Unexpectedly Low Levels of Energy Expenditure in Healthy Women

Prentice, Ann; Davies, H. L.; Black, A.; Ashford, J; Coward, W. A.; Murgatroyd, Peter R.; Goldberg, Gail; Sawyer, M. B.; Whitehead, R. G.

doi:10.1016/s0140-6736(85)91846-x

Cited by 122 publications

(38 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results, like some previously reported (6), do not support a universal recommendation of fixed energy requirements for all individuals.…”

Section: Introductioncontrasting

confidence: 66%

“…For these reasons, there is a need for better methods to assess the daily energy requirements in humans (7). There is no doubt that the study ofenergy balance in humans requires measurement of energy expenditure over periods of at least 24 h. New methods such as the use ofdoubly labeled water (6,27,28) for measurement ofenergy expenditure in free, living subjects may prove very useful in understanding the possible causes of human obesity and in the assessment of energy requirements in humans. As a result ofimprovements in the quality (sensitivity and stability) of oxygen and carbon dioxide analyzers, the classical principle of indirect calorimetry, however, can now be used to determine energy expenditure in comfortable respiratory chambers over a period of 1-7 d (8, 9).…”

Section: Discussionmentioning

confidence: 99%

“…The equation for the VCO2 rate over a period of time is: (6) RQ =VCO2/V02- (7) It is then possible to calculate the energy production rate in a steadystate condition (10) The latter was found to be 18,990±520 liters (mean±SD).…”

Section: Methodsmentioning

confidence: 99%

“…Despite several studies on energy expenditure in humans, it is not yet clearly established how much food humans require for weight maintenance (1)(2)(3)(4)(5)(6). The reason for this lack of information is that most studies on energy expenditure have been performed over short periods of time (minutes or hours) and extrapolation ofthese results to 24 h gives an inaccurate estimate of 24-h energy requirements.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Determinants of 24-hour energy expenditure in man. Methods and results using a respiratory chamber.

Ravussin¹,

Lillioja²,

Anderson³

et al. 1986

J. Clin. Invest.

1,011

673

View full text Add to dashboard Cite

reproducible (coefficient of variation = 2.4%); and (c) even when adjusted for differences in FFM, there is still considerable interperson variability of the daily energy expenditure. A large portion of the variability of 24EE among individuals, independent of differences in body size, was due to variability in the degree of spontaneous physical activity, i.e., "fidgeting," which accounted for 100-800 kcal/d in these subjects.

show abstract

“…These results, like some previously reported (6), do not support a universal recommendation of fixed energy requirements for all individuals.…”

Section: Introductioncontrasting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determinants of 24-hour energy expenditure in man. Methods and results using a respiratory chamber.

Ravussin¹,

Lillioja²,

Anderson³

et al. 1986

J. Clin. Invest.

1,011

673

View full text Add to dashboard Cite

show abstract

“…Muitos estudos de validação usam indicadores bioquímicos e isótopos com o intuito de utilizá-los como "padrão ouro" 35,36 . Pufulete et al 22 , para avaliar a ingestão dietética de ácido fólico, desenvolveram um QFA resumido que foi validado utilizandose medidas de ácido fólico sérico e eritrocitário, e também de registro alimentar de 7 dias por pesadas; Resnicow et al 24 , com o objetivo de avaliar o consumo de frutas e vegetais, comparou 3 diferentes modelos de QFA, R24h e 3 RA com medidas de carotenóides séricos.…”

Section: Consumo De Alimentos Vs Consumo De Nutrientesunclassified

Validação de Questionários de Freqüência Alimentar - QFA: considerações metodológicas

Slater

Philippi

Marchioni

et al. 2003

Rev. bras. epidemiol.

View full text Add to dashboard Cite

ResumoO Questionário de Freqüência Alimentar (QFA) tornou-se o método dominante nos estudos epidemiológicos para avaliação do consumo dietético, em especial para avaliar a relação da dieta com a ocorrência de doenças crônicas não transmissíveis. O QFA é um instrumento que tem como objetivo a avaliação da dieta habitual de grupos populacionais e apresenta como vantagens a rapidez na aplicação e a eficiência na prá-tica epidemiológica para identificar o consumo habitual de alimentos, além do baixo custo. Comparado a outros instrumentos, substitui a medição da ingestão alimentar de um ou vários dias pela informação global da ingestão de um período amplo de tempo. Constitui ferramenta útil nos estudos sempre que seu desenvolvimento tenha sido precedido por procedimentos metodológicos cuidadosamente planejados que garantirão confiabilidade e precisão dos dados. Para tanto, são necessários estudos de validação que permitam estimar os erros de medição próprios do método. Sem o reconhecimento destes erros, a relação dieta-doença poderá estar prejudicada. Este artigo pretende abordar de forma sistemática considerações metodológicas para a realização de estudos de validação de QFA.Palavras-chave: Palavras-chave: Palavras-chave: Palavras-chave: Palavras-chave: Questionários de freqüên-cia alimentar. Estudo de validação. Dieta habitual.

show abstract

Issues in the measurement of energy intake for free-living human populations

Huss‐Ashmore

1996

Am. J. Hum. Biol.

View full text Add to dashboard Cite

Energy intake is the most difficult component of energy balance to measure. All known methods are subject to considerable error, both random error and bias. High variability within and between subjects means that sampling is important to increase reliability. Further, the fact that true intakes are unknown means that some outside measure of validity is desirable as a check on the accuracy of recording of habitual intake. This report examines food intake for populations where expenditure has been measured by doubly labeled water. For 21 populations where aggregate data have been reported, intake came within one megajoule (MJ) of expenditure in about one‐half of the cases. In seven populations where individual intake and expenditure were noted, reported intakes did not differ from measured expenditure for four groups, but differed significantly for two groups of African farm women and one group of obese volunteers. Individuals also differed in ranking of intake and expenditure, with intake able to predict the rank of expenditure only for one group of German students. Energy intake data are important for both ecological and epidemiological studies but are poor measures to use in estimating energy balance. © 1996 Wiley‐Liss, Inc.

show abstract

Unexpectedly Low Levels of Energy Expenditure in Healthy Women

Cited by 122 publications

References 9 publications

Determinants of 24-hour energy expenditure in man. Methods and results using a respiratory chamber.

Determinants of 24-hour energy expenditure in man. Methods and results using a respiratory chamber.

Validação de Questionários de Freqüência Alimentar - QFA: considerações metodológicas

Issues in the measurement of energy intake for free-living human populations

Contact Info

Product

Resources

About