Sport Physiology & Management Investigations

Sport Physiology & Management Investigations

A Comparison of the Effect of Glutamine-Carbohydrate and Carbohydrate Supplementation on Oxidative Stress, Plasma Cortisol and Insulin after a High Intensity Interval Training Session

Document Type : Original Article

Authors
Abdolreza Kazemi 1
Meysam Archangi 2
Masoud Rahmati 3
Hadi Kerendi 4
1 Associate Professor of Exercise Physiology, Department of Sport Sciences, Faculty of Literature and Humanities, Vali E Asr University, Rafsanjan, Iran.
2 MSc of Exercise Physiology, Faculty of Literaure and Humanities, Islamic Azad University, Kerman, Iran
3 3- Associate Professor of Exercise Physiology, Department of Sport Sciences, Faculty of Literature and Humanities, Lorestan University, Khoramabad, Iran.
4 PhD of Exercise Physiology, Faculty of Literature and Humanities, Lorestan University, Khoramabad, Iran.
Abstract
 
There is little research on the effect of glutamine supplement in combination with carbohydrates on athletes' various blood factors. Thus, the aim of the present study was to compare the effect of glutamine-carbohydrate and carbohydrate supplementation on oxidative stress, plasma cortisol and insulin after a high intensity interval training session. 20 eligible athlete students were randomly assigned to two supplement groups (each group 7 subjects) and one control group (n=6).  Experimental groups performed one session of high intensity interval training, and they received dietary supplement. Blood samples were collected before, immediately, 3 hours and 24 hours after the training to evaluate the research variables. The results showed a significant increase (P<0.05) in plasma GSH in 3 and 24 hours after the training, and an increase in plasma TAC 24 hours after the training in the carbohydrate-glutamine group compared with the carbohydrate group. Also, there was a significant decrease in cortisol immediately and 3 hours after the training in the carbohydrate-glutamine group compared with the carbohydrate group. Regarding these findings, it seems that supplementation of glutamine in combination with carbohydrates compared with carbohydrate supplementation after a HIIT session has been able to increase the antioxidant capacity and also reduce cortisol and catabolic conditions.
Keywords
cortisol
glutamine
high intensity interval training
insulin
oxidative stress