Strength training.
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D009133:Muscular Atrophy / Q000517:prevention & control*; D014891:Weight Lifting / Q000502:physiology*