The scaling of human basal and resting metabolic rates
| Autor: | Catriona A. Burdon, Nigel A.S. Taylor, Heather M. Bowes |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Fysiologi Supine position Adolescent Physiology Oxygen consumption Metabolic rate Biology Scaling Body Temperature Basal metabolic rate 03 medical and health sciences Basal (phylogenetics) Respirometry 0302 clinical medicine Size Physiology (medical) Linear regression Supine Position Humans Orthopedics and Sports Medicine Exercise Sport and Fitness Sciences Allometry Idrottsvetenskap Body Weight Public Health Environmental and Occupational Health 030229 sport sciences General Medicine Reference Standards Regression Body mass Biological Variation Population Data Interpretation Statistical Basal Metabolism 030217 neurology & neurosurgery |
| Zdroj: | European journal of applied physiology. 121(1) |
| ISSN: | 1439-6327 |
| Popis: | PURPOSE: In tachymetabolic species, metabolic rate increases disproportionately with body mass, and that inter-specific relationship is typically modelled allometrically. However, intra-specific analyses are less common, particularly for healthy humans, so the possibility that human metabolism would also scale allometrically was investigated. METHODS: Basal metabolic rate was determined (respirometry) for 68 males (18-40 years; 56.0-117.1 kg), recruited across five body-mass classes. Data were collected during supine, normothermic rest from well-rested, well-hydrated and post-absorptive participants. Linear and allometric regressions were applied, and three scaling methods were assessed. Data from an historical database were also analysed (2.7-108.9 kg, 4811 males; 2.0-96.4 kg, 2364 females). RESULTS: Both linear and allometric functions satisfied the statistical requirements, but not the biological pre-requisite of an origin intercept. Mass-independent basal metabolic data beyond the experimental mass range were not achieved using linear regression, which yielded biologically impossible predictions as body mass approached zero. Conversely, allometric regression provided a biologically valid, powerful and statistically significant model: metabolic rate = 0.739 * body mass0.547 (P QC 20210112 |
| Databáze: | OpenAIRE |
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