Key summary points
To investigate the association between falls and accelerometer measured physical activity among older people living in cold, snowy regions in Japan.
AbstractSection FindingsA higher moderate-to-vigorous intensity physical activity levels and walking steps were associated with falls on a frozen road.
AbstractSection MessageThe risk of falls, especially on frozen roads, increased among active older people living in cold, snowy regions, and environmental factors should be considered when determining prevention strategies.
Abstract
Purpose
The aim of the present study was to investigate the association between falls, including falls on frozen roads, and physical activity among older people living in cold, snowy regions in Japan.
Methods
Participants were subjects of the Japan Gerontological Evaluation Study 2016 who had agreed to the Hokkaido additional visit survey in winter 2017/18 and lived in cold, snowy regions in Japan. The analysis included 461 participants (mean age 74.7 years; standard deviation 2.8 years; 46.5% male). Sociodemographic characteristics, physical activity (min/day of moderate-to-vigorous intensity physical activity [MVPA] and light intensity physical activity, and walking steps/day) measured by accelerometer, cognitive function, depression, visual impairment, and history of stroke were surveyed. Poisson regression analyses were performed to clarify the association between prevalence of falls and physical activity.
Results
Of those who reported a fall with location, 86 (69.9%) fell on frozen roads, 24 (19.5%) fell on unfrozen roads and 13 (10.6%) fell indoors. There were significant positive associations between MVPA (adjusted prevalence ratio [aPR] Tertile [T] 3 vs T1, 1.73; 95% confidence interval [CI], 1.04–2.87) and all falls. When limited to falls on frozen roads, higher MVPA levels and walking steps were associated with falls on frozen roads (MVPA, aPR T3 vs T1, 2.16; 95% CI, 1.19–3.94; walking steps, aPR T3 vs T1, 2.49; 95%CI 1.33–4.68).
Conclusion
The risk of falls, especially on frozen roads, increased among active older people living in cold, snowy regions, and environmental factors should be considered when determining prevention strategies.
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Acknowledgments
The authors express their sincere appreciation to the study participants. We wish to express our sincere thanks to Dr. Zentaro Yamagata, Department of Health Sciences, School of Medicine, University of Yamanashi, for statistical advice. We thank Helen Jeays, BDSc AE, from Edanz Group (https://en-author-services.edanzgroup.com/) for editing a draft of this manuscript.
Funding
This work was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology [JP17K19778, JP17H04129, JP18H05389 and JP20H00557].
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RK contributed to the study concept and design, analysis and interpretation of the data, and preparation of manuscript. HY, SA and SI contributed to the analysis and interpretation of the data, and critical review. KK, SU, AT, TK and AT contributed to study concept and design, acquisition of subjects and/or data, analysis and interpretation of data, and critical review.
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This study was approved by the Ethics Review Committee of the Hokkaido University Graduate School of Medicine and Chiba University. This study was performed in line with the principles of the Declaration of Helsinki.
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Kojima, R., Ukawa, S., Yokomichi, H. et al. Association between accelerometer-measured physical activity and falls among community-dwelling older people living in cold, snowy areas. Eur Geriatr Med 12, 91–98 (2021). https://doi.org/10.1007/s41999-020-00398-9
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DOI: https://doi.org/10.1007/s41999-020-00398-9