Related Experiment Video
Updated: Jul 1, 2026
11:51
Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
Testosterone Replacement Therapy as a Foundation for Body Composition Remodeling: Synergistic Roles of Resistance
Luis M Canal de Velasco1, José Emiliano González Flores2,3, Gabriel Kraus Fischer4
1School of Medicine and Health Sciences, Panamerican University, Mexico City, MEX.
Cureus
|June 30, 2026
Summary
Testosterone replacement therapy (TRT) improves body composition and muscle health. Combining TRT with exercise and nutrition amplifies benefits, offering a comprehensive approach to managing hypogonadism and improving metabolic function.
Area of Science:
- Endocrinology
- Metabolic Health
- Sports Medicine
Background:
- Testosterone is crucial for male body composition, muscle metabolism, and metabolic health.
- Deficiency is linked to increased fat, reduced muscle mass, poor performance, and metabolic issues.
- Testosterone replacement therapy (TRT) aims to restore androgen levels and improve body composition.
Purpose of the Study:
- To propose a framework where TRT enhances lifestyle interventions for anabolic effects.
- To review evidence on TRT's impact on muscle quality and function.
- To highlight TRT's role in improving musculoskeletal integrity and metabolic health.
Main Methods:
- Review of mechanistic and clinical data on TRT and lifestyle interventions.
- Analysis of TRT's effects on muscle protein synthesis, satellite cell activation, and mitochondrial function.
- Evaluation of combined TRT and resistance exercise/protein intake effects.
Main Results:
- TRT enhances muscle protein synthesis and mitochondrial function.
- Combined TRT with resistance exercise amplifies hypertrophy and performance.
- Adequate protein intake with TRT supports muscle remodeling and preserves fat-free mass.
Conclusions:
- TRT provides a biological foundation for amplified anabolic effects from lifestyle interventions.
- Body composition changes are critical metrics, not just body weight.
- TRT, with lifestyle interventions, is a comprehensive strategy for hypogonadism.
Keywords:
body compositionlean body massmetabolic healthprotein intakeresistance trainingtestosterone replacement therapyMore Related Videos
12:59Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
08:03Treatment of Ligament Constructs with Exercise-conditioned Serum: A Translational Tissue Engineering Model
Published on: June 11, 2017
Related Concept Videos
01:26Testosterone: Functions and Regulation
The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
01:27Exercise and Muscle Performance
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
01:24Muscle Recovery and Fatigue
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...
01:28Proteins: Dietary Sources and Requirements
Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
01:16Insulin: Dosing Regimen and Adverse Effects
Insulin-replacement therapy usually includes both long-acting insulin (basal) and short-acting insulin (to cater to postprandial needs). In a diverse group of type 1 diabetes patients, the average daily insulin dose is typically 0.5-0.7 units/kg body weight. However, obese patients and pubertal adolescents may need more due to insulin resistance.
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...
01:26Cellular Adaptation II: Hypertrophy
Hypertrophy is the increase in the size of individual cells, resulting in the enlargement of a tissue or organ. Unlike hyperplasia, which involves an increase in cell number, hypertrophy is characterized by an increase in cell volume. This process often occurs in response to higher functional demand or hormonal stimulation, leading to the production of more structural proteins and organelles, thereby enhancing the cells' work capacity.There are two primary types of hypertrophy: physiological...