PMID- 8125902
OWN - NLM
STAT- MEDLINE
DCOM- 19940411
LR  - 20171213
IS  - 8750-7587 (Print)
IS  - 0161-7567 (Linking)
VI  - 75
IP  - 6
DP  - 1993 Dec
TI  - Oxidation rates of orally ingested carbohydrates during prolonged exercise in 
      men.
PG  - 2774-80
AB  - Six male volunteers exercised on a cycle ergometer at 65% of maximal work load 
      for 120 min on six occasions while ingesting water (W) only, four doses of 
      maltodextrin (M) [0.92, 1.85, 2.77, and 3.70 g/kg body wt (4, 8, 12, and 16% M, 
      respectively)], and sucrose (S) [1.85 g/kg body wt (8% S)]. Drinks were given 
      during warm-up (8 ml/kg body wt) and each 15 min during exercise (2 ml/kg body 
      wt). M and S were of high 13C natural abundance. Total carbohydrate (CHO) and fat 
      oxidations were calculated from the nonprotein respiratory exchange ratio. M and 
      S increased total CHO oxidation compared with W; no difference was observed 
      between CHO solutions. Total CHO oxidation decreased continuously with time and 
      more rapidly after W than after M or S. Fat oxidation increased continuously in 
      all treatments. Oxidation rates of ingested CHO were 52 +/- 19, 76 +/- 12, 86 +/- 
      10, and 91 +/- 9 g/2 h for 4, 8, 12, and 16% M, respectively. The oxidation rate 
      of S was 81 +/- 10 g/2 h (not different from 8% M), which indicated that the 
      glucose polymer had no advantage over S. Oxidation rates of M and S increased to 
      a plateau after 90-120 min of exercise. For all solutions except 4% M, the 
      plateau oxidation rate was close to 1.0 g/min. Differences between 8, 12, and 16% 
      M and 8% S were minimal such that ingestion of 8% M or S may well have had an 
      optimal ergogenic effect.(ABSTRACT TRUNCATED AT 250 WORDS)
FAU - Wagenmakers, A J
AU  - Wagenmakers AJ
AD  - Department of Human Biology, University of Limburg, Maastricht, The Netherlands.
FAU - Brouns, F
AU  - Brouns F
FAU - Saris, W H
AU  - Saris WH
FAU - Halliday, D
AU  - Halliday D
LA  - eng
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 (Dietary Carbohydrates)
RN  - 0 (Dietary Fats)
RN  - 0 (Polysaccharides)
RN  - 142M471B3J (Carbon Dioxide)
RN  - 57-50-1 (Sucrose)
RN  - 7CVR7L4A2D (maltodextrin)
SB  - IM
MH  - Adult
MH  - Bicycling
MH  - Calorimetry
MH  - Carbon Dioxide/metabolism
MH  - Dietary Carbohydrates/*pharmacokinetics
MH  - Dietary Fats/pharmacokinetics
MH  - Exercise/*physiology
MH  - Humans
MH  - Male
MH  - Oxidation-Reduction
MH  - Oxygen Consumption/physiology
MH  - Polysaccharides/pharmacokinetics
MH  - Sucrose/pharmacokinetics
EDAT- 1993/12/01 00:00
MHDA- 1993/12/01 00:01
CRDT- 1993/12/01 00:00
PHST- 1993/12/01 00:00 [pubmed]
PHST- 1993/12/01 00:01 [medline]
PHST- 1993/12/01 00:00 [entrez]
AID - 10.1152/jappl.1993.75.6.2774 [doi]
PST - ppublish
SO  - J Appl Physiol (1985). 1993 Dec;75(6):2774-80. doi: 10.1152/jappl.1993.75.6.2774.