[Relationship between physical activity and the incidence of metabolic syndrome in Chinese adults: a prospective cohort study].
2013
Objective To investigate the association between physical activity (PA) and the incidence of metabolic syndrome (MS) in Chinese adults.Methods Data on PA and other variables were obtained at the baseline examination of China Multi-center study of Cardiovascular Epidemiology in 1998 and of International Collaborative study of Cardiovascular Disease in Asia (InterASIA) during 2000-2001.Follow-up study was conducted in 2007-2008.A total of 11 512 Chinese adults aged 35-74 years (5563 men and 5949 women) were included in the final data analysis.Information on demographics,PA,smoking and alcohol consumption were obtained and components of MS were examined.Participants were divided into four groups according to quartile of total metabolic equivalent (MET) values per day.In addition,subjects were grouped into the following categories according to occupational PA:inactive,light,moderate and vigorous.Binary logistic model was used to examine the association between PA and the incidence of MS.Results A total of 2527 cases with MS were documented during an average following up of 8.1 years.The annual incidence rate of MS was 2.71% (2527/93 178.68).Mter multivariate logistic regression analysis,compared with participants with total PA volume < 32.0 MET · h · d-1 (annual incidence rate was 3.19% (697/21 830.74)),the RR (95 % CI) value of participants with total PA volume during 32.00-37.85,37.86-52.29,and ≥52.30 MET· h · d-1 was 1.05(0.92-1.19),0.98(0.86-1.12),and 0.68 (0.59-0.80),respectively (xtrend =34.23,P < 0.05),with corresponding annual incidence rates of 2.82% (690/24 504.25),2.73% (661/24 179.36) and 2.11% (479/22 664.33).In addition,compared to inactive occupational PA (annual incidence rate was 2.76% (402/14 588.33)),the corrcspondingRR(95%CI) value was 0.80(0.69-0.92),0.70(0.59-0.82),and 0.54(0.45 0.65)(x2trend =42.34,P < 0.05),and the annual incidence rates were 2.86% (648/22 663.41),2.40% (455/18 956.14) and 1.89% (344/18 173.86) in participants with light,moderate and vigorous occupational PA,respectively.Conclusion Both increased total PA volume and occupational PA intensity are significantly associated with decreased risk of incidence of MS.
Key words:
Metabolic syndrome X ; Incidence ; Cohort studies; Physical activity
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