Does the Temporal Asymmetry of Short-Term Heart Rate Variability Change during Regular Walking? A Pilot Study of Healthy Young Subjects

Figure 4

The asymmetries of short-term heart rate variability after wavelet detrending. In order to show the changes, results from the same individual were connected by lines. Horizontal bars indicate the median and quartiles. values were from Wilcoxon signed-rank test of each pair. ((A1) and (A2)) ΔPI; ((B1) and (B2)) ΔGI; ((C1) and (C2)) ΔSI; ((D1) and (D2)) ΔAI. Rest: results under resting seated position; Walk: results during regular walking. 13 individuals show reduction from Rest to Walk in (A1), 12 individuals show reduction from Rest to Walk in (C1), and 12 individuals show reduction from Rest to Walk in (D1). Results from males and from females are marked in different colors (male: green; female: brown). Lower panels summarize the box plots (that show from top to bottom the max, 3rd quartile, median, 1st quartile, and min) for males and females, separately. Outliers, if there are any, are marked by “+.”