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Autonomic effects on the spectral analysis of heart rate variability after exercise
Heart And Circulatory Physiology, 08/07/09

Ng J et al. – Although there are marked reductions in the frequency domain measures in recovery versus rest, the fluctuations in the low and high frequency bands respond to autonomic blockade in the expected fashion. Time domain measures of HRV were highly correlated with frequency domain measures and therefore provide a computationally more efficient assessment of autonomic influences during recovery from exercise that is less susceptible to anomalies of frequency domain analysis.

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