PEDS207 Chapter Notes - Chapter 15: Skeletal Muscle, Myoglobin, Cardiac Output

• School: University of Alberta
• Department: Physical Education and Sport
• Course: PEDS207
• Professor: Kelvin Jones

Document Summary

Physiological responses to short term exercise: during brief intense activity, oxygen reserves and energy sources are depleted, such activity is termed anaerobic (without oxygen), anaerobic power versus anaerobic capacity, as exercise period lengthens, anaerobic system contributes less and aerobic system takes over. Assessing anaerobic performance: anaerobic performance (tasks 10 30 s long, measures, total work output, peak power, mean power, normalized to body mass (kg, anaerobic capacity, possible field tests include 50 m sprint or sprinting flight of stairs. Normalize to kg, still goes up therefore more than just increased body mass. Changes in anaerobic performance: adulthood: once adult body size is attained, anaerobic performance is stable. In older adulthood, a loss of muscle mass can result in declining anaerobic performance. Anaerobic training: preadolescent and adolescent boys improve anaerobic performance with anaerobic training, one study found improvements in prepubescent girls, master athletes who train sufficiently maintain anaerobic performance as they age.