Sensitivity of ad libitum meals to detect changes in hunger. Restricted-item or multi-item testmeals in the design of preload appetite studies

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• 作者：Katy R. Wiessing^a ; Liping Xin^a ; Anne-Thea McGill^a ; ^b ; Stephanie C. Budgett^c ; Caroline M. Strik^a ; Sally D. Poppitt^a ; ^d ; ^e ; ^{s.poppitt@auckland.ac.nz}
• 关键词：Appetite ; Preload ; Single item ; Multi item ; Variety ; Ad libitum testmeal ; Compensation
• 刊名：Appetite (APPET)
• 出版年：2012
• 期刊代码：109_01956663
• 类别：abs
• 出版时间：June, 2012
• 卷：58
• 期：3
• 页码：1076-1082
• 文件大小：646 K

摘要

The aims of the study were to determine whether restricted single-item or multi-item testmeals are better able to detect prior changes in hunger and fullness when assessing ad libitum eating behaviour. Thirty male participants were given a low- (L_E, 0.5 MJ) or high-energy (H_E, 4.0 MJ) breakfast preload designed to induce or suppress hunger, followed 3 h later by a restricted-item (R_I) or multi-item (M_I) testmeal. The R_I testmeal comprised pasta + meat sauce, whilst the M_I testmeal comprised pasta + meat sauce plus bread, chicken, ham, cheese, salad, cake and fruit. The four conditions were (i) L_E/R_I; (ii) L_E/M_I; (iii) H_E/R_I; (iv) H_E/M_I. Visual analogue scales (VAS) were used to rate appetite sensations and EI was measured at the lunch testmeal. As expected, increasing the energy content of the preload significantly altered VAS ratings and decreased EI at the testmeal. Following both L_E and H_E breakfasts, EI was lower at the R_I (L_E = 4566 kJ, H_E = 3583 kJ) compared with the M_I (L_E = 6142 kJ, H_E = 5149 kJ) testmeal. However, the compensatory decrease in EI in response to the H_E breakfast was not significantly greater at the R_I testmeal (R_I: 鈭?83 kJ, 28.1%compensation; M_I: 鈭?93 kJ, 28.4%compensation). In preload studies measuring EI, increasing the variety of an ad lib testmeal may not decrease the sensitivity to detect changes in hunger and fullness.