Pulses were taken from 26 university students (22 male and 4 female) for spectral analysis. Spectral energy ratios SER (f) were derived from spectra at 5, 10, and 15 Hz. We find that the frequency distribution of SER(10) has a mean value of 512 and a standard deviation of 408. The SER (5) distribution is less normal and the SER(15) is quite irregular. Our previous work suggests an SER(10) as a measure of the health conditions. This work supports and amplifies that original suggestion.
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Wei et al. (1985) studied this question.
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