EFFECT OF A SINGLE BOUT GRADED EXERCISE ON THE CYTOKINES RESPONSE AND INSULIN RESISTANCE INDEX

DAMIRCHI, A.; RAHMANI-NIA, F.; MEHRABANI, J. Effect of a single bout graded exercise on the cytokines response and insulin resistance index. Brazilian Journal of Biomotricity, v. 5, n. 2, p. 132-140, 2011.Interleukin-1 beta (IL-1 beta) the same as Lipocalin-2 (LCN2) is identified a new acute phase protein that secreted by adipose tissue. Effects of acute trainings, particularly the graded exhaustive exercise on these adipokine is unknown. We examine the changes of these adipokines in nine obese (Ob) and nine normal weight (NW) inactive middle-aged (37-49 yrs) males in response to a Bruce treadmill running. Body mass index (BMI), body fat percent (BFP), waist circumference (WC), and waist to hip ratio (WHR) were higher in Ob subjects than the NW. The initial IL-1 beta concentration were 0.08±0.011 pg/ml in Ob and 0.06±0.012 pg/ml in NW subjects (p=0.043). After the exercise, concentration of IL-1 beta was significantly higher than the pre-exercise in Ob (0.21±0.016 pg/ml; p=0.0001) and NW (0.17±0.015 pg/ml; P=0.002) subjects. The LCN2 concentrations were 152.4±29.3 μg/l and 141±36.5 μg/l in Ob and NW subjects at baseline, respectively (P=0.001). LCN2 concentration was increased in Ob subjects by 9.2% (152.4±29.3 to 176.9±30.5 μg/l; P=0.012) and NW by 11% (141±36.5 to 155.7±37.3 μg/l; P=0.032) after exercise than the baseline. The HOMA-IR was decrease significantly by 75% in OB (2.8±0.5 to 1.6±0.5) and by 44.4% in NW (2.6±0.9 to 1.8±0.8) after the exercise. Participation in acute incremental exercise may be led to more increasing of blood inflammatory markers in obese and non-obese males and these changes are considerable in obese individuals. So, it seems participation in an exhaustive graded exercise may not be a useful effort for inactive males.