PHYS ED 32 Lecture Notes - Lecture 2: Glycogen, Cellular Respiration, Adenosine Triphosphate
17 Nov 2020
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Defined as the ability of the body to perform prolonged large muscle, dynamic exercise at moderate to vigorous levels of intensity. Take in (lungs), deliver (heart), use (muscle cells) oxygen ( working muscles. Benefits of c-r endurance exercise (fig 3. 3, p. 68) The body converts chemical energy from food into substances the cells can use as fuel. Atp (adenosine triphosphate) is the basic form of energy. When cells need energy, atp is created, stored and used used by cells. effectively. Three energy systems (tbl 3. 1, p. 66) :o2: immediate stores (atp, cp) (explosive, nonoxidative metabolism (anaerobic) These 3 energy systems are used in combination depending on the intensity and duration of activity. Table: 3. 1 characteristics of the body"s energy systems. Body stores of glycogen, glucose, fat, and protein. Weight lifting, picking up a bag of groceries. 400-meter run, running up several flights of stairs. 30-minute walk, standing in line for a long time.
