Aging and Exercise Flashcards
Fastest growing segment of American Society
Elderly persons (>85)
Percent of the US exceeding 65
13%
By 2030, ___ % will exceed age 85
20%
Percent that engage in vigorous physical activity 3 times a week for 30 minutes
15%
Percentage that doesnt engage in physical activity
60%
Percentage leading sedentary lifestyles
25%
Most popular leisure time activities
Walking, gardening, and yard work
Percentage of light to moderate physical activity
22%
Physical activity occurs more among….
women, blacks, hispanics, older adults, less afluent persons
Highest strength levels
Ages 20-40, when CSA is largest
Concentric strength declines slowly then rapidly after middle age
The ___ declines faster than ___
Capacity for power generation; maximal strength
Declines in ____ strength begin at a later age and progress more slowly than ___ strength
Eccentric; concentric
___ strength deteriorates more slowly than ___ strength
Arm; Leg
Strength loss relates to
Limited mobility and fitness status, potential for more accidents
Motor unit remodeling
Normal, continuous process involving motor endplate repair and reconstructio. Deteriorates in old age