Queensland University of Technology, Institute of Health and Biomedical Innovation and School of Exercise and Nutrition Sciences, 60 Musk Avenue Kelvin Grove, 4059 Brisbane, QLD, Australia; The Rowett Institute, University of Aberdeen, AB25 2ZD Aberdeen, UK.
School of Health Sciences, University of Tasmania, Newnham, TAS 7248, Australia.
Physiol Behav. 2019 Feb 1;199:219-228. doi: 10.1016/j.physbeh.2018.11.015. Epub 2018 Nov 14.
Ratings of subjective appetite and food hedonics provide valuable information about energy and macronutrient intake. Ensuring reproducibility of measures of subjective appetite, and food liking and wanting is essential for accurate understanding about their implementation in intervention studies.
Nineteen participants participated in two separate 10-h test days consisting of 6 test meals. Subjective appetite was measured in the fasted state and periodically across the test day in a postprandial state. Liking and wanting were measured using the Leeds Food Preferences Questionnaire (LFPQ) immediately before and after breakfast, immediately before the second meal, and at the end of the test day.
Reproducibility of appetite scores was similar to those previously reported in males, however females tended to have consistently higher CVs, wider CRs and wider 95% CIs. Variability in food hedonics was of a similar magnitude to subjective appetite with CVs for fasting explicit liking and wanting between 15.3 and 33.4%, correlations for both implicit and explicit liking and wanting between 0.18 and 0.87 and CRs indicating 95% of between-day changes for any given individual should fall within ±43.4 mm of the mean change. Averages of food hedonics during the test day reduced CVs, improved correlations and reduced CRs. Despite no mean change in preceding energy and nutrient intake, individual changes in prior energy and macronutrient intake appeared to influence individual between-day changes in appetite and food hedonics, and appetite and food hedonics were intricately linked.
Larger subject numbers may be required for appetite studies with female participants due to greater appetite variability. The LFPQ as a tool for measuring implicit and explicit liking and wanting is sufficiently reproducible and improved by averaging multiple measures across a day.
主观食欲和食物喜好评分提供了有关能量和宏量营养素摄入的有价值信息。确保主观食欲、食物喜好和食欲的测量具有可重复性，对于准确理解它们在干预研究中的应用至关重要。
19 名参与者参加了两个单独的 10 小时测试日，包括 6 次测试餐。在空腹状态和餐后定期测量主观食欲。在早餐前、第二餐前和测试日结束时，使用利兹食物偏好问卷（LFPQ）立即测量喜好和欲望。
食欲评分的可重复性与之前在男性中报道的相似，然而女性的 CV 通常更高，CR 更宽，95%CI 更宽。食物喜好的变异性与主观食欲相似，禁食时显式喜好和欲望的 CV 为 15.3%至 33.4%，隐式和显式喜好和欲望之间的相关性为 0.18 至 0.87，CR 表明任何给定个体的 95%的日内变化应落在平均变化的±43.4mm 内。测试日期间食物喜好的平均值降低了 CV，提高了相关性，并降低了 CR。尽管先前的能量和营养素摄入没有平均变化，但个体在先前能量和宏量营养素摄入方面的变化似乎会影响个体在日间的食欲和食物喜好变化，并且食欲和食物喜好之间存在错综复杂的联系。
由于食欲变异性更大，可能需要更多的女性参与者来进行食欲研究。LFPQ 作为一种测量隐式和显式喜好和欲望的工具，具有足够的可重复性，并通过在一天内平均多次测量来提高。
