Influence of Cardiac Functional Capacity on Gender Differences in Maximal Oxygen Uptake in Children

Rowland, Thomas W.; Goff, Donna A.; Martel, Leslie; Ferrone, Lisa

doi:10.1378/chest.117.3.629

Cited by 92 publications

(85 citation statements)

References 32 publications

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“…Sundergård´s and Bratteby´s results are similar to our findings, the slightly different results from Rump et al could be attributed to the fact that they used treadmill testing whereas our study as well as Sundergård´s and Bratteby´s used cycle ergometer protocols. Recent investigations of children with similar age as in our study came to opposite conclusions when allometric scaling was applied (Rowland et al 2000, Eiberg et al 2005b). Rowland et al (2000) found a difference between genders of 6-17% depending on if absolute values or values scaled to body mass or LBM were compared, and the gender differences persisted after allometric scaling.…”

Section: Statistical Analysescontrasting

confidence: 70%

“…Recent investigations of children with similar age as in our study came to opposite conclusions when allometric scaling was applied (Rowland et al 2000, Eiberg et al 2005b). Rowland et al (2000) found a difference between genders of 6-17% depending on if absolute values or values scaled to body mass or LBM were compared, and the gender differences persisted after allometric scaling. The fact that the difference between the genders existed even after allometric scaling was stated, by the authors, to indicate that both body composition and cardiac functional capacity accounted for the difference between boys and girls.…”

Section: Statistical Analysescontrasting

confidence: 70%

“…Previous studies of children at this age using direct measurements of VO 2PEAK have produced somewhat different results. Most previous studies that have evaluated gender differences in aerobic fitness have used anthropometrical methods to assess body composition (Sundergård and Bratteby 1986;Washington et al 1988;Armstrong et al 1995;Rowland et al 2000;Rump et al 2002;Eiberg et al 2005b), which could give less accurate results and dilute existing differences. In addition, many studies have not evaluated the impact of different scaling methods on gender differences of VO 2PEAK .…”

Section: Statistical Analysesmentioning

confidence: 99%

“…Instead, by displaying aerobic fitness per kg of lean body mass (LBM) one would presumably acquire direct information of relationships between aerobic fitness and its determinants. Also, the concept of allometric scaling as a way of acquiring a dimension free entity has in recent years gained attention but previous studies that have applied this technique have come to different conclusions (Armstrong et al 1995;Welsman and Armstrong 2000;Rowland et al 2000;Vinet et al 2003;Eiberg et al 2005b). It is therefore of physiological interest to investigate how different factors, such as physical activity, pulmonary function, left ventricular size, gender, body fat, or lean body mass are associated with aerobic fitness in early childhood.…”

Section: Introductionmentioning

confidence: 99%

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Gender differences and determinants of aerobic fitness in children aged 8–11 years

et al. 2006

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Previous studies of gender differences in maximum oxygen uptake have come to different conclusions. Limited data exists where the determinants of maximum oxygen uptake have been evaluated in a comprehensive manner. Thus, we examined 248 children (140 boys and 108 girls), aged 7.9-11.1 years. Body composition was determined by dual-energy X-ray absorptiometry, measured variables were total body fat (TBF) and lean body mass (LBM).Maximal oxygen uptake (VO 2PEAK ) was measured by indirect calorimetry during a maximal cycle exercise test. Daily physical activity was assessed by accelerometers and duration of vigorous activity per day (VPA) was calculated. Left ventricular inner diastolic diameter (LVDD) was measured by echocardiography. Lung function was evaluated with spirometric testing and whole body pletysmography. Boys had between 8-18% higher values than girls for VO 2PEAK , dependent upon whether VO 2PEAK was expressed in absolute values or scaled to body mass, lean body mass (LBM) or if allometric scaling was used. In multiple regression analysis absolute values of aerobic fitness were independently related to LBM, maximal heart rate (Max HR), gender, LVDD and VPA. Furthermore, when VO 2PEAK was scaled to body mass it was independently related to ln TBF, Max HR, gender, VPA, and LVDD. Lung function had no relation to VO 2PEAK . Our study concludes that body composition is the main predictor for VO 2PEAK , in children aged 8-11 years, whereas VPA or LVDD has only a modest impact. Existing gender differences in VO 2PEAK cannot be explained only by differences in body composition, physical activity or heart size.

