Abstract
BackgroundPhysical inactivity remains an under-researched field in terms of studying burden of disease at provincial level, and no studies have examined the effects of inactivity on life expectancy (LE) in China. The purpose of this study was to estimate mortality risk and LE effects associated with insufficient levels of physical activity in Jiangxi province.Methods/FindingsPrevalence of risk factors and mortality counts were extracted from Chronic Diseases and Risk Factors Surveillance Survey (CDRFSS) and Disease Surveillance Points system (DSP), respectively. Insufficient physical activity (IPA) was defined as less than 150 minutes of moderate-intensity physical activity or 60 minutes of vigorous-intensity physical activity per week, accumulated across work, home, transport and discretionary domains. Population-attributable fractions (PAF) were used to calculate the mortality attributable to risk factors, and life table methods were used to estimate the LE gains and LE shifts. Monte Carlo simulation techniques were used for uncertainty analysis. Overall, 5 885 (95% uncertainly interval (UI), 5 047–6 506) and 8 578 (95% UI, 8 227–9 789) deaths in Jiangxi province were attributable to IPA in 2007 and 2010, respectively. The LE gains for elimination of attributable deaths were 0.68 (95% UI, 0.61–076) in 2007, and increased to 0.91 (95% UI, 0.81–1.10) in 2010. If the prevalence of IPA in 2010 had been decreased by 50% or 30%, 3 678 (95% UI, 3 220–4 229) or 2 090 (95% UI, 1 771–2 533) deaths would be avoided, and 0.40 (95% UI, 0.34–0.53) or 0.23 (95% UI, 0.16–0.31) years of LE gained, respectively.ConclusionsAdults in Jiangxi province of China have a high and increasing prevalence of IPA. Due to the deaths and potential LE gains associated with IPA, there is an urgent need to promote physical activity, one of the most modifiable risk factors, within China's health care reform agenda.
Highlights
Physical inactivity has been associated with higher risk of many chronic diseases, including coronary heart disease [1,2], ischemic stroke [3,4], type 2 diabetes [5,6], colon cancer [7] and breast cancer [8]
Due to the deaths and potential life expectancy (LE) gains associated with insufficient physical activity (IPA), there is an urgent need to promote physical activity, one of the most modifiable risk factors, within China’s health care reform agenda
Selfreported data on the prevalence of IPA among Jiangxi province adults 18 years of age or older were retrieved from Chinese Chronic Diseases and Risk Factors Surveillance Survey (CDRFSS) 2007 and 2010, which were independently carried out in the surveillance points of Disease Surveillance Points system (DSP) system [21,22,23,24,25,26]
Summary
Physical inactivity has been associated with higher risk of many chronic diseases, including coronary heart disease [1,2], ischemic stroke [3,4], type 2 diabetes [5,6], colon cancer [7] and breast cancer [8]. The comparative risk assessment of the Global Burden of Disease Study indicated that insufficient physical activity (IPA) accounted for 3.2 million deaths and 2.8% of disability-adjusted life years in 2010, and ranked tenth among the 20 leading risk factors in attributable burden of disease [14]. The study estimated that approximately 0.5 million deaths and 3.6% of disability-adjusted life years in China were attributable to IPA, and that IPA ranked tenth among the 67 risk factors examined [15]. Little research has examined the role of physical inactivity on the burden of disease in China, especially at the provincial level. Physical inactivity remains an under-researched field in terms of studying burden of disease at provincial level, and no studies have examined the effects of inactivity on life expectancy (LE) in China. The purpose of this study was to estimate mortality risk and LE effects associated with insufficient levels of physical activity in Jiangxi province
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