1. Ph ysiologic changes associated with aerobic training include increases in al
ID: 3519120 • Letter: 1
Question
1. Ph ysiologic changes associated with aerobic training include increases in all of the following except: A) Heart volume B) Cardiac cycle time ) Muscle capillarization D) Motor nervous system 2. Your genetic make-up more than likely exerts the greatest influence on what muscle distribution? A) Blood pH B) Muscle firing rates C) Fiber type D) Cardiac output false? Compared to sedentary individuals, people with the highest CV fitness trained) will always have the greatest training improvements as they continue to train. A) True B) False 4. Which of the following will always govern the energy pathway that will be used during exercise? A) Muscle strength B) Blood redistribution C) Exercise Duration D) The Motor Unit 5. The recommendation for a well-rounded training program includes: A) Flexibility and Aerobic training B) Aerobic, resistance, and flexibility training C) Aerobic training only D) Resistance and Flexibility training 6. At rest, trained muscles will store an increased amount of all of the following except: A) ATP B) PCr C) Glycogen D) Lactate Page
Explanation / Answer
Answer 1. Answer will be option c because cardiac cycle times will decrease due to increase in the heart rate. Increase in the heart rate is due to sympathetic stimulation of the heart. Increased heart rate causes increase in cardiac output and heart volume. More blood will be pumped by the heart and more muscle cappilarisation will occur.
Answer 2. Answer will be option c that is muscle fibers types. The muscle fiber types are decided by the genetic make up of the person. Blood pH, muscle firing rate and cardiac output are physiological parameters and are decided by the external physiological factors.
Answer 3. Answer will be option B that is false. Exercise causes positive effects on the body but it is not always true because chronic exercise can cause changes in the heart muscle that may leads to decreased cardiac output and other cardiovascular physiological parameters.
Answer 4. Answer will be option D that is the motor unit. The motor units are the functional unit of the muscle contraction. There is role of ATPase in the muscle contraction in order to take calcium into the sarcoplasmic reticulum. Calcium causes formation of cross bridge between actin and myosin for muscle contraction.
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