Fatigue - Kai flashcards

Fatigue in sport

A reversible feeling of exhaustion and decrease in ability to produce force leading to a decline in performance.

Peripheral Fatigue

Develops rapidly and is caused by reduced muscle cell force, involving mechanical and cellular changes in the muscular system.

Central Fatigue

Develops during prolonged exercise and is caused by impaired mental function of the central nervous system, involving physiological processes within the central nervous system.

High-intensity activities

Vigorous bouts of exercise lasting less than a second to 2 minutes, anaerobic in nature, with very high heart rates and dominance of creatine phosphate and lactic energy.

Endurance Activities

Prolonged sessions lasting over 2 minutes to hours, low to medium intensity, aerobic respiration as an energy source, and heart rate plateauing when oxygen demands are met.

Causes of Athlete Fatigue

Depletion of energy sources, increase in exercise by-products, reduced motivation, overheating, and electrolyte imbalance.

Peripheral Fatigue in High-intensity Activities

Caused by lack of energy delivery, excess physical activity, depletion of energy sources like creatine phosphate, and accumulation of by-products like lactic acid.

Peripheral Fatigue in Medium Endurance Activities

Caused by depletion of glycogen reserves, reduction in calcium release, dehydration, overheating, depletion of acetylcholine, and electrolyte loss.

Recovery from Fatigue after Sport

Involves active recovery through low-intensity exercise and techniques like excess post-exercise oxygen consumption (EPOC) and various recovery methods such as replacing electrolytes, active recovery, ice baths, sleep, and replenishing energy stores.