Abstract:
:Exercise-induced arterial hypoxemia (EIAH) is a recognized phenomenon in highly trained adults. Like adult athletes, prepubescent trained children may develop high-level metabolic demand but with a limited lung capacity in comparison with adults. The purpose of this investigation was to search for evidence of EIAH in prepubescent trained children. Twenty-four prepubescent (age: 10.3 +/- 0.2 y) trained children (10.0 +/- 0.7 h of weekly physical activity) performed pulmonary function tests and a graded maximal exercise test on a cycle ergometer. EIAH was defined as a drop of at least 4% from resting level arterial oxygen saturation (Sao(2)) measured by pulse oximetry. EIAH was observed in seven children. Forced vital capacity (FVC), ventilatory response to exercise (Delta(E)/Deltaco(2)), and breathing reserve at maximal exercise were significantly lower, whereas tidal volume relative to FVC was higher in hypoxemic children than in nonhypoxemic children; weekly physical activity and maximal oxygen uptake were similar. Moreover, positive relationships were found between Sao(2) at maximal exercise and breathing reserve (r = 0.56; p < 0.05) or volume relative to FVC (r = 0.70; p < 0.01). EIAH may occur in prepubescent trained children with a relatively low maximal oxygen uptake (42 mL. min(-1). kg(-1)); however, the mechanisms remain unclear and need to be investigated more accurately.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Nourry C,Fabre C,Bart F,Grosbois JM,Berthoin S,Mucci Pdoi
10.1203/01.PDR.0000114481.58902.FBsubject
Has Abstractpub_date
2004-04-01 00:00:00pages
674-81issue
4eissn
0031-3998issn
1530-0447pii
01.PDR.0000114481.58902.FBjournal_volume
55pub_type
杂志文章abstract::Blue and white phototherapy was given to infant (and weanling) homozygous Gunn rats treated with different doses of riboflavin-5-phosphate (ribofl.5'p.) During the first hours after a flavin-injection, the effect of phototherapy with both types of fluorescent lamps was enhanced. With equal radiant power applied, the s...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197912000-00001
更新日期:1979-12-01 00:00:00
abstract::Prenatal exposure to infection and subsequent inflammatory responses have been implicated in the etiology of schizophrenia and autism. In this review, we summarize current evidence from human and animal studies supporting the hypothesis that the pathogenesis of these two disorders is linked via exposure to inflammatio...
journal_title:Pediatric research
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更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:To minimize secondary lung injury, ventilated preterm infants are extubated as soon as possible. To maximize extubation success, they are often placed in prone position. The effect of extubation and subsequent prone positioning on lung volumes is currently unknown. METHODS:Changes in end-expiratory lung vol...
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pub_type: 临床试验,杂志文章
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journal_title:Pediatric research
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doi:10.1203/00006450-199604000-00015
更新日期:1996-04-01 00:00:00
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journal_title:Pediatric research
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doi:10.1203/00006450-199902000-00018
更新日期:1999-02-01 00:00:00
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doi:10.1203/00006450-197908000-00007
更新日期:1979-08-01 00:00:00
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abstract::Allergies are increasing, and despite deeper insights into the immunologic basis of these diseases, preventive measures are not yet efficient. As the induction of allergic diseases is often triggered in early childhood, perinatal or prenatal preventive strategies would be beneficial. We investigated the transfer of in...
journal_title:Pediatric research
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doi:10.1203/00006450-200009000-00024
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pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2013-04-01 00:00:00
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journal_title:Pediatric research
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doi:10.1203/00006450-198910000-00019
更新日期:1989-10-01 00:00:00
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doi:10.1203/00006450-199804000-00016
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更新日期:2001-04-01 00:00:00
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journal_title:Pediatric research
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doi:
更新日期:1984-01-01 00:00:00
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更新日期:2006-02-01 00:00:00
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journal_title:Pediatric research
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更新日期:1975-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-03-01 00:00:00
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journal_title:Pediatric research
pub_type: 评论,杂志文章
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更新日期:2000-11-01 00:00:00
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journal_title:Pediatric research
pub_type: 杂志文章,评审
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更新日期:2004-01-01 00:00:00
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journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198910000-00006
更新日期:1989-10-01 00:00:00
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pub_type: 杂志文章
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