PSY333H1 Lecture Notes - Lecture 4: Antigen, Coronary Artery Disease, Public Health Agency Of Canada
Document Summary
After looking at some of the attitudinal and behavioral principles identified in chapter 3, we are going to look at how these principles may be applied in health-enhancing behaviors. Physical activity: any skeletal muscle contraction that results in an increased energy expenditure. Any physical activity (even fidgeting) will use energy and burn calories. Exercise: repetitive physical activity or movement aimed at improving or maintain fitness or health. Four componenets of physical activity: type: identifies the physiological systems used in a particular activity. Flexibility: frequency: describes how much activity is performed over a period of time, intensity: describes load imposed on physiological systems, duration: temporal length of physical activity. Many different types of exercise or physical activity but physiologically there are 5 forms of exercise. Resistance related: isometric exercise- contract muscle group against immovable object without movement in body (improves muscle strength) Example: planking: isotonic exercise- place resistance on muscles by moving muscle groups; e. g. weightlighting (improves strength & endurance)
