Table 4.

Variables of anterior-posterior (AP) direction and abbreviations for variable names in Table 3

Variable abbreviation	Variable name
Low(Y)	Amplitude of AP-swaying during low variation
C(Y)	Amplitude of 95% AP-swaying line
Y	Amplitude of AP-swaying line
C(VY)	Mean velocity along C(Y)
VY	Mean velocity along AP-swaying line
K(MX)	Kurtosis of moment about ML-axis
M(MX)	Mean moment about ML-axis
STD(MX)	Standard deviation of moment about ML-axis
ZCR(Y)	Zero crossing rate over AP-axis
ZCR(VY)	Zero crossing rate of AP-velocity