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Porto, Portugal | September 20-22, 2012
35
ing age and BMI who did not suffer from NES or any other
psychopathological disorder (control group) using a food diary
for a week’s duration, and answer questionnaires.
Results:
The total caloric intake by NES sufferers was significantly
higher than controls. Energy consumption after the evening
meal increased, and the relative amount of carbohydrates
was higher, in the study group compared to the controls. The
level of depression and anxiety were higher among NES
sufferers compared to the controls, with a positive correlation
between level of depression and level of energy consumption.
Conclusions:
This research strengthens the current existing
knowledge about NES and adds a new level of understand-
ing about the syndrome, and its nutritional, emotional and
behavioral characteristics. The practical consequences of the
research are very meaningful for dieticians.
T38
INVESTIGATION OF VISUAL PERCEPTUAL DEFICITS IN
ANOREXIA NERVOSA AND BODY DYSMORPHIC DISOR-
DER USING EEG
Wei Li, Cara Bohon, Michael Strober, Jimmy Lai, Sandra Loo,
Jamie Feusner
University California Los Angeles , Los Angeles, CA, USA
Introduction: Perceptual distortion of appearance is a clinical
phenotype shared by Anorexia Nervosa (AN) and Body Dys-
morphic Disorder (BDD). fMRI studies in AN have found ab-
normal activity when visually processing body images, while
studies using face and object stimuli found visual system
abnormalities in BDD. Electroencephalography (EEG) and
visual event related potentials allow characterization of early
visual system neuronal dynamics, not possible with fMRI.
The
goal of this study is to investigate electrophysiological
responses to appearance- and non-appearance-related
visual stimuli in AN and BDD.
Methods: Six controls, 4 BDD
and 4 AN subjects have enrolled thus far; we expect 20 in
each group. Subjects completed face- and house-matching
tasks consisting of high (HSF), normal (NSF) and low (LSF)
spatial frequency images. Electrodes in bilateral occipital-tem-
poral groups were averaged to obtain P1 and N170 peak
amplitude and latency. Preliminary Results: AN and BDD
groups show decreased P100 amplitudes for all face types
and delayed N170 latencies for NSF and HSF faces, relative
to controls. The AN group shows reduced N170 amplitudes
for all stimuli. Conclusions: Decreased P100 amplitudes and
delayed N170 latencies suggest abnormal holistic processing
and slower detailed processing, respectively, in AN and BDD.
These results may reflect similar pathophysiology of visual
processing that contributes to distorted perception of appear-
ance in these related body image disorders.
T39
CHILD EATING BEHAVIORS AS PREDICTORS OF EATING
IN THE ABSENCE OF HUNGER IN OVERWEIGHT CHIL-
DREN
June Liang
1
, Carol B. Peterson
2
, Sarah Rydell
2
, Nancy Zuck-
er
3
, Kerri N. Boutelle
1
1
University of California, San Diego, San Diego, CA, USA,
2
University of Minnesota, Minneapolis, MN, USA,
3
Duke Uni-
versity, Durham, NC, USA
Purpose: Eating in the absence of hunger (EAH) is a behav-
ioral phenotype that is associated with disinhibited eating and
may play an etiological role in childhood obesity. This study
aimed to assess the extent to which specific child eating
behaviors are associated with EAH in overweight children. It
was expected that food responsiveness, enjoyment of food,
and emotional overeating would predict higher EAH, whereas
satiety responsiveness and slowness in eating would pre-
dict lower EAH. Methods: Data were obtained at the base-
line assessment of 117 treatment-seeking overweight and
obese (BMI > 85
th
%ile) 8-12 year old children (53% female).
Children completed the EAH free access paradigm (in which
they were given access to snack foods after a standardized
dinner) and the Child Eating Behavior Questionnaire. Data
and Results: Correlations between child age, gender, race,
BMI, calories consumed at dinner, and EAH revealed that
child gender and dinner calories were significantly associated
with EAH, with girls showing higher EAH than boys (p<.05).
