Effects of eight-week core muscle resistance training on metabolic syndrome risk factors in overweight taxi drivers
Huang, L, Ma, J & Zhou, S 2010, 'Effects of eight-week core muscle resistance training on metabolic syndrome risk factors in overweight taxi drivers', paper presented to Exercise and Sports Science Australia Conference: Research to practice, science and nutrition in exercise and sport, Gold Coast, Qld., 9-10 April.
Introduction: There is a high prevalence of abdominal obesity and back problems in middle-aged taxi driver in Tianjin, as discovered in our recent studies. Previous interventions have focused on aerobic exercise. However, resistance exercise that improves core muscle strength would also benefit the drivers in prevention of back problems. This study aimed to determine the effects of core muscle strength training with an education program on weight loss and control of health risk factors for taxi drivers with moderate overweight and/or abdominal obesity. Methods: 34 male taxi drivers, age 45-55 yrs, BMI 27.05-31.87, volunteered for the study. They were randomly divided into Resistant Training group (RT, n=18）and Control Group (CG, n=16). The RT trained core muscle groups with 14 exercises, 60 min per session, 3 sessions per week for 8 weeks. Both groups participated in weight control education workshops once a week. Results: Paired t-tests indicated significant decrease in waist (-3.0%) and hip circumference (-1.77%, both p<0.05), while no significant changes in body mass, BMI, and waist-to-hip ratio in RT. Serum triglycerides (-12.3% on average), CHO (-7.4%), LDL (-9.7%), insulin (-7.0%), leptin (-27.8%) and vistatin (-5.3%) reduced significantly; and HDL (5.1%) increased significantly in RT (all p<0.05). No change was found in all measured variables in CG. Conclusions: The eight-week core muscle resistance exercise program effectively reduced risk factors of metabolism syndrome for the middle-aged taxi drivers. However, education-only did not produce such effects in the CG.