Psychobiological impact of a progressive weight loss program in obese men

被引:60
作者
Chaput, JP
Drapeau, V
Hetherington, M
Lemieux, S
Provencher, W
Tremblay, A [1 ]
机构
[1] Univ Laval, Dept Social & Prevent Med, Div Kinesiol, Ste Foy, PQ G1K 7P4, Canada
[2] Univ Liverpool, Sch Psychol, Liverpool, Merseyside, England
[3] Univ Laval, Dept Food Sci & Nutr, Ste Foy, PQ, Canada
关键词
obesity; mental health; psychological health; SF-36 health survey; TFEQ; BDI; PSQI;
D O I
10.1016/j.physbeh.2005.07.014
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Psychobiological effects associated with a progressive body weight loss may help to improve the understanding of psychological barriers to weight loss. We hypothesized that a moderate body weight loss (about 10% of initial body weight) is accompanied with some negative psychological impact. Four questionnaires [SF-36 Health Survey, Three-Factor Eating Questionnaire (TFEQ), Beck Depression Inventory (BDI) and Pittsburgh Sleep Quality Index (PSQI)] were administered at each phase of a body weight loss program that consisted of a supervised diet and exercise clinical intervention to 11 obese men (mean BMI=33.4 kg/m(2), mean age=38 yr). The three phases investigated were: 1) at the beginning of the intervention (baseline); 2) after 5 1 kg body weight loss (Phase I); and 3) after 10 +/- 1 kg body weight loss (Phase 2). Using the SF-36 Health Survey, physical and mental health were shown to be significantly improved at Phase 1 (p < 0.05). The TFEQ showed that cognitive dietary restraint increased (p < 0.001), and both disinhibition (p < 0.05) and susceptibility to hunger (p < 0.05) were significantly reduced at both Phase I and 2 compared to baseline. Depression as measured by the BDI significantly increased at Phase 2 (p < 0.05) compared to baseline and Phase 1. However, the mean BDI scores observed remained below the cut-off point for likely clinical significance. Finally, the PSQI showed that sleep quality was significantly improved at Phase 1 compared to baseline (p < 0.01). Altogether, these results suggest that a substantial improvement in the psychobiological profile occurs with a 5-kg weight loss (Phase 1) but that with additional weight loss (Phase 2) a small, but significant increase in depression occurred and seems to be associated with the increase in rigid restraint of eating. However, prospective studies with a larger sample are needed to confirm and deepen these results. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:224 / 232
页数:9
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