Abstract:
:The purpose of this study was to determine the effect of pre-exercise high carbohydrate meals with high glycemic index (HGI) or low glycemic index (LGI) on blood leukocyte redistribution during subsequent endurance exercise. Eight male subjects performed a 90-min run on a treadmill at 70 % VO2max 3 h after ingesting an isocaloric HGI or LGI meal with GI values of 77 and 37, respectively. Blood counts of leukocytes, and neutrophils and the neutrophil/lymphocyte ratio were significantly lower in LGI than HGI at 90 min of exercise (P < 0.05). The plasma glucose concentrations were significantly higher in LGI than HGI between 15 min and 45 min of exercise. There were, however, no differences in plasma cortisol, growth hormone, and interleukin-6 concentrations between trials. Thus, the GI of a pre-exercise meal influences leukocyte trafficking and plasma glucose but has limited effects on circulating stress hormone and cytokine responses to exercise.
journal_name
Int J Sport Nutr Exerc Metabauthors
Li TL,Wu CL,Gleeson M,Williams Cdoi
10.1123/ijsnem.14.6.647keywords:
subject
Has Abstractpub_date
2004-12-01 00:00:00pages
647-56issue
6eissn
1526-484Xissn
1543-2742journal_volume
14pub_type
临床试验,杂志文章,随机对照试验abstract::This study implemented a 2-week high carbohydrate (CHO) diet intended to maximize CHO oxidation rates and examined the iron-regulatory response to a 26-km race walking effort. Twenty international-level, male race walkers were assigned to either a novel high CHO diet (MAX = 10 g/kg body mass CHO daily) inclusive of gu...
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journal_title:International journal of sport nutrition and exercise metabolism
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 临床试验,杂志文章
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 杂志文章,评审
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章
doi:10.1123/ijsnem.21.4.271
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 杂志文章,随机对照试验
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journal_title:International journal of sport nutrition and exercise metabolism
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,评审
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