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Section: Statistical Analysescontrasting

confidence: 70%

Section: Statistical Analysescontrasting

confidence: 70%

Section: Statistical Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gender differences and determinants of aerobic fitness in children aged 8–11 years

et al. 2006

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“…No que diz respeito à aptidão cardiorrespiratória os meninos apresentaram média significativamente superior às meninas, o que vai ao encontro de resultados de outros estudos (BERGMANN et al (24) ; GAYA et al (26,31) ; GUEDES e GUEDES, (27) ), e do que estudiosos do desempenho físico de crianças e adolescentes sugerem: meninos em todas as idades são superiores as meninas na aptidão cardiorrespiratória, devido principalmente a uma maior economia de corrida (32)(33)(34) . Em relação à composição corporal, as meninas apresentaram valores estatisticamente superiores para ∑ D.C., enquanto os meninos foram significativamente superiores no IMC.…”

Section: -1994 (Third National Health and Nutrition Examination Sunclassified

Perfil lipídico, de aptidão cardiorrespiratória, e de composição corporal de uma amostra de dscolares de 8ª série de Canoas/RS

Bergmann

Halpern

Bergmann

2008

Rev Bras Med Esporte

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Atualmente as doenças cardiovasculares (DC) são as principais causas de morte no mundo, sendo compostas por uma série de fatores de risco que parecem ter sua origem durante os anos da infância e adolescência. Desta forma, diagnósticos precoces dos fatores de risco para DC devem ser realizados com freqüência já na população jovem. Frente a este quadro, o objetivo deste estudo foi descrever o perfil lipídico (PL), de aptidão cardiorrespiratória (ApC), e de composição corporal (CC) de escolares de 13-14 anos, e comparar cada uma das variáveis entre os sexos. Para tanto, foi selecionada de forma não aleatória voluntária uma amostra de 41 escolares (21 meninos e 20 meninas) da 8ª série de uma escola privada de Canoas/RS. O perfil lípidico (triglicerídeos-TRI, colesterol total-CT, HDL e LDL) dos escolares procedeu-se através da técnica padrão em um laboratório de análises clínicas. A ApC foi avaliada a partir do teste de corrida/caminhada de 9 minutos (PROESP-BR, 2002). A CC foi determinada pelo IMC e pelo somatório de dobras cutâneas tricipital e subescapular (∑ D.C.). Para a análise dos dados foi utilizada a estatística descritiva, sendo que para a análise por critérios foram utilizados os critérios sugeridos pelo AHA (NHI PARENT'S GUIDE, 1993), para o PL, e para ApC e CC foram utilizados os critérios sugeridos pelo PROESP-BR (2002). Os resultados apontaram que em termos de análise de tendência central, o PL, a ApC e a CC demonstraram resultados considerados normais. Todavia, quando a análise foi feita a partir dos critérios, foram detectados alguns casos fora da faixa considerada normal para os níveis lipídicos (TRI-4,9%, CT-12,2%, HDL-36,6% e LDL-4,9%), e uma ocorrência bastante elevada fora da faixa recomendada para a ApC (61%) e para a CC (IMC-17,1% e ∑ D.C.-48,8%). Os resultados demonstram ainda haver diferenças entre os sexos nos valores médios de ApC e IMC, a favor dos meninos, e na ∑ D.C. e HDL a favor das meninas. Com relação às distribuições nas faixas recomendadas para cada variável, não houve associações com os sexos. Os resultados obtidos são preocupantes, e demonstram, mesmo em uma amostra pequena, a existência de todos os fatores de risco analisados para DC nos escolares.Palavras-chave: doenças cardiovasculares, fatores de risco, adolescentes. ABSTRACTNowadays cardiovascular diseases (CD) are the main causes of death in the world and consist in a series of risk factors that seem to have their origin during childhood and adolescence. Thus, early diagnostic of CD risk factors should be frequently performed from young population. Therefore, the aim of this study was to describe the lipidic (LP), the cardiorespiratory fitness (CarFit), and the body composition (BC) profile of 13/14 years old students, and compare these variables between sexes. The sample was composed of 41 students (21 boys and 20 girls) 8 th graders of a private school from Canoas city, RS, voluntarily selected in a non-probabilistic way. The LP (triglycerides -TRI; total cholesterol -TC; HDL and LDL) of the students was measured through...

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Effect of Pectus Excavatum Deformity on Cardiorespiratory Fitness in Adolescent Boys

Rowland¹,

Moriarty²,

Banever³

2005

Arch Pediatr Adolesc Med

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Influence of Cardiac Functional Capacity on Gender Differences in Maximal Oxygen Uptake in Children

Cited by 92 publications

References 32 publications

Gender differences and determinants of aerobic fitness in children aged 8–11 years

Gender differences and determinants of aerobic fitness in children aged 8–11 years

Perfil lipídico, de aptidão cardiorrespiratória, e de composição corporal de uma amostra de dscolares de 8ª série de Canoas/RS

Effect of Pectus Excavatum Deformity on Cardiorespiratory Fitness in Adolescent Boys

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