HDF 100 Lecture Notes - Prostate Cancer, Bone Density, Cardiac Output
Document Summary
Middle adulthood: physical and cognitive development chapter fifteen. When are we middle aged: developmentalists consider middle adulthood to span the years from 40-65. Physiological aging: changes in the body"s, metabolism, muscle mass/strength, bone density, aerobic capacity, ability to regulate body temperature. Bone density: bones begin to lose density at around the age of 40; as bones lose density they become more brittle and prone to fracture. Aerobic capacity: cardiovascular system becomes less efficient as we age. The maximum heart rate decreases as we age. resting heart rate and the cardiac output (amount of blood pumped over a period of time) do not change. In response to stress or exertion, older adults increasing risk of stroke. Lung capacity lung tissue stiffens with age: breathing capacity declines by half, regular exercise can offset this loss. Leading causes of death: during middle adulthood: cancer, heart disease and accidents.
