Fig. 4From: Effect of upper torso inclination in Fowler’s position on autonomic cardiovascular regulationResults of each inclination at 30° and 60° (Experiment 2). Means (±SEM) of tidal volume (a), ln RSA (b), logarithm-transformed transfer gain between respiratory sinus arrhythmia and tidal volume (ln RSA-TF) (c), and ln sBRS (d). *p < 0.05; † p < 0.01Back to article page