Fig. 2From: Effect of upper torso inclination in Fowler’s position on autonomic cardiovascular regulationTypical data of time series of RR interval (top panels) and power spectral density of RR interval (lower panels) in one participant under all conditions (left, middle and right panels: 30°, 45° and 60°, respectively). Peak of power spectral density around 0.25 Hz increased with increased upper torso angle (bottom panels)Back to article page