Arno Greyling
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View article: Effects of Tea (<i>Camellia sinensis</i>) or its Bioactive Compounds <scp>l</scp>-Theanine or <scp>l</scp>-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Effects of Tea (<i>Camellia sinensis</i>) or its Bioactive Compounds <span>l</span>-Theanine or <span>l</span>-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials Open
Context The bioactive compounds found in tea from Camellia sinensis, namely theanine, caffeine, and polyphenols, can potentially improve short-term and long-term health outcomes. Objective The aim of this study was to assess the effects of…
View article: Dietary Sources and Amounts of Flavan-3-Ols for Cardiovascular Benefit – A Meta-Analysis
Dietary Sources and Amounts of Flavan-3-Ols for Cardiovascular Benefit – A Meta-Analysis Open
View article: Protein supplementation changes gut microbial diversity and derived metabolites in subjects with type 2 diabetes
Protein supplementation changes gut microbial diversity and derived metabolites in subjects with type 2 diabetes Open
High-protein diets are promoted for individuals with type 2 diabetes (T2D). However, effects of dietary protein interventions on (gut-derived) metabolites in T2D remains understudied. We therefore performed a multi-center, randomized-contr…
View article: Gut Microbiota–Targeted Nutritional Interventions Improving Child Growth in Low- and Middle-Income Countries: A Systematic Review
Gut Microbiota–Targeted Nutritional Interventions Improving Child Growth in Low- and Middle-Income Countries: A Systematic Review Open
View article: Correction to: Efficacy of a low-FODMAP diet in adult irritable bowel syndrome: a systematic review and meta-analysis
Correction to: Efficacy of a low-FODMAP diet in adult irritable bowel syndrome: a systematic review and meta-analysis Open
View article: Acute Effects of Polyphenols on Human Attentional Processes: A Systematic Review and Meta-Analysis
Acute Effects of Polyphenols on Human Attentional Processes: A Systematic Review and Meta-Analysis Open
Background: The effects of polyphenols on cognitive functions have been extensively studied. Due to the large heterogeneity in the study designs, however, it is often difficult to interpret their efficacy. To address this issue, we conduct…
View article: Efficacy of a low-FODMAP diet in adult irritable bowel syndrome: a systematic review and meta-analysis
Efficacy of a low-FODMAP diet in adult irritable bowel syndrome: a systematic review and meta-analysis Open
View article: Acute glycemic and insulinemic effects of low-energy sweeteners: a systematic review and meta-analysis of randomized controlled trials
Acute glycemic and insulinemic effects of low-energy sweeteners: a systematic review and meta-analysis of randomized controlled trials Open
View article: Impact of isocaloric exchanges of carbohydrate for fat on postprandial glucose, insulin, triglycerides, and free fatty acid responses—a systematic review and meta-analysis
Impact of isocaloric exchanges of carbohydrate for fat on postprandial glucose, insulin, triglycerides, and free fatty acid responses—a systematic review and meta-analysis Open
View article: Targeting the delivery of dietary plant bioactives to those who would benefit most: from science to practical applications
Targeting the delivery of dietary plant bioactives to those who would benefit most: from science to practical applications Open
Background A healthy diet and optimal lifestyle choices are amongst the most important actions for the prevention of cardiometabolic diseases. Despite this, it appears difficult to convince consumers to select more nutritious foods. Furthe…
View article: Factors influencing the cardiometabolic response to (poly)phenols and phytosterols: a review of the COST Action POSITIVe activities
Factors influencing the cardiometabolic response to (poly)phenols and phytosterols: a review of the COST Action POSITIVe activities Open
Understanding why some bioactive plant compounds work effectively in some individuals but not, or less, in others is crucial for a full consideration of these compounds in future strategies of personalized nutrition for a better prevention…
View article: The acute effect of black tea consumption on resistance artery endothelial function in healthy subjects. A randomized controlled trial
The acute effect of black tea consumption on resistance artery endothelial function in healthy subjects. A randomized controlled trial Open
View article: Improving selection of markers in nutrition research: evaluation of the criteria proposed by the ILSI Europe Marker Validation Initiative
Improving selection of markers in nutrition research: evaluation of the criteria proposed by the ILSI Europe Marker Validation Initiative Open
