Physiology And Injuries In Sports — Physical Education STD 12 Commerce — Question
CBSE BoardEnglish MediumSTD 12 CommercePhysical EducationPhysiology And Injuries In Sports4 Marks
Question
Elaborate any three physiological factors determining endurance.
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Answer
Physiological Factors Determining Endurance:
Aerobic Capacity: To perform an activity continuously, energy is required by the muscles which can be supplied by the presence of oxygen. Therefore, the ability of the organism to maintain adequate supply of $O_2$ to the working muscles (i.e., aerobic capacity) for energy liberation is important for endurance performance.
Lactic Acid Tolerance: The ability to tolerate higher concentration of lactic acid is a significant factor in determining anaerobic capacity. The lactic acid tolerance is important for activities that lasts for about $40$ seconds or more. The lactic acid tolerance capacity can be improved through training. So, it can help in improving endurance performance.
Movement Economy: The economical movements are significant for endurance performance. A runner, who can run at a given pace with less energy expenditure can continue with the same speed for longer duration. A good technique in endurance sports can save energy. For example, in swimming $20-30\%$ of the energy can be saved if the movements are correct. For economy in movements, good runners set their centre of gravity less higher, so that unnecessary movements are reduced.
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