The Acute Effect of Protein or Carbohydrate Intake on Testosterone Levels and Food Intake in Children and Adolescent Boys

2018-01-31 14:05:11 | BioPortfolio


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.

Study Design


Appetitive Behavior


Control, Glucose, Protein


University of Toronto
M5S 3E2




University of Toronto

Results (where available)

View Results


Published on BioPortfolio: 2018-01-31T14:05:11-0500

Clinical Trials [2803 Associated Clinical Trials listed on BioPortfolio]

Neural Mechanisms for Appetitive Responses to High Reward Foods

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.

The Effects of Protein Source on Appetite Control, Satiety, and Subsequent Food Intake: A Clinical Screening Study

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...

Active Video-game Playing and Food Intake in Children

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...

Impact of Whey and Leucine on Glycaemia in Adults Without Diabetes

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...

Tobacco Cessation in Postmenopausal Women (Part I) - 1

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...

PubMed Articles [23575 Associated PubMed Articles listed on BioPortfolio]

A place for emotions in behavior systems research.

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...

Timing and the Transition Between Modes in the Defensive Behavior System.

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...

Stress changes amphetamine response, D2 receptor expression and epigenetic regulation in low-anxiety rats.

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 ...

The Key Factors in Conformation Transformation of an Important Neuronic Protein Glucose Transport 3 Revealed by Molecular Dynamics Simulation.

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...

Electrophysiological responses to appetitive and aversive outcomes: A comparison of college drinkers and non-drinkers.

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...

Medical and Biotech [MESH] Definitions

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).

More From BioPortfolio on "The Acute Effect of Protein or Carbohydrate Intake on Testosterone Levels and Food Intake in Children and Adolescent Boys"

Quick Search

Relevant Topics

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 ...

Searches Linking to this Trial