Category: Human Energetics

Human Energetics

Energy Expenditure

All metabolic processes in the body require energy supply (food) but depend on the use of oxygen (O2) for extraction of energy which ultimately results in heat production. There are two approaches to quantify human energy expenditure during rest and physical activity. They are: direct calorimetry and indirect calorimetry. Direct calorimetry is the method of directly quantifying the body’s rate of biologic work (energy expenditure/metabolism) by … Continue reading Energy Expenditure

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Human Energetics

ATP Electron Transport

ATP supply & Energy production: Our body has a continuous ATP electron transport supply from the cells’ cytosol (Anaerobic – Glycolysis) and the mitochondria (Aerobic – Citric acid cycle/Respiratory chain), through various metabolic pathways. In cytosol (an aqueous component of the cytoplasm of a cell), the anaerobic breakdown of phosphocreatine (PCr), glucose, glycerol, and carbon skeletons of deaminated amino acids take place to produce ATP for … Continue reading ATP Electron Transport

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Energy Restoration After Exercise: Principles of Muscle Recovery

Originally published on HVMN by Nate Martins. Prolonged exercise causes muscle glycogen depletion and inhibition of muscle protein synthesis requiring restoration of muscle glycogen stores after exercise. Post exercise nutrition improves recovery and the composition of meal after exercise affects the rate of recovery. Muscle recovery should be a part of every training plan (specifically post-workout). But there are multiple strategies athletes can employ that … Continue reading Energy Restoration After Exercise: Principles of Muscle Recovery

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Heart-Lung-Muscle axis | Role of the lungs in maximal oxygen consumption

Maximal oxygen consumption (VO2max) is the gold standard to measure one’s cardiopulmonary fitness. The VO2max represents the maximal flow of oxygen through the lungs into blood via., simple diffusion, which in turn gets pumped by the heart into the muscles during the maximal graded exercise test (GXT). It was long thought that lung function may not be a limiting factor for one’s maximal performance during … Continue reading Heart-Lung-Muscle axis | Role of the lungs in maximal oxygen consumption

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Home, Training Principles

Overload Principle: Training with Purpose

Authored by Nate Martins Original article from HVMN. Overload principle states that in order for the muscle to increase in size, strength and endurance, it must be regularly challenged to produce an output that is as near as possible to maximum capacity. The technique pushes the body past its limits, further breaking it down to force adaptations that lead to performance gains. Skeletal muscle is composed … Continue reading Overload Principle: Training with Purpose

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