Regression analysis indicated that none of the child feeding
behaviors significantly predicted EAH. When males and fe-
males were analyzed separately, slowness in eating predicted
lower EAH in boys only (β=-.42, p<.01). Conclusions: Higher
levels of EAH were observed in females than males. Results
are consistent with previous research suggesting that eating
more slowly may reduce food intake; however, this effect may
only be present in boys.
T41
REPRODUCTIVE HEALTH OUTCOMES IN EATING DISOR-
DERS
Milla S Linna
1
, Anu Raevuori
1,2
, Jaana Suokas
3,4
, Jari Hauk-
ka
1,4
, Jaana Suvisaari
4,5
, Mika Gissler
6,7
1
Hjelt Institute, University of Helsinki, Helsinki, Finland,
2
Department of Adolescent Psychiatry, Helsinki University
Central Hospital, Helsinki, Finland,
3
Department of Psychi-
atry, Helsinki University Central Hospital, Helsinki, Finland,
4
Department of Mental Health and Substance Abuse Services,
National Institute for Health and Welfare, Helsinki, Finland,
5
Department of Social Psychiatry, Tampere School of Public
Health, Tampere, Finland,
6
National Institute for Health and
Welfare, Helsinki, Finland,
7
Nordic School of Public Health,
Gothenburg, Sweden
Introduction
Lifetime eating disorders are associated with
fertility problems, unplanned pregnancies, and increased
number of both induced abortions and miscarriages. Findings
of the previous studies are often compromised by sample
size, self-report or retrospective measures. Our aim was
to overcome these limitations by examining register-based
pregnancy outcomes and reproductive health outcomes in
a large patient population.
Methods
Female (N=2 257) and
male (N=100) patients treated at the Eating Disorder Clinic of
Helsinki University Central Hospital 1994-2010 were com-
pared with matched controls (N=9 428). Patients had been
diagnosed (ICD-10) to have anorexia nervosa (AN), atypical
AN, bulimia nervosa (BN), atypical BN, or binge eating disor-
der (BED, according to DSM-IV research criteria). Number of
children, pregnancies, childbirths, induced abortions, miscar-
riages, and infertility treatments were studied.
Results
Preg-
nancy and childbirth rates were lower among female patients
than among controls. Induced abortion as the outcome of a
pregnancy was most common in women with lifetime BN (OR,
1.85; 95% CI, 1.43-2.38), whereas miscarriages were most
common in women with lifetime BED (OR, 3.18; 95% CI, 1.52-
6.66, in patients 46.7% of pregnancies
vs.
23.0% in controls).
Conclusion
Reproductive health outcomes are compromised
in patients across all eating disorder types. Recognition and
treatment of BED are of high importance due to the associat-
ed high risk of miscarriage.
T42
THE ROLE OF REWARD AND PUNISHMENT SENSITIVITY
IN ADOLESCENTS’ EATING BEHAVIOUR AND WEIGHT
Annelies Matton, Caroline Braet, Lien Goossens
Ghent University, Ghent, Belgium
The first author is research assistant at the Research Foun-
dation Flanders
ABSTRACT
Introduction
In how far are neu-
robiological processes involved in food selection? Reinforce-
ment Sensitivity Theory predicts that people have inherent
approach and avoidance systems, reflected by Reward and
Punishment Sensitivity (RS & PS). We aim to differentiate
eating patterns based on different RSxPS clusters.
Methods
350 adolescents (14-18 years) completed the Sensitivity
to Punishment and Sensitivity to Reward Questionnaire
(SPSRQ; Torrubia et al., 2001), as well as the Dutch Eating
Behaviour Questionnaire (DEBQ; van Strien et al., 1986) and
the Dutch Child Eating Disorder Examination Questionnaire
(ChEDE-Q; Decaluwé & Braet, 1999).
Preliminary results
Five clusters were retained from hierarchical clusteranalysis:
mean PS x mean RS (MM), high PS x high RS (HH), low PS
x low RS (LL), high PS x low RS (HL) and low PS x high RS
(LH). Significant gender differences were found between the
clusters. Clusters were also significant for external eating
(highest in HH and LH), restraint eating, emotional eating,
POSTER SESSION 1 ABSTRACTS