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首页> 外文期刊>Psychosomatic Medicine: Journal of the American Psychosomatic Society >Low calorie dieting increases cortisol.
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Low calorie dieting increases cortisol.

机译：低热量饮食会增加皮质醇。

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OBJECTIVE: To test the hypothesis that dieting, or the restriction of caloric intake, is ineffective because it increases chronic psychological stress and cortisol production--two factors that are known to cause weight gain; and to examine the respective roles of the two main behaviors that comprise dieting--monitoring one's caloric intake and restricting one's caloric intake--on psychological and biological stress indicators. METHODS: In a 2 (monitoring vs. not) x 2 (restricting vs. not) fully crossed, controlled experiment, 121 female participants were assigned randomly to one of four dietary interventions for 3 weeks. The monitoring + restricting condition tracked their caloric intake and restricted their caloric intake (1200 kcal/day); the monitoring only condition tracked their caloric intake but ate normally; the restricting only condition was provided 1200 kcal/day of food but did not track their calories, and the control group ate normally and did not track their intake. Before and after the interventions, participants completed measures of perceived stress and 2 days of diurnal saliva sampling to test for cortisol. RESULTS: Restricting calories increased the total output of cortisol, and monitoring calories increased perceived stress. CONCLUSIONS: Dieting may be deleterious to psychological well-being and biological functioning, and changes in clinical recommendations may be in order.
机译：目的：为了检验这样的假设，即节食或限制热量摄入是无效的，因为这会增加慢性心理压力和皮质醇的产生，这是众所周知的导致体重增加的两个因素。并研究了两种主要行为的各自作用，这些行为包括节食（监控一个人的卡路里摄入量和限制一个人的卡路里摄入量）对心理和生物压力指标的作用。方法：在2（监测与否）x 2（限制性与非限制性）完全交叉对照实验中，将121名女性参与者随机分配到四种饮食干预措施之一，持续3周。监测和限制条件跟踪其热量摄入并限制其热量摄入（1200大卡/天）;仅监测病情跟踪其热量摄入，但正常饮食;限制条件是每天提供1200 kcal的食物，但没有追踪他们的卡路里，对照组正常进食并且没有追踪他们的摄入量。干预前后，参与者完成了感知压力的测量和每天两天的唾液采样以测试皮质醇。结果：限制卡路里增加了皮质醇的总输出，而监测卡路里则增加了感知压力。结论：节食可能对心理健康和生物学功能有害，因此临床建议可能会发生变化。

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