Predicting energy intake in adults who are dieting and exercising.
Int J Obes (Lond)
; 46(12): 2095-2101, 2022 12.
Article
em En
| MEDLINE
| ID: mdl-35987955
ABSTRACT
BACKGROUND:
When a lifestyle intervention combines caloric restriction and increased physical activity energy expenditure (PAEE), there are two components of energy balance, energy intake (EI) and physical activity energy expenditure (PAEE), that are routinely misreported and expensive to measure. Energy balance models have successfully predicted EI if PAEE is known. Estimating EI from an energy balance model when PAEE is not known remains an open question.OBJECTIVE:
The objective was to evaluate the performance of an energy balance differential equation model to predict EI in an intervention that includes both calorie restriction and increases in PAEE.DESIGN:
The Antonetti energy balance model that predicts body weight trajectories during weight loss was solved and inverted to estimate EI during weight loss. Using data from a calorie restriction study that included interventions with and without prescribed PAEE, we tested the validity of the Antonetti weight predictions against measured weight and the Antonetti EI model against measured EI using the intake-balance method at 168 days. We then evaluated the predicted EI from the model against measured EI in a study that prescribed both calorie restriction and increased PAEE.RESULTS:
Compared with measured body weight at 168 days, the mean (±SD) model error was 1.30 ± 3.58 kg. Compared with measured EI at 168 days, the mean EI (±SD) model error in the intervention that prescribed calorie restriction and did not prescribe increased PAEE, was -84.9 ± 227.4 kcal/d. In the intervention that prescribed calorie restriction combined with increased PAEE, the mean (±SD) EI model error was -155.70 ± 205.70 kcal/d.CONCLUSION:
The validity of the newly developed EI model was supported by experimental observations and can be used to determine EI during weight loss.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ingestão de Energia
/
Exercício Físico
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Humans
Idioma:
En
Revista:
Int J Obes (Lond)
Assunto da revista:
METABOLISMO
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Estados Unidos