Impairment of cognitive performance associated with dieting and high levels of dietary restraint.
Physiol Behav
; 55(3): 447-52, 1994 Mar.
Article
em En
| MEDLINE
| ID: mdl-8190760
ABSTRACT
Seventy women students were tested on a short battery of tasks assessing cognitive performance. They also completed self-report ratings of mood, the Dutch Eating Behaviour Questionnaire (DEBQ) to which was appended several additional items concerning their recent dieting behaviour, and a 24-h dietary recall. Heart rate was measured before and after testing. Compared with nondieting subjects with low to moderate scores on the restraint factor of the DEBQ, subjects (n = 15) who reported that they were currently dieting to lose weight displayed impaired performance on a vigilance task and also tended to show poorer immediate memory and longer reaction times. Highly restrained eaters who were not dieting at the time of testing, on the whole, performed at an intermediate level on these tests. In contrast, the dieters tended to show the best performance on an undemanding finger tapping task, indicating that they were not slowed in their fine motor responses or lacking in motivation to carry out the tasks. Poorer cognitive functioning during dieting could arise as a direct consequence of the effects of food restriction on energy metabolism or other physiological mechanisms--the dietary records indicated that the current dieters were eating at about 70% of maintenance energy requirement. However, it is also possible that cognitive performance is impaired during dieting due to anxiety resulting from stressful effects of imposing and maintaining dietary restraint.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tempo de Reação
/
Atenção
/
Dieta Redutora
/
Memória de Curto Prazo
/
Destreza Motora
Tipo de estudo:
Qualitative_research
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
Idioma:
En
Ano de publicação:
1994
Tipo de documento:
Article