Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
|
pubmed:dateCreated |
1979-11-21
|
pubmed:abstractText |
Eight male and female students were studied during exercise to exhaustion on a bicycle ergometer at 80 and 100% of Vo2max following the ingestion of water (W), 75 g of glucose (G) or a liquid meal (M) (10 g protein, 12.5 g fat, 15 g CHO). When compared to the endurance ride (80% Vo2max) in the W treatment, endurance performance time was reduced by 19%, (p less than .05) (53.2 to 43.2 min) as a result of the preexercise glucose feeding (Trial G). No difference in performance at 80% Vo2max was found between the W and M trials. The preexercise feedings had no effect on exercise time to exhaustion at 100% Vo2max. During the G and M trials at 80% Vo2max, most of the subjects demonstrated a transient decline in serum glucose (less than 3.5 mM). After 30-40 min. of exercise, however, serum glucose returned to normal and was seldom low at the time of exhaustion. Serum free fatty acids (FFA) were depressed throughout the G trial. The results of these experiments indicate impaired lipid mobilization following CHO ingestion. The present data support our earlier findings (11) which demonstrate that glucose feedings 30-45 minutes before endurance exercise increase the rate of CHO oxidation and impede the mobilization of FFA, thereby reducing exercise time to exhaustion.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Blood Glucose,
http://linkedlifedata.com/resource/pubmed/chemical/Dietary Carbohydrates,
http://linkedlifedata.com/resource/pubmed/chemical/Dietary Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Fatty Acids, Nonesterified,
http://linkedlifedata.com/resource/pubmed/chemical/Glucose,
http://linkedlifedata.com/resource/pubmed/chemical/Glycerol
|
pubmed:status |
MEDLINE
|
pubmed:issn |
0025-7990
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
11
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1-5
|
pubmed:dateRevised |
2008-11-21
|
pubmed:meshHeading |
pubmed-meshheading:582616-Adult,
pubmed-meshheading:582616-Animals,
pubmed-meshheading:582616-Blood Glucose,
pubmed-meshheading:582616-Dietary Carbohydrates,
pubmed-meshheading:582616-Dietary Proteins,
pubmed-meshheading:582616-Fatty Acids, Nonesterified,
pubmed-meshheading:582616-Female,
pubmed-meshheading:582616-Glucose,
pubmed-meshheading:582616-Glycerol,
pubmed-meshheading:582616-Humans,
pubmed-meshheading:582616-Male,
pubmed-meshheading:582616-Milk,
pubmed-meshheading:582616-Oxygen Consumption,
pubmed-meshheading:582616-Physical Endurance,
pubmed-meshheading:582616-Physical Exertion
|
pubmed:year |
1979
|
pubmed:articleTitle |
Effects of preexercise feedings on endurance performance.
|
pubmed:publicationType |
Journal Article
|