Key result
Between 1990 and 2016, low physical activity-attributable stroke mortality declined significantly, with an overall annual net drift of -1.3% to -2.9% in China and -3.9% to -5.6% in Japan.
Why the study?
Stroke is a leading cause of death in China and Japan, and physical inactivity is considered an important risk factor, motivating an assessment of long-term trends in stroke mortality attributable to low physical activity.
Observational
Effect estimate: Net drift per year: -1.3% (Chinese men), -2.9% (Chinese women), -3.9% (Japanese men), -5.6% (Japanese women)
p-value: p=<0.01
Stroke mortality attributable to low physical activity has declined in both China and Japan from 1990 to 2016, though the physically active population remains small, highlighting the need for continued promotion of physical activity.
Supports physical activity promotion in East Asia; extends observational trends but leaves causality and optimal interventions open.
Stroke is the first and fourth leading cause of death in China and Japan, respectively. Physical inactivity was suggested to be one of the most important risk factors for stroke mortality. Therefore, this study aimed to assess long-term trends in stroke mortality attributable to low physical activity (LPA) in China and Japan during the period 1990-2016. Mortality data were obtained from the Global Burden of Disease Study 2016 (GBD 2016) and were analyzed with an age-period-cohort method. The age-standardized mortality rates (ASMRs) showed declining trends for LPA-attributable stroke mortality. The overall net drift per year was -1.3% for Chinese men, -2.9% for Chinese women, -3.9% for Japanese men, and -5.6% for Japanese women. In both countries, the local drift values were below zero in all age groups. The longitudinal age curves of LPA-attributable stroke mortality were higher in men than in women in all age groups. The period and cohort rate ratios showed similar downward patterns for both sexes, with a faster decline for women than for men. However, the physically active population is still small in both countries. Therefore, policymakers should further promote physical activity as one of the most recommended effective strategies in stroke prevention.
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Cao et al. (2020) conducted an observational in Stroke mortality attributable to low physical activity. Low physical activity vs. Adequate physical activity was evaluated on Net drift (annual percentage change) in age-standardized mortality rates for low physical activity-attributable stroke (Net drift per year: -1.3% (Chinese men), -2.9% (Chinese women), -3.9% (Japanese men), -5.6% (Japanese women), p=<0.01). Between 1990 and 2016, low physical activity-attributable stroke mortality declined significantly, with an overall annual net drift of -1.3% to -2.9% in China and -3.9% to -5.6% in Japan.
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