Comparative Evaluation of the Effect of the Foods with Different Glycemic Indices on Blood Glucose and Serum Free Fatty Acids in Cycling, Male Athletes

Asadi, J; Eshghinia, S; Taleban, FA; Vaghari, GR; Esmaillzadeh, A

Volume 7, Issue 4 (winter[PERSIAN] 2014) mljgoums 2014, 7(4): 19-26 | Back to browse issues page

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Asadi J, Eshghinia S, Taleban F, Vaghari G, Esmaillzadeh A. Comparative Evaluation of the Effect of the Foods with Different Glycemic Indices on Blood Glucose and Serum Free Fatty Acids in Cycling, Male Athletes. mljgoums 2014; 7 (4) :19-26
URL: http://mlj.goums.ac.ir/article-1-340-en.html

Comparative Evaluation of the Effect of the Foods with Different Glycemic Indices on Blood Glucose and Serum Free Fatty Acids in Cycling, Male Athletes

J Asadi¹

, S Eshghinia²

, FA Taleban³

, GR Vaghari⁴

, A Esmaillzadeh

⁵

1- Assistant Professor of Biochemistry, Biochemistry and Metabolic Disorders Research Center, Gholestan University of Medical Sciences, Gorgan, Iran
2- Assistant Professor of Nutrition, Biochemistry and Metabolic Disorders Research Center and Cardiovascular Research Center, Gholestan University of Medical Sciences, Gorgan, Iran
3- Professor of Nutrition, Department of Clinical Nutrition &Dietetic, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4- Assistant Professor of Nutrition, Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
5- Associate Professor of Nutrition, Food Security Research Center, Deptartment of Community Nutrition, Faculty of , esmaillzadeh@hlth.mui.ac.ir

Abstract: (22880 Views)

Abstract Background and Objective: Carbohydrates are considered as the major source of energy in physical activity. Studies show that consumption of carbohydrate foods before exercise can balance blood glucose and free fatty acids and increase athletes’ performance. In this study , we compared the effect of three kinds of foods with different glycemic indices on blood glucose (BG) and serum free fatty acids (FFA) in cycling ,male athletes. Material and Methods: In this clinical trial, 21 members of national cycling team randomly allocated to three equal groups of glucose (low glycemic index) ، lentil (low glycemic index) and potato (high glycemic index). First, Fasting blood samples (5ml) were obtained to measure BG and FFA . Then the subjects were asked to eat their foods. After 45 mins of rest, they pedaled with maximal oxygen consumption VO2max) for two hours and again their blood samples were taken to compare with the levels of before interventions. Results: Glucose consumption resulted in a significant decrease in FFA level after 2 hours of pedaling (P = 0.01) but no significant change in BG level. Plasma glucose was higher after eating lentil than that of potato (P<0.05), but it was not true for FFA level of both groups. Conclusion: based on the results, the pre-exercise use of low glycemic index (lentil) compared to high glycemic index (potato) can better lead to increased blood glucose during exercise. Keywords: Glycemic Index, Blood Glucose, Serum Free Fatty Acids, Cyclists

Keywords: Glycemic Index, Blood Glucose, Serum Free Fatty Acids, Cyclists

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Research Article: Original Paper |
Received: 2013/09/11 | Accepted: 2013/10/29 | Published: 2013/10/29 | ePublished: 2013/10/29