Journal of Food and Nutrition Research
ISSN (Print): 2333-1119 ISSN (Online): 2333-1240 Website: http://www.sciepub.com/journal/jfnr Editor-in-chief: Prabhat Kumar Mandal
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Journal of Food and Nutrition Research. 2015, 3(2), 88-93
DOI: 10.12691/jfnr-3-2-2
Open AccessArticle

Comparison between Preexercise Meals Intake Effect with Different Glycemic Load on Exercise Performance in Female Athletes

Reza Ghiasvand1, 2, Zinat Sharifhosein1, 3, , Ahmad Esmailzadeh1, 2, Awat Feizi4, GHolamreza Askari1, 2, Mohammad Marandi5 and Zahra Maghsoudi6

1Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

2Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran

3MSc student of Health Science in Nutrition, Isfahan University of Medical Sciences, Isfahan, Iran

4Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran

5Department of Physical Educational and Sport Sciences, The University of Isfahan, Isfahan, Iran

6PhD student of Science in Nutrition, Isfahan University of Medical Sciences, Isfahan, Iran

Pub. Date: February 02, 2015

Cite this paper:
Reza Ghiasvand, Zinat Sharifhosein, Ahmad Esmailzadeh, Awat Feizi, GHolamreza Askari, Mohammad Marandi and Zahra Maghsoudi. Comparison between Preexercise Meals Intake Effect with Different Glycemic Load on Exercise Performance in Female Athletes. Journal of Food and Nutrition Research. 2015; 3(2):88-93. doi: 10.12691/jfnr-3-2-2

Abstract

Athletes usually search for strategies to optimize their performance. Manipulation of carbohydrate (CHO) resources glycemic load in order to optimizing athletic performance provides new research areas in nutritional sport. Purpose of this study is to examine the effects of two isocaloric meals with different glycemic load (GL) on exercise performance and serum free fatty acids. Thirty six non-professional athletic women with ages between 19 and 24 were assigned in a double blinded randomized clinical trial with two period cross-over design. Participants in each group received a high or low GL meal as a breakfast, and 7-day wash out period is determined. serum free fatty acid (FFA) measurements were performed before and after each phase of intervention.3 hour After ingestion of a meal, participants run to exhaustion, in a 20 meters shuttle run pacer. Time to exhaustion (TTE) was recorded as a measure of exercise performance. In an attempt to ensure that subjects run to exhaustion, rating of perceived exertion (RPE) was measured, using a Borg scale, too. The ingestion of a low GL or high GL pre-exercise meal did not lead to different TEE and RPE at 3 hours before exercise in female athletic students. Mean changes of serum FFA were higher in low GL than high GL meal. Consumption of a low GL meal compared with a high GL meal at 3-hr before a shuttle run pacer, was not associated with significant changes in TEE and RPE levels but low GL meal led to more increase serum FFA than high GL.

Keywords:
glycemic load glycemic index pre-exercise meal exercise performance metabolism

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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