PSY333H1 Lecture : PSY333H1 Lecture 4
Document Summary
Marked by its high intensity, long duration, need for high endurance. Jogging, bicycling, swimming, rope skipping: anaerobic exercise. Requires short, intensive bursts of energy but no increased amt of oxygen use. Short-distance running, softball (short sprints to next base) Muscles push hard against each other or against object. Pushing hard against a solid wall: isotonic exercise. Contraction of muscles & the movements of joints. Involves exerting effort to move muscles & joints against a variable amt of resistance. Reasons: physical fitness, weight control, cardiovascular health, increased longevity, protection against cancer, prevention of osteoporosis, control of diabetes, better cognitive fn"ing, & buffer against depression, anxiety, and stress. Physical activity: expenditure of energy, either purposely or w/o intention, as a result of bodily movements produced by skeletal muscles as part of leisure or work activities. Exercise is not just about the optimization of body weight.
