Short-Term Protein Supplementation Does Not Alter Energy Intake, Macronutrient Intake and Appetite in 50-75 Year Old Adults.
Short-Term Protein Supplementation Does Not Alter Energy Intake, Macronutrient Intake and Appetite in 50-75 Year Old Adults.
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DOI：
10.3390/nu13051711
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发表时间：
2021-05-18
期刊：
影响因子：
5.9
通讯作者：
Williams EA
中科院分区：
文献类型：
--
作者：
Tuttiett ER;Green DJ;Stevenson EJ;Hill TR;Corfe BM;Williams EA
衰老与肌肉质量和力量的减少有关，称为肌肉减少症。膳食蛋白质通过促进肌肉蛋白质合成对维持肌肉质量很重要。然而，蛋白质也是一种高饱腹感的营养物质。这引起了人们的关注，即老年人因肌肉骨骼健康原因摄入蛋白质可能会加剧与年龄相关的食欲下降，并可能导致能量和营养摄入减少。本研究旨在探讨短期蛋白质补充及其时间（早晨和晚上）对中老年成年人能量和营养摄入以及食欲测量的影响。24名50-75岁的老年人被招募到随机交叉试验中。在第一阶段（补充前），参与者完成了一份食物日记，并隔三天报告饥饿和食欲。在第二和第三阶段，参与者连续四天在早上（早餐后）或晚上（睡觉前）饮用20克乳清蛋白凝胶（78 mL/368 kJ），同时完成与第一阶段相同的评估。在不考虑时间（不包括蛋白质补充本身的贡献）的情况下，将补充前阶段与补充蛋白质阶段进行比较时，没有记录到能量、宏量营养素和微量营养素的膳食摄入量差异。同样，在自我报告的饥饿感和食欲方面也没有观察到差异。综上所述，在用餐时间外每天补充20克乳清蛋白不会在短期内改变这些中老年成年人的习惯性饮食摄入量、饥饿感或食欲。这种方法可能是增加中老年人群习惯性蛋白质摄入量的有用策略。
Ageing is associated with a reduction in muscle mass and strength, termed sarcopenia. Dietary protein is important for the maintenance of muscle mass through the promotion of muscle protein synthesis. However, protein is also reported to be a highly satiating nutrient. This raises concerns that protein intake for musculoskeletal health reasons in older adults may exacerbate age-related decreased appetite and may result in reduced energy and nutrient intake. This study aimed to investigate the effect of short-term protein supplementation and its timing (morning vs. evening), on energy and nutrient intake and appetite measures in middle-older age adults. Twenty-four 50–75 year olds were recruited to a randomised cross-over trial. In phase 1 (pre-supplementation) participants completed a food diary and reported hunger and appetite on three alternate days. During the second and third phases, participants consumed a 20 g whey protein gel (78 mL/368 kJ), for four days, either in the morning (after breakfast) or the evening (before bed), whilst completing the same assessments as phase 1. No differences in dietary intakes of energy, macronutrients and micronutrients were recorded when comparing the pre-supplementation phase to the protein supplementation phases, irrespective of timing (excluding the contribution of the protein supplement itself). Similarly, no differences were observed in self-reported feelings of hunger and appetite. In conclusion, a 20 g/day whey protein supplement given outside of meal-times did not alter habitual dietary intakes, hunger or appetite in this middle-older age adult population in the short-term. This approach may be a useful strategy to increasing habitual protein intake in the middle-older age population.
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影响因子：
4.2
作者：
Buckley, Charlotte M.;Austin, Sophie;Brunstrom, Jeffrey M.
通讯作者：
Brunstrom, Jeffrey M.
影响因子：
5.9
作者：
Morehen, Stephen;Smeuninx, Benoit;Breen, Leigh
通讯作者：
Breen, Leigh
DOI：
10.1177/0884533613507607
发表时间：
2013-12
期刊：
Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition
影响因子：
--
作者：
Beasley JM;Shikany JM;Thomson CA
通讯作者：
Thomson CA
影响因子：
7.1
作者：
Weigle, DS;Breen, PA;Purnell, JQ
通讯作者：
Purnell, JQ
影响因子：
5.4
作者：
Bollwein J;Diekmann R;Kaiser MJ;Bauer JM;Uter W;Sieber CC;Volkert D
通讯作者：
Volkert D