A.3.3 Fatigue and recovery

Fatigue that happens in the muscles, caused by low energy and buildup of waste products, making the muscles unable to contract as strongly Specifically in the neuromuscular junction or the muscle fibers themselves.

Occurs in the CNS, affecting the brain and spinal cord, leading to a reduced ability to activate muscles

Fatigue is a reversible reduction in the ability to generate force,resulting in a decline in performance

Metabolic acidosis is a reduction of a normal pH of a fluid or tissue caused by acidic products

The CNS reduces its ability to activate muscles during prolonged exercise, leading to decreased force output, slower reactions, reduced coordination, and overall lower performance.

Acidosis occurs when the pH within muscle fibers decreases, typically due to an accumulation of H⁺ ions, resulting in impaired muscle function and fatigue.

pH is a measure of hydrogen ion (H⁺) concentration, determining how acidic or basic a solution is.

During intense exercise, anaerobic glycolysis produces lactate and H⁺ ions, and the buildup of H⁺ lowers pH, leading to muscle fatigue.

As pH drops during intense exercise, enzymes become less effective, reducing energy production and contributing to muscle fatigue.

A protein involved in muscle contraction that binds to calcium ions to allow actin-myosin cross-bridge formation.