Associations of mode and time of commute to work with overweight,hyperlipidemia,and fatty liver disease among railway workers in Ji'nan city

Objective To assess the associations of mode and time of commute to work with overweight,obesity,hyperlipidemia,and fatty liver disease among railway workers in Ji'nan city and to provide references for developing intervention strategies.Methods From March to June of 2014,a total of 1 850 railway workers aged 20-59 years were selected from Ji'nan city using stratified cluster random sampling and surveyed with a questionnaire survey,physical examination,and laboratory test.Results Among the participants commuting to work by walking,bicycling,public transportation,and private transportation,the detection rate were 18.5%,33.6%,31.0%,and 38.7% for overweight or obesity;4.6%,10.3%,10.1%,and 11.6% for hyperlipidemia;and 13.0%,19.4%,19.3%,and 25.5% for fatty liver disease,respectively.After adjusting for gender,age,education,marital status,monthly income,smoking,alcohol intake,time of physical activity per week,leisure static time per day,sleeping hours per day,and daily commute time,the results of multi-variate logistic regression analysis demonstrated that compared to those of commuting to work by inactive modes,the participants of commuting to work by walking had a reduced risk of overweight or obesity (odds ratioOR=0.44,95% confidence interval95%CI 0.25-0.77) and those by cycling had a decreased risk of fatty liver disease (OR=0.63,95%CI=0.43-0.95).After adjusting confounding factors except for daily commute time,commuting by walking≤1 hour (OR=0.47,95%CI=0.25-0.86) and >1 hour (OR=0.32,95%CI=0.10-0.99),by cycling≤1 hour (OR=0.61,95%CI=0.40-0.94),and by public transportation≤1 hour (OR=0.46,95%CI=0.28-0.76) were protection factors for overweight or obesity;commuting by public transportation≤1 hour (OR=0.33,95%CI=0.12-0.97)was a protective factor for hyperlipidemia;commuting by cycling≤1 hour (OR=0.57,95%CI=0.35-0.95) and public transportation≤1 hour (OR=0.45,95%CI=0.24-0.84) were protective factors for fatty liver disease.Conclusion Active commute is associated with reduced risk for overweight or obesity,hyperlipidemia,fatty liver disease among railway workers in Ji'nan city.