Randomized trial shows exercise training improves physical frailty in very elderly people, indicating exercise is essential for health.
High-intensity resistance exercise training is a feasible and effective means of counteracting muscle weakness and physical frailty in very elderly people. In contrast, multi-nutrient supplementation without concomitant exercise does not reduce muscle weakness or physical frailty.
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Fiatarone et al. (1994) studied this question.
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