PMID- 1761477
OWN - NLM
STAT- MEDLINE
DCOM- 19920207
LR  - 20171213
IS  - 8750-7587 (Print)
IS  - 0161-7567 (Linking)
VI  - 71
IP  - 5
DP  - 1991 Nov
TI  - High rates of exogenous carbohydrate oxidation from starch ingested during 
      prolonged exercise.
PG  - 1801-6
AB  - This study compared the gastric emptying and oxidation of two 15% carbohydrate 
      (CHO) solutions: a 22-chain-length glucose polymer (GP) and soluble starch (SS). 
      Six endurance-trained subjects ingested 1,200 ml of either GP or SS while cycling 
      for 90 min at 70% of maximal oxygen consumption (VO2max). Whereas the calculated 
      total CHO oxidation (GP 266.8 +/- 41.9 g; SS 263.6 +/- 28.9 g) and the volume 
      emptied from the stomach (GP 813 +/- 130 ml; SS 919 +/- 116 ml) were similar, the 
      appearance of the 14C label in plasma occurred more rapidly from ingested SS than 
      from GP (P less than 0.001). This resulted in a significantly greater rate of SS 
      oxidation than that from GP (SS 105.9 +/- 21.9 g, GP 49.6 +/- 10.2 g; P less than 
      0.001). Exogenous CHO oxidation from GP accounted for 19% of total CHO oxidation, 
      whereas the corresponding value for SS was 40%. This study suggests that the 
      oxidation of SS and GP solutions ingested during exercise at 70% VO2max is not 
      limited by gastric emptying. Rather, it appears to be either the rate of 
      digestion or absorption of these solutions that determines their utilization.
FAU - Hawley, J A
AU  - Hawley JA
AD  - Liberty Life Chair of Exercise and Sports Science and Medical Research 
      Council/University of Cape Town, South Africa.
FAU - Dennis, S C
AU  - Dennis SC
FAU - Laidler, B J
AU  - Laidler BJ
FAU - Bosch, A N
AU  - Bosch AN
FAU - Noakes, T D
AU  - Noakes TD
FAU - Brouns, F
AU  - Brouns F
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Appl Physiol (1985)
JT  - Journal of applied physiology (Bethesda, Md. : 1985)
JID - 8502536
RN  - 0 (Blood Glucose)
RN  - 0 (Glucans)
RN  - 0 (Insulin)
RN  - 0 (Solutions)
RN  - 9005-25-8 (Starch)
SB  - IM
CIN - J Appl Physiol (1985). 1992 Dec;73(6):2719-22. doi: 10.1152/jappl.1992.73.6.2719. 
      PMID: 1490992
MH  - Adult
MH  - Blood Glucose/metabolism
MH  - Exercise/*physiology
MH  - Gastric Emptying
MH  - Glucans/*metabolism
MH  - Humans
MH  - Insulin/blood
MH  - Male
MH  - Muscles/metabolism
MH  - Osmolar Concentration
MH  - Oxidation-Reduction
MH  - Oxygen Consumption
MH  - Solubility
MH  - Solutions
MH  - Starch/*metabolism
OID - NASA: 92104909
EDAT- 1991/11/01 00:00
MHDA- 1991/11/01 00:01
CRDT- 1991/11/01 00:00
PHST- 1991/11/01 00:00 [pubmed]
PHST- 1991/11/01 00:01 [medline]
PHST- 1991/11/01 00:00 [entrez]
AID - 10.1152/jappl.1991.71.5.1801 [doi]
PST - ppublish
SO  - J Appl Physiol (1985). 1991 Nov;71(5):1801-6. doi: 10.1152/jappl.1991.71.5.1801.