Oral / Poster Presentation File
12. Department of exercise physiology, Shahrood branch, Islamic azadi university, Semnan, Iran
2Department of sport sciences, Faculty of human sciences, Damghan University, Semnan, Iran
Methods: The 24 male (age 24.8 ± 0.35 yrs, body mass 76.1 ± 3.5 kg, height 1.77 ± 0.02 m, body fat percentage 11.1 ± 3.23, VO2 max 51.18 ± 0.65 ml/ kg/ min) performed two 90 min runs on a treadmill at 70 % VO2 max two hours after ingesting a high glycemic index or low glycemic index meal. Each isocaloric test meal contained 1 g/ kg body mass of carbohydrate and the glycemic index values were 94 and 40, respectively. Trials were separated by at least 7 days in counterbalanced order. Results were analyzed using a two way ANOVA with post hoc Bonferoni comparison as appropriate (p<0.05).
Results: Plasma glucose concentrations were significantly higher in LGI than HGI immediately after exercise. However, there were no significant differences in circulating leukocyte and neutrophil counts, plasma cortisol, interleukin-6 concentrations between trials.
Conclusion: Ingestion of a LGI meal 2 h before sub maximal exercise maintains plasma glucose concentration during subsequent exercise when compared with ingestion of a HGI meal. However, it seems to have limited effects on circulating leukocyte and neutrophil counts, circulating stress hormone and cytokine responses to exercise.
