337

AMA Style

Sloan RA, Kim Y, Sawada SS, Asakawa A, Blair SN, Finkelstein EA. Is Less Sedentary Behavior, More Physical Activity, or Higher Fitness Associated with Sleep Quality? A Cross-Sectional Study in Singapore. International Journal of Environmental Research and Public Health. 2020; 17(4):1337. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17041337

Chicago/Turabian Style

Sloan, Robert A., Youngdeok Kim, Susumu S. Sawada, Akihiro Asakawa, Steven N. Blair, and Eric A. Finkelstein 2020. "Is Less Sedentary Behavior, More Physical Activity, or Higher Fitness Associated with Sleep Quality? A Cross-Sectional Study in Singapore" International Journal of Environmental Research and Public Health 17, no. 4: 1337. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17041337

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