title: Effects of insufficient physical activity on mortality and life expectancy in Jiangxi province of China, 2007-2010.
abstract: BACKGROUND
  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.
  
  
  RESULTS
  Prevalence 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.
  
  
  CONCLUSIONS
  Adults 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.
authors.affiliation: Department of Preventive Medicine, School of Basic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Xu
authors.affiliation: Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America.
authors.forename: Xuemei
authors.initials: X
authors.lastname: Sui
authors.affiliation: National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
authors.forename: Shiwei
authors.initials: S
authors.lastname: Liu
authors.affiliation: Division of Chronic Disease Control and Prevention, Jiangxi Province Center for Disease Control and Prevention, Nanchang, Jiangxi, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Epidemiology and Biostatisitcs, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America.
authors.forename: Junxiu
authors.initials: J
authors.lastname: Liu
authors.affiliation: National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
authors.forename: Yichong
authors.initials: Y
authors.lastname: Li
authors.affiliation: The Second People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China.
authors.forename: Shouqing
authors.initials: S
authors.lastname: Huang
authors.affiliation: Division of Exercise Rehabilitation, Beijing Sport University Sport Rehabilitation College, Beijing, China.
authors.forename: Zhengzhen
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America.
authors.forename: Steven N
authors.initials: SN
authors.lastname: Blair
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008017:Life Expectancy; D008297:Male; D008875:Middle Aged; D009010:Monte Carlo Method; D009026:Mortality; D009043:Motor Activity; D015995:Prevalence; D012307:Risk Factors; D057185:Sedentary Behavior; D055815:Young Adult