PMID- 8307875
OWN - NLM
STAT- MEDLINE
DCOM- 19940317
LR  - 20171213
IS  - 8750-7587 (Print)
IS  - 0161-7567 (Linking)
VI  - 75
IP  - 5
DP  - 1993 Nov
TI  - Exogenous carbohydrate oxidation from different carbohydrate sources during 
      exercise.
PG  - 2168-72
AB  - The exogenous carbohydrate (CHO) oxidation of naturally enriched [13C]CHO sources 
      with different solubilities was studied during cycling exercise (150 min, 60% 
      maximum work output). Moreover, the effect of adding a 13C tracer with different 
      physical properties than the tracee on exogenous CHO oxidation was investigated. 
      Test solutions (28.5 ml/kg body wt) were water for control of 13C background, 15% 
      soluble partially hydrolyzed corn starch (SOL), 15% insoluble corn starch 
      (In-SOL), and 15% InSOL with [13C6]glucose as tracer. Both the mean and peak 
      exogenous oxidation rates were significantly greater (P < 0.05) in the SOL trial 
      than in the InSOL trial (mean oxidation rate, 0.84 +/- 0.21 and 0.50 +/- 0.15 
      g/min, respectively; peak oxidation rate, 1.10 +/- 0.18 and 0.81 +/- 0.25 g/min, 
      respectively). The amount of the ingested CHO that was oxidized was significantly 
      higher (P < 0.05) in the SOL trial (126 +/- 31 g) than in the InSOL trial (75 +/- 
      25 g). When we added an extrinsic tracer ([13C]glucose), the apparent mean and 
      peak oxidation rates of the trial with InSOL and [13C6]glucose were significantly 
      (P < 0.05) higher (0.91 +/- 0.30 and 1.23 +/- 0.41, respectively) than the InSOL 
      values. These results 1) indicate that the addition of the soluble [13C]glucose 
      tracer to an insoluble starch tracee leads to overestimation of the exogenous CHO 
      oxidation rates and 2) suggest that soluble CHO is oxidized at a higher rate 
      during exercise than isocaloric insoluble CHO.
FAU - Saris, W H
AU  - Saris WH
AD  - Department of Human Biology, University of Limburg, Maastricht, The Netherlands.
FAU - Goodpaster, B H
AU  - Goodpaster BH
FAU - Jeukendrup, A E
AU  - Jeukendrup AE
FAU - Brouns, F
AU  - Brouns F
FAU - Halliday, D
AU  - Halliday D
FAU - Wagenmakers, A J
AU  - Wagenmakers AJ
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Appl Physiol (1985)
JT  - Journal of applied physiology (Bethesda, Md. : 1985)
JID - 8502536
RN  - 0 (Carbon Isotopes)
RN  - 0 (Dietary Carbohydrates)
RN  - 142M471B3J (Carbon Dioxide)
SB  - IM
MH  - Adult
MH  - Carbon Dioxide/metabolism
MH  - Carbon Isotopes
MH  - Dietary Carbohydrates/*metabolism
MH  - Exercise/*physiology
MH  - Exercise Test
MH  - Humans
MH  - Kinetics
MH  - Male
MH  - Oxidation-Reduction
MH  - Oxygen Consumption/physiology
MH  - Pulmonary Gas Exchange/physiology
EDAT- 1993/11/01 00:00
MHDA- 1993/11/01 00:01
CRDT- 1993/11/01 00:00
PHST- 1993/11/01 00:00 [pubmed]
PHST- 1993/11/01 00:01 [medline]
PHST- 1993/11/01 00:00 [entrez]
AID - 10.1152/jappl.1993.75.5.2168 [doi]
PST - ppublish
SO  - J Appl Physiol (1985). 1993 Nov;75(5):2168-72. doi: 10.1152/jappl.1993.75.5.2168.