give the 3 energy systems
Answer (1)
Answer:Here are the three energy systems: 1. Phosphagen System (ATP-PC System / Anaerobic Alactic System): * Fuel Source: Stored ATP and phosphocreatine (PC) within the muscle cells. * ATP Production: Very rapid and immediate. PC rapidly donates a phosphate group to adenosine diphosphate (ADP) to re-synthesize ATP. * Duration: Provides energy for very short, high-intensity bursts of activity, typically lasting up to 10-30 seconds (e.g., a 100-meter sprint, a heavy weight lift, a jump). * By-products: No significant by-products that cause fatigue. * Oxygen Requirement: Does not require oxygen (anaerobic). 2. Glycolytic System (Anaerobic Lactic System): * Fuel Source: Glucose (from blood glucose and stored glycogen in muscles). * ATP Production: Rapid, but slower than the phosphagen system. It breaks down glucose without oxygen. * Duration: Dominant for high-intensity activities lasting from approximately 30 seconds to 2-3 minutes (e.g., a 400-meter sprint, a strong effort in interval training). * By-products: Produces lactic acid (lactate), which accumulates in the muscles and can lead to fatigue and the burning sensation associated with intense exercise. * Oxygen Requirement: Does not require oxygen (anaerobic). 3. Oxidative System (Aerobic System): * Fuel Source: Primarily carbohydrates (glucose/glycogen) and fats, and in extreme cases, protein. * ATP Production: Slowest rate of ATP production, but produces a large amount of ATP. It requires oxygen. * Duration: Predominant for low to moderate-intensity activities lasting longer than 2-3 minutes (e.g., long-distance running, cycling, swimming, walking, daily activities). * By-products: Produces carbon dioxide and water. * Oxygen Requirement: Requires oxygen (aerobic).
