View clinical trials related to Protein.
Filter by:The incidence of type 2 diabetes worldwide has increased significantly over the past decades, which is associated with changing dietary habits and physical inactivity. According to the diet, so far there has been a great focus on the quality of carbohydrates and fat in relation to metabolic health, while the importance of protein has been neglected. The Danes' average protein intake is 1.5 g/kg/day, which is at the high end of the recommendations (0.8-1.5 g/kg/day) from the Nordic Nutrition Recommendations (NNR 2023). Recent studies in rodents have shown that protein restriction has positive effects on health, including improved glucose and insulin homeostasis and reduced fat mass, while a high intake of protein has a negative effect on insulin sensitivity. Previously the investigators have shown, in healthy young men, that consuming a diet low in protein (0.9 g/kg/day), compared to the participants usual diet (1.5 g/kg/day), over 7 days, resulted in an increased insulin sensitivity as well as a marked increase in the plasma fibroblast growth factor 21 (FGF21) concentration. The increased insulin sensitivity is thought to be mediated by the increase in plasma FGF21 concentration. However, the effect is not yet fully understood. It is also not clear whether the increase in plasma FGF21 concentration, as well as the mentioned metabolic effects on insulin and glucose homeostasis, will take place if the participants are kept weight stable on a eucaloric diet.
Obesity is considered the epidemic of the 21st century. Obesity is a multifactorial disease and the most important risk factors are poor diet and sedentary lifestyle. An excessive body weight contributes to increase the risk of suffering from other diseases and mortality rates. Therefore, the prevention and control of excessive body weight as well as its comorbidities are essential. In this sense, the principal strategy to treat obesity is to improve dietary habits and increase physical activity. However, the rate of obesity continues rising. In order to deal with this problem, new strategies to combat obesity are being investigated, such as the investigation of new bioactive compounds with satiating capacity that can be included in healthy dietary patterns to improve adherence to dietary treatments. Considering this background, the main objective of this research is to assess the effect of daily consumption of protein rich bars accompanied by healthy dietary recommendations on weight loss of overweight/obese adult men and women.
The investigators have designed a 2-center, pilot feasibility, randomized controlled trial (PROXIMUS) to determine the feasibility and safety of a larger multi center, randomized open-label trial comparing high protein combined with individualized exercise vs. standard management during the acute phase of critical illness in children. The investigators aim to determine the impact of the intervention on preservation of muscle mass; and functional status at 1 month and 6 months after randomization.
The specific hypothesis is that the consumption of 2 Hayward green kiwifruit (containing actinidin protease) prior to 100g of ground beef will increase the rate of protein digestion from the beef in the elderly, leading to an increased uptake of the essential amino acids. Furthermore, this increased essential amino acid availability will produce a greater postprandial net anabolic protein response, as well as increased fractional synthetic rates of muscle proteins.
The study aims to determine in healthy subjects the bioavailability of protein and amino acids of 4 protein sources: sunflower, rapeseed, lupin, flax. For this purpose, the investigators will compare two methods: 1. the standard method consisting in measuring the ileal digestibility using ileal tubes 2. an alternative method that has been proposed by an Food and Agriculture Organization (FAO) expert group: the dual isotope method
To highlight the importance of protein quality rather than the total protein content of a meal, the investigators will demonstrate that unlike high quality proteins, a single meal containing 30 g of an incomplete protein source does not stimulate skeletal muscle protein synthesis. Secondly, the investigators will directly challenge a prevalent, but untested, assertion that has the potential to negatively impact health. The goal is to demonstrate that complementary plant-proteins (i.e., two or more incomplete protein sources) must be consumed at the same meal to stimulate protein synthesis.
Twenty-four well trained runners (VO2max 60.73.7 ml O2 Kg-1 min1) completed a six week block randomized controlled intervention period. Subjects were randomly assigned to either PRO-CHO or CHO and matched in pairs for gender, age, VO2max, training and performance status. The PRO- CHO group ingested a protein beverage (0.3g kg-1) before and protein-carbohydrate beverage (0.3g protein kg-1 and 0.1g carbohydrate kg-1) after each exercise session. The CHO group ingested energy matched carbohydrate. Post-absorptive muscle biopsies were obtained pre and post intervention for analysis HAD, CS and PGC-1. Subjects completed two physical tests 6 km performance test (pre, week 1 and week 6) and aVo2max test (pre and post intervention).
This study will assess effects of an acute dose of the amino acid arginine on metabolism in healthy young men.
To conduct a randomized, double-blind, controlled clinical trial to determine the independent and combined effects of dietary conjugated linoleic acid (CLA) and vitamin D supplementation on anabolic signaling, the expression of growth regulatory factors, and muscle protein turnover in older adults.
The objective of the study is to assess the effect of low-calorie diets with normal (18%) vs. high (35%) protein (mainly coming from animal source) composition on body weight and carbohydrates metabolism in overweight and obese subjects with pre-diabetes or diabetes. A dietary intervention is carried out during 6 months in 100 subjects who are individually randomized to an energy-restricted diet with two types of macronutrients composition: 1) 35% protein, 30% fat and 35% carbohydrates and 2) 18% protein, 30% fat and 52% carbohydrates. Around 80% of total protein in diet comes from animal source (of whom around 40% from lean red meat). Subjects are provided with weekly menus and different recipes to use them as part of the diet. Monitoring visits with the nutritionist will be performed every 15 days. At the beginning of the study, after 3 and 6 months, the following parameters are determined: anthropometric (weight, waist circumference, body mass index and body composition), blood pressure, dietary (72-hours dietary registry) and exercise and biochemical analysis (total cholesterol, triglycerides, HDL cholesterol, LDL cholesterol, apolipoproteins A1 and B, iron, transferring, ferritin, uric acid, glucose, HbA1c, insulin, adiponectin and resistin). Urine samples are also collected to assess microalbuminuria and ureic nitrogen.