McCargar L, Taunton J, Birmingham C L, Paré S, Simmons D
School of Family and Nutritional Sciences, University of British Columbia, Vancouver, Canada.
J Am Diet Assoc. 1993 Sep;93(9):1025-30. doi: 10.1016/0002-8223(93)92042-v.
Women who diet to lose weight often regain the weight over time, and the cycle repeats itself. The objective of this study was to identify a group of female weight cyclers and to match them with a control group who had never consciously tried to lose weight. For 1 year, weight patterns, eating habits, metabolic parameters, and body composition were assessed to determine whether there was a relationship between weight cycling and these variables.
Measurements were done at baseline and at 6 and 12 months. Changes in weight, diet, and exercise were monitored throughout the year.
All testing was done at a university physiology laboratory.
SUBJECTS/SAMPLES: Nine weight cyclers with a notable history of dieting and food restriction were recruited. Subsequently, nine control subjects were selected and matched for age, height, weight, lean body mass, and exercise habits.
The observational study included measures of 3-day diet records, skinfold and girth, serum glucose, insulin and triiodothyronine, and resting energy expenditure.
The main variables were analyzed using a 2 x 3 (diet group x time) analysis of variance with repeated measures on the time factor. Comparison of the means was done by Tukey post hoc test.
A 7-point satisfaction scale indicated that the weight cyclers were dissatisfied with their weight compared with the noncyclers (P = .03). Otherwise, there were no differences between groups in dietary intakes or the physiologic variables.
APPLICATIONS/CONCLUSIONS: In the parameters measured, a history of weight cycling did not affect the metabolic profiles of the weight cyclers compared with the noncyclers.
通过节食减肥的女性往往会随着时间推移体重反弹，如此循环往复。本研究的目的是识别出一组女性体重循环者，并将她们与从未有意识尝试减肥的对照组进行匹配。在一年时间里，对体重模式、饮食习惯、代谢参数和身体成分进行评估，以确定体重循环与这些变量之间是否存在关联。
在基线、6个月和12个月时进行测量。全年监测体重、饮食和运动的变化。
所有测试均在大学的生理学实验室进行。
受试者/样本：招募了9名有显著节食和食物限制史的体重循环者。随后，选择了9名对照受试者，并在年龄、身高、体重、瘦体重和运动习惯方面进行匹配。
该观察性研究包括3天饮食记录、皮褶厚度和腰围、血清葡萄糖、胰岛素和三碘甲状腺原氨酸以及静息能量消耗的测量。
主要变量采用2×3（饮食组×时间）方差分析，并对时间因素进行重复测量。均值比较采用Tukey事后检验。
一个7分满意度量表显示，与非体重循环者相比，体重循环者对自己的体重不满意（P = 0.03）。除此之外，两组在饮食摄入量或生理变量方面没有差异。
应用/结论：在所测量的参数中，与非体重循环者相比，体重循环史并未影响体重循环者的代谢特征。