The conduct of high-quality nutrition research requires the selection of appropriate markers as outcomes, for example as indicators of food or nutrient intake, nutritional status, health status or disease risk. Such selection requires deta…
View article: Impact of Flavonols on Cardiometabolic Biomarkers: A Meta‐Analysis of Randomized Controlled Human Trials to Explore the Role of Inter‐Individual Variability
Impact of Flavonols on Cardiometabolic Biomarkers: A Meta‐Analysis of Randomized Controlled Human Trials to Explore the Role of Inter‐Individual Variability Open
Several epidemiological studies have linked flavonols with decreased risk of cardiovascular disease (CVD). However, some heterogeneity in the individual physiological responses to the consumption of these compounds has been identified. Thi…
View article: Effects of wine and grape polyphenols on blood pressure, endothelial function and sympathetic nervous system activity in treated hypertensive subjects
Effects of wine and grape polyphenols on blood pressure, endothelial function and sympathetic nervous system activity in treated hypertensive subjects Open
View article: Inter-individual variability in response to the intake of flavonols on blood lipid levels: a meta-analysis of randomized controlled human trials
Inter-individual variability in response to the intake of flavonols on blood lipid levels: a meta-analysis of randomized controlled human trials Open
Cardiovascular diseases (CVD) continue to be the leading cause of morbidity and mortality in most developed countries [1]. Several epidemiological studies have linked flavonols with decreased risk of stroke [2] and CVD [3], whilst human in…
View article: Impact of volunteer-related and methodology-related factors on the reproducibility of brachial artery flow-mediated vasodilation
Impact of volunteer-related and methodology-related factors on the reproducibility of brachial artery flow-mediated vasodilation Open
Although FMD% showed good reproducibility, larger variation was observed in conditions with longer time between measurements, hypertension, less experience and lower baseline FMD%. Accounting for these factors may improve FMD% variability.
View article: Assessing the perceived quality of brachial artery Flow Mediated Dilation studies for inclusion in meta-analyses and systematic reviews: Description of data employed in the development of a scoring ;tool based on currently accepted guidelines
Assessing the perceived quality of brachial artery Flow Mediated Dilation studies for inclusion in meta-analyses and systematic reviews: Description of data employed in the development of a scoring ;tool based on currently accepted guidelines Open
View article: Adherence to guidelines strongly improves reproducibility of brachial artery flow-mediated dilation
Adherence to guidelines strongly improves reproducibility of brachial artery flow-mediated dilation Open
These data demonstrate that adherence to current expert consensus guidelines and applying contemporary techniques for measuring brachial artery FMD decreases its measurement error.
View article: Time for reference values and high-quality measurement to assess endothelial function?
Time for reference values and high-quality measurement to assess endothelial function? Open
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View article: Effect of a plant sterol-enriched spread on biomarkers of endothelial dysfunction and low-grade inflammation in hypercholesterolaemic subjects
Effect of a plant sterol-enriched spread on biomarkers of endothelial dysfunction and low-grade inflammation in hypercholesterolaemic subjects Open
Plant sterols (PS) lower LDL-cholesterol, an established risk factor for CHD. Endothelial dysfunction and low-grade inflammation are two important features in the development of atherosclerosis. Whether PS affect biomarkers of endothelial …
View article: The effect of a low-fat spread with added plant sterols on vascular function markers: results of the Investigating Vascular Function Effects of Plant Sterols (INVEST) study
The effect of a low-fat spread with added plant sterols on vascular function markers: results of the Investigating Vascular Function Effects of Plant Sterols (INVEST) study Open
View article: Elevation in blood flow and shear rate prevents hyperglycemia-induced endothelial dysfunction in healthy subjects and those with type 2 diabetes
Elevation in blood flow and shear rate prevents hyperglycemia-induced endothelial dysfunction in healthy subjects and those with type 2 diabetes Open
Hyperglycemia, commonly present after a meal, causes transient impairment in endothelial function. We examined whether increases in blood flow (BF) protect against the hyperglycemia-mediated decrease in endothelial function in healthy subj…