睡前喝牛奶不会影响轻度超重男性次日的静息代谢率、底物利用率和食欲。

A bedtime milk snack does not impact RMR, substrate utilisation and appetite the following morning in mildly overweight males.

机构信息

1Physiology, Exercise and Nutrition Research Group, Faculty of Health Sciences and Sport,University of Stirling,Stirling FK9 4LA,UK.

2Centre for Health Science,University of the Highlands and Islands,Inverness IV2 3JH,UK.

出版信息

Br J Nutr. 2018 Jun;119(12):1355-1365. doi: 10.1017/S0007114518001058.

DOI:10.1017/S0007114518001058

PMID:29845905

Abstract

Nighttime eating is often associated with a negative impact on weight management and cardiometabolic health. However, data from recent acute metabolic studies have implicated a benefit of ingesting a bedtime snack for weight management. The present study compared the impact of ingesting a milk snack containing either 10 (BS10) or 30 g (BS30) protein with a non-energetic placebo (BS0) 30 min before bedtime on next morning metabolism, appetite and energy intake in mildly overweight males (age: 24·3 (sem 0·8) years; BMI: 27·4 (sem 1·1) kg/m2). Next morning measurements of RMR, appetite and energy intake were measured using indirect calorimetry, visual analogue scales and an ad libitum breakfast, respectively. Bedtime milk ingestion did not alter next morning RMR (BS0: 7822 (sem 276) kJ/d, BS10: 7482 (sem 262) kJ/d, BS30: 7851 (sem 261) kJ/d, P=0·19) or substrate utilisation as measured by RER (P=0·64). Bedtime milk ingestion reduced hunger (P=0·01) and increased fullness (P=0·04) during the evening immediately after snack ingestion, but elicited no effect the next morning. Next morning breakfast (BS0: 2187 (sem 365) kJ, BS10: 2070 (sem 336) kJ, BS30: 2582 (sem 384) kJ, P=0·21) and 24 h post-trial (P=0·95) energy intake was similar between conditions. To conclude, in mildly overweight adults, compared with a non-energetic placebo, a bedtime milk snack containing 10 or 30 g of protein does not confer changes in next morning whole-body metabolism and appetite that may favour weight management.

摘要

夜间进食通常与体重管理和心脏代谢健康的负面影响有关。然而，最近的急性代谢研究数据表明，睡前吃零食有助于体重管理。本研究比较了在睡前 30 分钟内摄入含有 10（BS10）或 30 克（BS30）蛋白质的牛奶零食与非能量安慰剂（BS0）对轻度超重男性（年龄：24.3（sem 0.8）岁；BMI：27.4（sem 1.1）kg/m2）次日清晨代谢、食欲和能量摄入的影响。使用间接测热法、视觉模拟量表和随意早餐分别测量次日清晨的 RMR、食欲和能量摄入。睡前摄入牛奶不会改变次日清晨的 RMR（BS0：7822（sem 276）kJ/d，BS10：7482（sem 262）kJ/d，BS30：7851（sem 261）kJ/d，P=0.19）或 RER 测量的底物利用（P=0.64）。睡前摄入牛奶可减少饥饿感（P=0.01）和增加饱腹感（P=0.04），但在下一次早餐时没有影响。次日清晨的早餐（BS0：2187（sem 365）kJ，BS10：2070（sem 336）kJ，BS30：2582（sem 384）kJ，P=0.21）和 24 小时后（P=0.95）的能量摄入在不同条件下相似。综上所述，与非能量安慰剂相比，在轻度超重成年人中，睡前摄入含有 10 或 30 克蛋白质的牛奶零食不会改变次日清晨的全身代谢和食欲，从而有利于体重管理。