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Changes (Δ) in heart rate, stroke volume, cardiac output, and total peripheral resistance (TPR) upon the decision to move from cool-to-warm (C→W) and from warm-to-cool (W→C) in younger adults (n = 12) and ‘at risk’ older adults (n = 6). Mean ± SD, * different from C→W (P ≤ 0.05), Y different from younger (P ≤ 0.02).
