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Nutrient composition

A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults

Abstract

Objective 

We performed a systematic review, meta-analysis and meta-regression to determine if dietary protein supplementation augments resistance exercise training (RET)-induced gains in muscle mass and strength.

Data sources 

A systematic search of Medline, Embase, CINAHL and SportDiscus.

Eligibility criteria 

Only randomised controlled trials with RET ≥6 weeks in duration and dietary protein supplementation.

Delayed conception in women with low-urinary iodine concentrations: a population-based prospective cohort study

Abstract

Study Question

Is iodine deficiency associated with decreased fecundability?

Summary Answer

Moderate to severe iodine deficiency is associated with a 46% decrease in fecundability.

What is Kanown Already

Iodine deficiency is common in women of childbearing age but its effect on fecundability has not been investigated.

Maternal choline supplementation during the third trimester of pregnancy improves infant information processing speed: a randomized, double-blind, controlled feeding study

ABSTRACT 

Rodent studies demonstrate that supplementing the maternal diet with choline during pregnancy produces
life-long cognitive benefits for the offspring. In contrast, the two experimental studies examining cognitive
effects of maternal choline supplementation in humans produced inconsistent results, perhaps because of poor
participant adherence and/or uncontrolled variation in intake of choline or other nutrients.Weexamined the effects
of maternal choline supplementation during pregnancy on infant cognition, with intake of choline and other

Eggs early in complementary feeding increase choline pathway biomarkers and DHA: a randomized controlled trial in Ecuador

Abstract

Background

Choline status has been associated with stunting among young children. Findings from this study showed that an egg intervention improved linear growth by a length-for-age z score of 0.63.

Objective

We aimed to test the efficacy of eggs introduced early in complementary feeding on plasma concentrations of biomarkers in choline pathways, vitamins B-12 and A, and essential fatty acids.

Consumption of whole eggs promotes greater stimulation of postexercise muscle protein synthesis than consumption of isonitrogenous amounts of egg whites in young men

Abstract

Background:

Protein in the diet is commonly ingested from whole foods that contain various macro- and micronutrients. However, the effect of consuming protein within its natural whole-food matrix on postprandial protein metabolism remains understudied in humans.

Objective:

We aimed to compare the whole-body and muscle protein metabolic responses after the consumption of whole eggs with egg whites during exercise recovery in young men.

Poor Appetite and Dietary Intake in Community-Dwelling Older Adults

Abstract

Background/objectives

Poor appetite in older adults leads to sub-optimal food intake and increases the risk of undernutrition. The impact of poor appetite on food intake in older adults is unknown. The aim of this study was to examine the differences in food intake among older community-dwelling adults with different reported appetite levels.

Design

Cross-sectional analysis of data from a longitudinal prospective study.

Setting

Health, aging, and body composition study performed in the USA.

Even mealtime distribution of protein intake is associated with greater muscle strength, but not with 3-y physical function decline, in free-living older adults: the Quebec longitudinal study on Nutrition as a Determinant of Successful Aging (NuAge study)

Abstract

Background

Functional status declines with aging, thus impeding autonomy. Recently, a more even mealtime distribution of dietary protein was positively associated with muscle mass, but the relation of this distribution to physical performance remains unknown.

Objective

We examined the relation between mealtime protein-intake distribution and physical performance and its 3-y decline in community-dwelling older adults.

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