Eating Disorders: Acute Exercise Increases Feeding Latency in Healthy Normal Weight Young Males but Does Not Alter Energy Intake.

Acute exercise increases feeding latency in healthy normal weight young males but does not alter energy intake.

Filed under: Eating Disorders

Appetite. 2012 Nov 5;
King JA, Wasse LK, Stensel DJ

This study investigated the acute influence of exercise on eating behaviour in an ecologically valid setting whereby healthy active males were permitted complete ad libitum access to food. Ten healthy males completed two, eight hour trials (exercise and control) in a randomised-crossover design. In the exercise trials participants consumed a breakfast snack and then rested for one hour before undertaking a 60 min run (72% of Vo(2) max) on a treadmill. Participants then rested in the laboratory for six hours during which time they were permitted complete ad libitum access to a buffet meal. The timing of meals, energy/macronutrient intake and eating frequency were assessed. Identical procedures were completed in the control trial except no exercise was performed. Exercise increased the length of time (35 min) before participants voluntarily requested to eat afterwards. Despite this, energy intake at the first meal consumed, or at subsequent eating episodes, was not influenced by exercise (total trial energy intake: control 7426 kJ, exercise 7418 kJ). Neither was there any difference in macronutrient intake or meal frequency between trials. These results confirm that food intake remains unaffected by exercise in the immediate hours after but suggest that exercise may invoke a delay before food is desired.
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Body-Related Behaviours and Cognitions in the Eating Disorders.

Filed under: Eating Disorders

Behav Cogn Psychother. 2012 Nov 9; 1-9
Amin R, Strauss C, Waller G

Background: Different body-related behaviours and cognitions (checking, avoidance, comparison, display) have been shown to be related to unhealthy eating attitudes in a non-clinical sample. Aims: This study tested whether the use of body-related behaviours is higher in eating-disordered women than in non-clinical women. It also examined whether the use of body-related behaviours is associated with psychological characteristics (particularly anxiety, depression and narcissistic characteristics), controlling for age and eating pathology. Method: Ninety-nine adult women with diagnosed eating disorders (mean age = 30.4 years, SD = 9.44; mean body mass index = 21.9, SD = 6.39) completed standardized measures of eating pathology, anxiety and depression, narcissistic characteristics, and body-related behaviours and cognitions. Results: The Body-Related Behaviours Scale (BRBS) had acceptable levels of internal consistency in this group, and its scales were only weakly to moderately correlated with each other. There were no differences between diagnostic groups, but the clinical group had higher scores that a previous non-clinical sample on three of the scales. The four body-related behaviours had different patterns of association with eating pathology, depression and narcissistic features. However, anxiety was not associated with BRBS scores. Conclusions: The findings support the importance of a wide range of body-related behaviours and cognitions in understanding the eating disorders. However, the lack of an association with anxiety is counter to the suggestion that the various behaviours measured by the BRBS reflect safety behaviours on the part of sufferers. Depression and narcissistic features might be more important in maintaining such behaviours.
HubMed – eating

The 5×1 DAFNE Study Protocol: A cluster randomised trial comparing a standard 5 day DAFNE course delivered over 1 week against DAFNE training delivered over 1 day a week for 5 consecutive weeks.

Filed under: Eating Disorders

BMC Endocr Disord. 2012 Nov 8; 12(1): 28
Elliott J, Lawton J, Rankin D, Emery C, Campbell M, Dixon S, Heller S

ABSTRACT: BACKGROUND: Structured education programmes are now established as an essential component to assist effective self-management of diabetes. In the case of Type 1 diabetes, the Dose Adjustment For Normal Eating (DAFNE) programme improves both glycaemic control and quality of life. Traditionally delivered over five consecutive days, this format has been cited as a barrier to participation by some patients, such as those who work full-time. Some centres in the UK have organised structured education programmes to be delivered one day a week over several consecutive weeks. This type of format may add benefit by allowing more time in which to practice skills between sessions, but may suffer as a result of weaker peer support being generated compared to that formed over five consecutive days.Methods / DesignWe aim to compare DAFNE delivered over five consecutive days (1 week course) with DAFNE delivered one day a week over five weeks (5 week course) in a randomised controlled trial. A total of 213 patients were randomised to attend either a 1 week or a 5 week course delivered in seven participating centres. Study outcomes (measured at baseline, 6 and 12 months post-course) include HbA1c, weight, self-reported rates of severe hypoglycaemia, psychosocial measures of quality of life, and cost-effectiveness. Generalisability was optimised by recruiting patients from DAFNE waiting lists at each centre, and by mailing eligible patients from hospital clinic lists. The inclusion and exclusion criteria were identical to those used to recruit to a standard DAFNE course (e.g., HbA1c <12%, with no lower limit). Qualitative interviews were undertaken with a sub-sample of n=30 patients and their course educators (n=11) to help understand and interpret differences and similarities in outcomes between the two arms, and to identify logistical problems and unanticipated issues arising from the adaptation and delivery of a 5 week course. DISCUSSION: This trial has been designed to test the hypothesis that the benefits of delivering a structured education programme over 5 weeks are comparable to those observed after a 1 week course. The results of the trial and the qualitative sub-study will both inform the design and delivery of future DAFNE courses, and the development of structured education programmes in other fields of medicine.Trial RegistrationClinicaltrials.gov NCT01069393. HubMed – eating

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