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目的研究1997—2009年我国9省区18~49岁成年居民身体活动状况及变化趋势。方法利用“中国健康与营养调查”资料中选取1997、2000、2004、2006和2009年5轮调查有完整身体活动数据的18~49岁健康成年居民25 507人作为研究对象,计算该人群每周身体活动量。结果男、女性成年居民身体活动量从1997年的358.7 metabolic equivalent-hours(MET-hrs)/周和403.1 MET-hrs/周分别下降至2009年的255.8 METhrs/周和249.0 MET-hrs/周;城市、农村成年居民身体活动量从1997年的311.1 MET-hrs/周和416.9 MET-hrs/周分别下降至2009年的181.4 MET-hrs/周和285.3 MET-hrs/周,男性、女性、城市、农村成年居民身体活动量在不同调查年间比较差异均有统计学意义(P<0.01)。成年居民以静态活动为主要休闲方式的人群比例从1997年的89.0%升高至2009年的91.2%;以步行和骑自行车为主要出行方式的人群比例从1997年的70.0%下降至2009年的47.1%,成年居民休闲方式及出行方式的人群比例在不同调查年间比较差异均有统计学意义(P<0.01)。结论我国9省区18~49岁成年居民身体活动量发生显著变化,该人群身体活动量的大幅度下降值得关注。
Objective To study the physical activity status and changing trend of adult residents aged 18-49 in nine provinces and autonomous regions of China from 1997 to 2009. Methods According to the “China Health and Nutrition Surveys” data, 25 507 healthy adults aged 18-49 years from 5 rounds of survey in 1997, 2000, 2004, 2006 and 2009 with complete physical activity data were selected as subjects to calculate the population The amount of physical activity per week Results The physical activity of male and female residents decreased from 358.7 metabolic equivalent-hours (MET-hrs) / week and 403.1 MET-hrs / week in 1997 to 255.8 METhrs / week and 249.0 MET-hrs / week in 2009 respectively. Physical activity of urban and rural adult inhabitants decreased from 311.1 MET-hrs / week and 416.9 MET-hrs / week in 1997 to 181.4 MET-hrs / week and 285.3 MET-hrs / week in 2009, respectively, as men, women and cities . The amount of physical activity of adult residents in rural areas in different survey years were significantly different (P <0.01). The percentage of adult residents living with static activities as the main leisure mode increased from 89.0% in 1997 to 91.2% in 2009; the proportion of people who used to walk and cycle as the main mode of travel dropped from 70.0% in 1997 to 47.1%. The proportions of the leisure and traveling modes of adult residents in different survey years were significantly different (P <0.01). Conclusion The physical activity of 18-49-year-old residents in 9 provinces and autonomous regions in China has changed significantly. The significant drop in physical activity of this population deserves attention.