Age-related changes in the muscle strength of the extremities of 123 women (20–79 years) were measured using a hand-held dynamometer. The isometric strength of three upper- and three lower-extremity muscle actions declined across ages. The magnitudes of strength decreases were a function of both the action and side tested. The earlier and steeper strength declines in actions of functional importance, e.g., knee extension, should alert those working with aging women of the potential importance of strengthening such muscle actions.
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