KP322 Chapter Notes - Chapter 13: Cardiac Muscle, Stroke Volume, Vo2 Max
11 Dec 2017
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Overload: for training effect to occur, a system or tissue must be challenged with an intensity, duration or frequency of exercise to which it is unaccustomed, over time, the tissue or system adapts to this load. Reversibility principle: fitness gains by exercising at an overload are quickly lost when training is stopped or overload is removed. Specificity: training is specific to the muscles involved, fiber types recruited, principal of energy system involved, velocity of contraction and type of muscle contraction, endurance. Increases in capillary and mitochondria number: resistance. Increase in # of contractile proteins: capillary and mitochondria may decrease. Involve a large muscle mass in dynamic activity for 20 to 60 minutes per session, three or more time per week, at an intensity of 50-85% vo2max. Vo2max increases an average of about 15-20: those who have high vo2max before will not see as much gains (cid:858)high respo(cid:374)ders(cid:859) to e(cid:454)er(cid:272)ise trai(cid:374)i(cid:374)g are people (cid:449)ho are ge(cid:374)eti(cid:272)all(cid:455) gifted.
