PMID- 23937441
OWN - NLM
STAT- MEDLINE
DCOM- 20140528
LR  - 20131105
IS  - 1465-3478 (Electronic)
IS  - 0963-7486 (Linking)
VI  - 64
IP  - 8
DP  - 2013 Dec
TI  - Effect of the glycemic index of pre-exercise snack bars on substrate utilization 
      during subsequent exercise.
PG  - 1001-6
LID - 10.3109/09637486.2013.825701 [doi]
AB  - PURPOSE: To investigate the effect of the glycemic index (GI) of pre-exercise 
      snack bars on substrate utilization during subsequent moderate intensity 
      exercise. METHODS: Fourteen male participants (Age: 27 +/- 5 yr; BMI: 
      22.5 +/- 2.7 kg m(-2); [Formula: see text]: 48.7 +/- 6.1 mL kg(-1 )min(-1)) completed 
      two trials in a randomized and counterbalanced crossover design. Two iso-caloric 
      snack bars with different GI values (20, LGI versus 68, HGI) were provided to the 
      participants. Ninety minutes later, all participants completed 45 minutes of 
      ergometer cycling at 65% [Formula: see text]. Substrate utilization was measured 
      using indirect calorimetry. RESULTS: During exercise, higher fat oxidation and 
      lower carbohydrate (CHO) oxidation were observed in the LGI trial (LGI versus 
      HGI: CHO, 87.3 +/- 20.1 versus 99.2 +/- 19.0 g, p < 0.05; Fat, 15.0 +/- 5.8 versus 
      9.7 +/- 7.0 g, p < 0.05). CONCLUSION: Compared with an iso-caloric HGI snack bar, 
      pre-exercise LGI snack bar consumption may facilitate a shift of substrate 
      utilization from CHO to fat during subsequent moderate intensity exercise.
FAU - Sun, Feng-Hua
AU  - Sun FH
AD  - Department of Sports Science and Physical Education, The Chinese University of 
      Hong Kong , Shatin , Hong Kong and.
FAU - O'Reilly, John
AU  - O'Reilly J
FAU - Li, Liang
AU  - Li L
FAU - Wong, Stephen Heung-Sang
AU  - Wong SH
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20130812
PL  - England
TA  - Int J Food Sci Nutr
JT  - International journal of food sciences and nutrition
JID - 9432922
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Dietary Fats)
SB  - IM
MH  - Adult
MH  - Blood Glucose/*metabolism
MH  - Calorimetry, Indirect
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*metabolism
MH  - Dietary Fats/*metabolism
MH  - Exercise/*physiology
MH  - Exercise Test
MH  - *Glycemic Index
MH  - Humans
MH  - Male
MH  - Oxidation-Reduction
MH  - *Snacks
MH  - Young Adult
EDAT- 2013/08/14 06:00
MHDA- 2014/05/29 06:00
CRDT- 2013/08/14 06:00
PHST- 2013/08/14 06:00 [entrez]
PHST- 2013/08/14 06:00 [pubmed]
PHST- 2014/05/29 06:00 [medline]
AID - 10.3109/09637486.2013.825701 [doi]
PST - ppublish
SO  - Int J Food Sci Nutr. 2013 Dec;64(8):1001-6. doi: 10.3109/09637486.2013.825701. 
      Epub 2013 Aug 12.