Associations Between Muscular Fitness And Metabolic Syndrome In Japanese Women And Men

Abstract

METHODS: Data was obtained from 442 men and women (22-64 yrs). PA was assessed during 7 days using a Sensewear armband and an electronic diary. Total PA and active energy expenditure (AEE, metmin/day ≥ 3 met) in multiple domains of daily life were analyzed. Participants were divided into tertiles of PA and classified as having the MS or individual risk factors using the NCEP-ATPIII definition. Spearman correlations and logistic regression were used to examine associations between PA and (risk factors for) the MS. Odds ratios (OR) were calculated against the reference group of the least active. Analyses were adjusted for gender, age, education, smoking and alcohol consumption. RESULTS:The MS was observed in 6% of subjects. Hypertension, hypertriglyceridemia, low HDL levels, abdominal obesity and hyperglycemia was found in 39%, 16%, 13%, 11% and 2% of subjects respectively. Low correlation coefficients (-0.61 to 0.38) between PA and the risk factors were obtained. Subjects with a moderate or high PA level (met), high amounts of moderate, vigorous or total PA (min/day) or low sitting time had a lower odds of having the MS (OR: 0.12 -0.24) or individual risk factors (OR: 0.02 -0.55). Light PA was not associated with the MS or individual risk factors. Subjects with a moderate and high number of steps were less likely to have abdominal obesity, hypertriglyceridemia or hypertension. The OR for abdominal obesity, hypertriglyceridemia and low HDL in the high leisure time AEE group was 0.42, 0.33 and 0.34 respectively. Subjects with moderate and high AEE during transport or household chores were less likely to have abdominal obesity, hypertriglyceridemia or hypertension (OR: 0.16 -0.66). In addition, the OR for low HDL in the high household AEE group was 0.15. High occupational AEE was only associated with hypertriglyceridemia (OR: 0.36). CONCLUSION:High levels of total PA or AEE during leisure time, transport and household chores were associated with lower odds of the MS and individual risk factors. (No relationships reported)The metabolic syndrome is a complex interrelated risk factor for cardiovascular disease and type 2 diabetes mellitus. High cardiorespiratory fitness was known to contribute a prevention of metabolic syndrome. However, a little is known regarding the association between muscular fitness and metabolic syndrome in Japanese. PURPOSE:To examine the associations between muscular fitness and metabolic syndrome in Japanese women and men. METHODS:This cross-sectional study included 335 women and 209 men, aged 30-79 years. Metabolic syndrome was determined according to the criteria of International Diabetes Federation (IDF). Muscular fitness was evaluated by muscular fitness score (MFS) which was determined using Z-scores from hand grip strength and sit-ups. Participants were classified by tertile of MFS such as low, middle and high MFS group. We used logistic regression to estimate odds ratios for the incidence of metabolic syndrome in each group. RESULTS:The prevalence of metabolic syndrome was 27.2% in wome...