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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1988-3-7
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pubmed:abstractText |
Iron-deficiency anemia impairs exercise capacity, but whether nonanemic iron depletion decreases endurance performance is unclear. In 14 iron-deficient (serum ferritin level, less than 20 micrograms/L [less than 20 ng/L])nonanemic runners, hematologic and treadmill running values were followed up during a competitive season. Following a four-week control period, runners were treated for one month in a double-blind protocol with ferrous sulfate (975 mg/d) or placebo. During treatment, the mean ferritin level rose from 8.7 to 26.6 micrograms/L (8.7 to 26.6 ng/mL) in those patients taking iron and fell from 10.6 to 8.6 micrograms/L (10.7 to 8.6 ng/mL) in the placebo group. Treadmill endurance times improved significantly in the iron-treated runners compared with controls. Endurance time declined in all seven controls (range, 0.07 to 1.30 minutes), while six of seven iron-treated subjects improved their performance (range, 0.03 to 1.92 minutes). No significant differences in maximal or submaximal oxygen consumption, ventilation, or heart rate were observed between the groups except for a 4% increase in maximum oxygen consumption during placebo treatment. These data indicate that nonanemic iron deficiency impairs exercise performance but does not influence gas exchange or cardiac measures.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Delayed-Action Preparations,
http://linkedlifedata.com/resource/pubmed/chemical/Ferritins,
http://linkedlifedata.com/resource/pubmed/chemical/Ferrous Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/Iron,
http://linkedlifedata.com/resource/pubmed/chemical/ferrous sulfate
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0002-922X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
142
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
165-9
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:3341317-Adolescent,
pubmed-meshheading:3341317-Delayed-Action Preparations,
pubmed-meshheading:3341317-Double-Blind Method,
pubmed-meshheading:3341317-Female,
pubmed-meshheading:3341317-Ferritins,
pubmed-meshheading:3341317-Ferrous Compounds,
pubmed-meshheading:3341317-Heart Rate,
pubmed-meshheading:3341317-Humans,
pubmed-meshheading:3341317-Iron,
pubmed-meshheading:3341317-Physical Endurance,
pubmed-meshheading:3341317-Physical Exertion,
pubmed-meshheading:3341317-Pulmonary Gas Exchange,
pubmed-meshheading:3341317-Running,
pubmed-meshheading:3341317-Time Factors
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pubmed:year |
1988
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pubmed:articleTitle |
The effect of iron therapy on the exercise capacity of nonanemic iron-deficient adolescent runners.
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pubmed:affiliation |
Department of Pediatrics, Baystate Medical Center, Springfield, MA 01199.
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pubmed:publicationType |
Journal Article,
Clinical Trial,
Controlled Clinical Trial,
Research Support, Non-U.S. Gov't
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