Table 1.

Constants from the curve fit correlations of Fig. 3

Curve fit	Loading frequency (Hz)	A (SE)	B (SE)	p	R 2
(a)	1	−5.6 (3.4)	142 (19.0)	0.12	0.25
(b)	10	−9.6 (1.8)	152 (10.5)	<0.001	0.77
(c)	50	−20 (4.6)	150 (14.5)	<0.001	0.52
(d)	100	−6 (4.2)	106 (15.6)	0.24	0.04

SE is the standard error of the coefficients A and B. R2 is a squared correlation coefficient and shows how well the lines fit the data points. If p < 0.05 it indicates that the line is statistically significant