PMID- 20479489
OWN - NLM
STAT- MEDLINE
DCOM- 20100622
LR  - 20191111
IS  - 1526-484X (Print)
IS  - 1526-484X (Linking)
VI  - 20
IP  - 2
DP  - 2010 Apr
TI  - Glycemic index and endurance performance.
PG  - 154-65
AB  - The aim of this review is to provide an up-to-date summary of the evidence 
      surrounding glycemic index (GI) and endurance performance. Athletes are commonly 
      instructed to consume low-GI (LGI) carbohydrate (CHO) before exercise, but this 
      recommendation appears to be based on the results of only a few studies, whereas 
      others have found that the GI of CHO ingested before exercise has no impact on 
      performance. Only 1 study was designed to directly investigate the impact of the 
      GI of CHO ingested during exercise on endurance performance. Although the results 
      indicate that GI is not as important as consuming CHO itself, more research in 
      this area is clearly needed. Initial research investigating the impact of GI on 
      postexercise recovery indicated consuming high-GI (HGI) CHO increased muscle 
      glycogen resynthesis. However, recent studies indicate an interaction between LGI 
      CHO and fat oxidation, which may play a role in enhancing performance in 
      subsequent exercise. Despite the fact that the relationship between GI and 
      sporting performance has been a topic of research for more than 15 yr, there is 
      no consensus on whether consuming CHO of differing GI improves endurance 
      performance. Until further well-designed research is carried out, athletes are 
      encouraged to follow standard recommendations for CHO consumption and let 
      practical issues and individual experience dictate the use of HGI or LGI meals 
      and supplements before, during, and after exercise.
FAU - Donaldson, Carolyn M
AU  - Donaldson CM
AD  - Dept. of Human Nutrition, University of Otago, Dunedin, New Zealand.
FAU - Perry, Tracy L
AU  - Perry TL
FAU - Rose, Meredith C
AU  - Rose MC
LA  - eng
PT  - Journal Article
PT  - Review
PL  - United States
TA  - Int J Sport Nutr Exerc Metab
JT  - International journal of sport nutrition and exercise metabolism
JID - 100939812
RN  - 0 (Dietary Carbohydrates)
RN  - 9005-79-2 (Glycogen)
SB  - IM
EIN - Int J Sport Nutr Exerc Metab. 2011 Jun;21(3):262-4
MH  - Dietary Carbohydrates/administration & dosage/classification/*metabolism
MH  - *Glycemic Index
MH  - Glycogen/*metabolism
MH  - Glycogenolysis/physiology
MH  - Humans
MH  - Oxygen Consumption/physiology
MH  - Physical Endurance/*physiology
MH  - Postprandial Period
RF  - 89
EDAT- 2010/05/19 06:00
MHDA- 2010/06/23 06:00
CRDT- 2010/05/19 06:00
PHST- 2010/05/19 06:00 [entrez]
PHST- 2010/05/19 06:00 [pubmed]
PHST- 2010/06/23 06:00 [medline]
AID - 10.1123/ijsnem.20.2.154 [doi]
PST - ppublish
SO  - Int J Sport Nutr Exerc Metab. 2010 Apr;20(2):154-65. doi: 
      10.1123/ijsnem.20.2.154.