Modified sham feeding of sweet solutions in women with and without bulimia nervosa

PHYSIOLOGY & BEHAVIOR

卷:96

Article

Klein, D. A.^1,2  Schebendach, J. E.²  Brown, A. J.²  Smith, G. R.³  Walsh, B. T.² 

[1] New York State Psychiat Inst & Hosp, Eating Disorders Res Clin, UNIT 98, New York, NY 10032 USA

[2] Columbia Univ, Coll Phys & Surg, Dept Psychiat, New York, NY 10032 USA

[3] New York Presbyterian Hosp, Weill Med Coll, Dept Psychiat, White Plains, NY 10605 USA

关键词: Modified sham feeding;    Bulimia nervosa;    Sip and spit;    Eating disorders;    Orosensory stimuli;    Hedonics;    Sweet solutions;    Aspartame;    Artificial sweetener;   

DOI  :  10.1016/j.physbeh.2008.08.008

来源: Elsevier

【 摘 要 】

Although it is possible that binge eating in humans is due to increased responsiveness of orosensory excitatory controls of eating, there is no direct evidence for this because food ingested during a test meal stimulates both orosensory excitatory and postingestive inhibitory controls. To overcome this problem, we adapted the modified sham feeding technique (MSF) to measure the orosensory excitatory control of intake of a series of sweetened solutions. Previously published data showed the feasibility of a sip-and-spit procedure in nine healthy control women using Solutions flavored with cherry Kool Aid (R) and sweetened with sucrose (0-20%) [1]. The current study extended this technique to measure the intake of artificially sweetened Solutions in women with bulimia nervosa (BN) and in women with no history of eating disorders. Ten healthy women and 11 women with BN were randomly presented with cherry Kool Aid (R) solutions sweetened with five concentrations of aspartame (0, 0.01, 0.03, 0.08 and 0.28%) in a closed opaque container fitted with a straw. They were instructed to sip as much as they wanted of the solution during 1-minute trials and to spit the fluid out into another opaque container. Across all subjects, presence of sweetener increased intake (p<0.001). Women with BN sipped 40.5-53.1% more of all solutions than controls (p=0.03 for total intake across all Solutions). Self-report ratings of liking, wanting and sweetness of solutions did not differ between groups. These results support the feasibility of a MSF procedure using artificially sweetened Solutions, and the hypothesis that the orosensory stimulation of MSF provokes larger intake in women with BN than controls. (C) 2008 Elsevier Inc. All rights reserved.

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