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Keywords: orthostatic stress
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Clin Sci (Lond) (2004) 107 (1): 29–35.
Published: 23 June 2004
... groups in supine position with free and with controlled breathing, and during orthostatic stress. Temporal and spectral HRV indices were obtained from the ECG signal processing. The main results showed that, in supine position with free and controlled breathing, the HF (high-frequency) spectral component...
Clin Sci (Lond) (2004) 106 (4): 407–412.
Published: 01 April 2004
... subjects at rest, during maximal treadmill exercise ( n =8) and during decreases caused by orthostatic stress ( n =8). Comparison with a rebreathing method indicated that Portapres® tended to overestimate cardiac output. The random errors of the estimates (precision), expressed as ±2 S.D...