Homogeneous response of immune system and glucose kinetics to preexercise breakfast with high and low glycemic index
Poster Presentation
Paper ID : 1603-SSRC
Authors
1گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه گیلان، رشت، گیلان، ایران
2گروه فیزیولوژی ورزشی (گرایش تغذیه ورزش)، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه گیلان، رشت، گیلان، ایران
Abstract
Background: A carbohydrate-rich meal before exercise affects an endurance athlete's immunity. The purpose of this study was to look into how young male athletes' immune systems were affected by eating an isoenergetic, high- and low-glycemic index breakfast before an exercise session.
Methods: This randomized quasi-experimental (crossover) study was conducted on 14 male athletes who were students of physical education with an age range of 20 to 30 years at Guilan University. The participants were divided into two conditions of low (46) and high (75) glycemic index. The breakfasts were designed for each subject ensuring that contained 2 gr/kg CHO and identical in other macronutrients. Subjects began cycling for 10 minutes at 60% HRmax to warm up and then continued cycling at 75% HRmax for 90 minutes. Measurements were conducted in fasting state, pre and post exercise on blood count leukocytes, leukocytes subsets, platelets, plasma glucose and insulin. The systemic inflammatory status was evaluated by NLR, PLR, SII and SIRI.
Results: The mean age, height, weight, BMI, body fat mass and body fat percentage was 23.71±2.09 years, 181±0.86 cm, 78.21±12.81 kg, 23.78±3.10 kg/m2, 12.06±3.66 kg and 15.24±3.00% respectively. There were no significant differences between two conditions in blood glucose (P=0.773), insulin (P=0.123), total number of leukocytes (P=0.76), NLR (P=0.124), PLR (P=0.760) and SII (P=0.381). Only SIRI was significant across conditions (P=0.003).
Conclusion: Most studied variables (SIRI excluded) did not demonstrate a distinction between HGI and LGI. From a clinical perspective, the range of glucose kinetic and immune markers also did not change significantly. The glycemic index of carbohydrates is not as significant as the consumption of a carbohydrate-rich meal prior to an endurance exercise.
Methods: This randomized quasi-experimental (crossover) study was conducted on 14 male athletes who were students of physical education with an age range of 20 to 30 years at Guilan University. The participants were divided into two conditions of low (46) and high (75) glycemic index. The breakfasts were designed for each subject ensuring that contained 2 gr/kg CHO and identical in other macronutrients. Subjects began cycling for 10 minutes at 60% HRmax to warm up and then continued cycling at 75% HRmax for 90 minutes. Measurements were conducted in fasting state, pre and post exercise on blood count leukocytes, leukocytes subsets, platelets, plasma glucose and insulin. The systemic inflammatory status was evaluated by NLR, PLR, SII and SIRI.
Results: The mean age, height, weight, BMI, body fat mass and body fat percentage was 23.71±2.09 years, 181±0.86 cm, 78.21±12.81 kg, 23.78±3.10 kg/m2, 12.06±3.66 kg and 15.24±3.00% respectively. There were no significant differences between two conditions in blood glucose (P=0.773), insulin (P=0.123), total number of leukocytes (P=0.76), NLR (P=0.124), PLR (P=0.760) and SII (P=0.381). Only SIRI was significant across conditions (P=0.003).
Conclusion: Most studied variables (SIRI excluded) did not demonstrate a distinction between HGI and LGI. From a clinical perspective, the range of glucose kinetic and immune markers also did not change significantly. The glycemic index of carbohydrates is not as significant as the consumption of a carbohydrate-rich meal prior to an endurance exercise.
Keywords