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BMI, body composition, and the energy requirement for body weight gain in patients with anorexia nervosa
Author(s) -
Yamashita Sakino,
Kawai Keisuke,
Yamanaka Takeharu,
Inoo Takehiro,
Yokoyama Hiroaki,
Morita Chihiro,
Takii Masato,
Kubo Chiharu
Publication year - 2010
Publication title -
international journal of eating disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.785
H-Index - 138
eISSN - 1098-108X
pISSN - 0276-3478
DOI - 10.1002/eat.20700
Subject(s) - anorexia nervosa , weight gain , body mass index , body weight , medicine , composition (language) , fat mass , dual energy , anorexia , energy requirement , endocrinology , psychology , eating disorders , psychiatry , bone mineral , linguistics , philosophy , osteoporosis , regression , psychoanalysis
Objective Theories abound about the energy requirements for body weight gain in anorexia nervosa (AN). We hypothesized that malnutrition status affects the energy requirements. Method On admission, 97 AN patients were measured for body composition by dual‐energy X‐ray absorptiometry. The relationship between body mass index (BMI) and body composition was investigated. In addition, 21 patients who completed our treatment program were tested for energy intake and body weight. Results The relationship between BMI and both fat‐free mass and fat mass (FM) on admission was curvilinear. The weight gain per excess energy was greater in the group of patients with FM < 4 kg or BMI < 14 kg/m 2 than in the group with FM ≥ 4 kg or BMI ≥ 14 kg/m 2 ( p = .037, p = .055, respectively). Discussion The energy requirements for weight gain in AN patients are related to the initial FM and BMI. © 2009 by Wiley Periodicals, Inc. Int J Eat Disord 2010