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The purpose of this study was to determine the effect of acute protein and glucose intake on testosterone levels measured in adolescent boys and determine whether changes in testosterone levels are associated with alterations in short-term food intake. It was hypothesized that 1) ingestion of a protein beverage would result in no change of testosterone levels whereas glucose would result in a significant decrease of testosterone levels 60 minutes after ingestion and 2) decreases of testosterone levels as a result of the glucose preload would predict food intake for boys of similar body size. The first objective was to investigate the effect of an acute protein or glucose drink on testosterone levels and the second objective was to determine whether changes of testosterone levels associate with food intake.
Control, Glucose, Protein
University of Toronto
University of Toronto
Published on BioPortfolio: 2018-01-31T14:05:11-0500
This study is aimed at understanding neuroendocrine responses to different types of sugars and how this influences feeding behavior among lean, obese and obesity prone individuals.
Primary Objective: To examine whether the consumption of preloads varying in protein quality effect subsequent meal energy and macronutrient content Secondary Objectives: To examine wheth...
The purpose of this experiment is to investigate the effect of active video game playing for 30 minutes on food intake and subjective appetite. The investigators hypothesize that video gam...
Higher than average blood sugar (glucose) levels are linked to an increased risk of developing type 2 diabetes. As such, there is interest in identifying dietary factors that could lower b...
The purpose of this study is to evaluate the effects of ERT on appetitive behavior and withdrawal in short-term smoking cessation compared to smoking ad lib in postmenopausal female smoker...
Although issues of motivation, including appetitive searching behavior, have been crucial aspects of behavior systems approaches since their inception, as well as in the ethological research and model...
Antipredator defense is organized in a way that mirrors Timberlake's feeding behavior system because the goal of defense is to thwart predatory behavior. Each predatory mode has a corresponding antipr...
The aim of this study was to assess the influence of chronic restraint stress on amphetamine (AMPH)-related appetitive 50-kHz ultrasonic vocalisations (USVs) in rats differing in freezing duration in ...
Glucose transporters (GLUTs) are an essential kind of protein that exists in the neuron, which are responsible for the glucose transport. In the present study, we performed molecular dynamic simulatio...
The current study compared electrophysiological responses (the feedback-related negativity [FRN]) to appetitive and aversive outcomes between a group of college drinkers and non-drinkers. 50 undergrad...
Animal searching behavior. The variable introductory phase of an instinctive behavior pattern or sequence, e.g., looking for food, or sequential courtship patterns prior to mating.
A glucose transport protein found in mature MUSCLE CELLS and ADIPOCYTES. It promotes transport of glucose from the BLOOD into target TISSUES. The inactive form of the protein is localized in CYTOPLASMIC VESICLES. In response to INSULIN, it is translocated to the PLASMA MEMBRANE where it facilitates glucose uptake.
Maintenance of a constant blood glucose level by perfusion or infusion with glucose or insulin. It is used for the study of metabolic rates (e.g., in glucose, lipid, amino acid metabolism) at constant glucose concentration.
Manipulation of the behavior of persons or animals by biomedical, physical, psychological, or social means, including for nontherapeutic reasons.
A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1).
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...
Diabetes Diabetes Endocrine Disorders Obesity Oxycontin Renal Disease Thyroid Disorders Endocrinology is the study of the endocrine glands and the hormones that they secrete (Oxford Medical Dictionary). There are several g...
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...