| Revista: | Acta comportamentalia |
| Base de datos: | |
| Número de sistema: | 000574654 |
| ISSN: | 0188-8145 |
| Autores: | Leite, Emerson Ferreira da Costa1 Terhoch, Gabriel Bueno Almeida, Paola Esposito de Moraes1 |
| Instituciones: | 1Pontifícia Universidade Católica de São Paulo, São Paulo. Brasil |
| Año: | 2022 |
| Volumen: | 30 |
| Número: | 4 |
| País: | México |
| Idioma: | Español |
| Tipo de documento: | Artículo |
| Resumen en inglés | Different experimental models investigate the determinants environmental variables of eating patterns, including binge eating. In the present study, the effects of a history of food restriction with intermittent access to palatable food (in unlimited quantity) on body weight and consumption of regular and palatable food in rats were evaluated. Daily consumption on the five days of the week and the average consumption of each subject on weekends was analyzed in baseline (LB) and for 12 weekly cycles involving 4 days of restriction or not of regular food and 3 days of ad lib access to regular or regular and palatable food (refeeding). The restriction was 75% in cycles 1 to 6 and 50% in cycles 7 to 12. The 12 subjects were exposed to one of four possible conditions: (a) restriction with access to palatable food (Rest/Palat); (b) restriction with access to regular food only (Rest/Reg); (c) no restriction with access to palatable food (NRest/Palat) and (d) no restriction with access to regular food only (NRest/Reg). Restriction was based on the consumption of the control subject paired to subject in restriction chosen for showing similar consumption in LB. At the end of the cycles, a period of 30 days in the same conditions of LB followed and then three consumption tests, involving 24-hour deprivation (Tests 1 and 2) or absence of deprivation (Test 3) and access to only regular food (Test 1) or regular and palatable (Tests 2 and 3). Taken together, the data showed that a history of restriction increased subsequent food consumption, especially when the refeeding involved palatable food. On the other hand, intermittent access to palatable food produced a progressive reduction in the consumption of regular food, immediately for NRest/Palat and later for Rest/Palat, after its increase. In general, tests showed greater consumption by the Rest/Palat, even after normalization of the diet, which attests the importance of these variables in the production and maintenance of binge eating. |
| Resumen en español | Diferentes modelos experimentais investigam o papel de variáveis ambientais na determinação de padrões alimentares, dentre eles o binge eating. No presente estudo, avaliou-se os efeitos de uma história de restrição alimentar com acesso intermitente a alimento palatável sobre o peso e consumo alimentar em ratas expostas, durante 12 ciclos, a uma de quatro condições: (a) restrição com acesso intermitente a alimento palatável; (b) restrição com acesso apenas a alimento regular; (c) sem restrição e acesso intermitente a palatável e (d) sem restrição e acesso apenas a alimento regular. Encerrados os ciclos, seguiram-se 30 dias de normalização da dieta e, então, três testes de consumo, envolvendo privação de 24h (Testes 1 e 2) ou ausência de privação (Teste 3), com acesso somente a alimento regular (Teste 1) ou regular e palatável (Testes 2 e 3). Ao longo do estudo, sujeitos com história de acesso ao palatável reduziram o consumo de alimento regular, especialmente na ausência de restrição. Sujeitos expostos à restrição e acesso ao alimento palatável apresentaram o maior aumento no peso e consumo, mesmo após a normalização da dieta, atestando a importância dessas variáveis na produção e manutenção do binge eating. |
| Disciplinas: | Psicología |
| Palabras clave: | restrição alimentar, alimento palatável, comer excessivo, compulsão alimentar, modelos experimentais de psicopatologias, Análise do Comportamento, Psicología experimental |
| Keyword: | food restriction, palatable food, overeating, binge eating, experimental models of psychopathologies, Behavior Analysis, Experimental psychology |
| Texto completo: | Texto completo (Ver PDF) |
