Table 1. Pre- and post-intervention comparisons of each speed. Data are median (IQR, interquartile range).
Speed Pre Post P Value
Median (IQR) Median (IQR)
Muscle tone (Hz) FAST 15.60 (15.22-16.15) 15.12 (14.47-15.40) 0.002*
SLOW 15.39 (14.84-16.16) 15.11 (14.45-15.49) 0.008*
SELF 15.66 (15.03-16.20) 15.46 (15.00-16.00) 0.133
P value 0.48 0.04#
Elasticity FAST 1.84 (1.53-2.09) 1.81 (1.52-2.05) 0.309
SLOW 1.69 (1.44-1.94) 1.73 (1.57-2.05) 0.145
SELF 1.72 (1.55-1.96) 1.79 (1.55-2.02) 0.845
P value 0.31 0.91
Stiffness (N/m) FAST 263.6 (244.5-274.3) 263.7 (236.0-277.6) 0.571
SLOW 246.8 (202.6-279.5) 250.1 (209.5-285.2) 0.276
SELF 271.4 (218.8-288.9) 251.0 (227.0-282.1) 0.184
P value 0.21 0.67
FAST, 30 beats per minute; SLOW, 15 beats per minute; SELF, Self-determined by participant; Hz, Hertz; N/m,
Newton/meter; Pre, Pre-intervention; Post, Post-intervention.* indicates a difference (P < .05) between pre-post.# indicates a difference (P < .05) between SELF and FAST, between SELF and SLOW.