BPK 140 Chapter Notes - Chapter 6: Physical Fitness, Heart Rate, Osteoporosis
8 Sep 2017
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About half of canadians get at least 30 minutes of physical activity a week. Only 15% met the recommended 150 minutes per week of moderate to vigorous intensity physical activity. Only 5% had at least 30 min on at least 5 days. Less activity in household chores (electrical appliances, contracting out cleaning, gardening) Sedentary leisure (spectator sports, screen time) > 30 h/week > 4 h/d. Pa - any voluntary body movement that requires energy/burns calories (ex. Running on treadmill and lifting weights, walking, gardening) Exercise is planned, structured, repetitive pa intended to promote fitness. Physical fitness: extent to which the body responds to the demands of physical effort. The 4 s"s: stamina: endurance, aerobic fitness, strength (and muscular endurance): muscular fitness, suppleness: flexibility, slimness: body composition. The body adapts to imposed stresses: overload. The stressor must challenge the system: specificity. Lift heavy weights a few times increase strength. Lift lighter weights many times increase endurance: progression.
