Document Type : Research Paper

Authors

1 Ph.D. Student in Exercise Biochemistry and Metabolism, University of Mazandaran

2 Associate Professor of Exercise Physiology, University of Mazandaran

3 Assistant Professor, Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences

Abstract

By considering the growing trend of obesity, along with metabolic disorders among children, especially insulin-resistance (IR), the present study aimed to evaluate the effect of aerobic-training on the levels of spexin, lipid-accumulation product (LAP), visceral-adiposity (VAI), triglyceride-glucose (TyG) and McAuley indices among early-pubertal obese/overweight-girls. 32 obese/overweight-girls (age 9.62±0.75 years-old, weight 49.71±9.26 kg, BMI 25.40±2.92 kg/m2, Tanner-stage 2-3) voluntarily participated in this study, who were assigned into interval-walking (n=12), continuous-walking (n=11) and control (n=9) groups. The subjects were trained three-times/week for two-months (30-min walk in the continuous and interval-groups with 60-75%HRmax and 70-85%HRmax, respectively). Spexin concentration was measured by ELISA method, and visceral-adiposity and IR indices were calculated according to the equations. Factorial repeated-measured ANOVA was used for data analysis. Based on the results, the interaction-effect of time×group was statistically significant for the LAP (P=0.007), VAI (P=0.045), McAuley (P=0.026) and TyG (P=0.001), while it was insignificant for the spexin (P=0.836). Regarding the control group, the LAP, VAI, and TyG significantly increased (P=0.037, P=0.046, P=0.005, respectively) while a significant decrease happened for McAuley (P=0.030). In the continuous-walking group, a significant decrease was observed in LAP (P=0.002), and TyG (P=0.002), while VAI and McAuley levels tended to decrease (P=0.057) and increase (P=0.071), respectively. In the interval-walking group, there was insignificant change in the LAP, VAI, TyG, and McAuley (P=0.129, P=0.660, P=0.390, P=0.357, respectively). The findings showed that the continuous-walking for eight-weeks could reverse the increase in visceral-adiposity and IR indices in the control group, irrespective of the changes in serum levels of spexin.

Keywords

Main Subjects

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