Aerobic exercise and insulin resistance indicators in sedentary women

Abstract

Abstract The aim of this study is to determine the concordance between the insulin resistance indicators, HOMA and TyG, because of a moderate intensity aerobic exercise session in sedentary young women. Methods. A total of 22 sedentary women between 18 and 35 years of age participated in this research. HOMA and TyG indices were determined before and after a moderate intensity aerobic exercise (MIAE), based on Heart Rate reserve. Spearman and Kendall's Tau-b were used to evaluate the association between those variables. Values were compared using the Bland & Altman graphs. Kappa Coefficient was used to estimate the proportion of concordance observed between both indicators. Significant differences were considered at a p≤0.01. Results. Spearman's Rho correlation and Kendall's Tau-b before MIAE were significant and direct (r=0.634, p<0.001 and r=0.480, p<0.01; respectively) with a Cohen's Kappa index of k=0.585. After MIAE, Spearman's Rho correlation and Kendall's Tau-b were also significant and direct r=0.650, p<0.001 and r=0.504, p<0.001, respectively, with a lower Cohen's Kappa index (k=0.390). Conclusions. TyG index is a good indicator to evaluate insulin resistance at baseline situations. However, this index doesn't properly determine insulin resistance after a MIAE.