This research aims to: (1) determine how the brain, heart, vessels, lungs, and muscle oxygenation regulation in female and male frail older adults. In study #1, participants will perform three postural transitions: (a) sit-to-stand, (b) lie-to-stand, and (c) lie-to-sit, and three identical constant workload walking tests. The autonomic (brain, e.g., sympathetic and parasympathetic activity), cardiovascular […]
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