Table 3.

Correlations between sNHE expression and sperm motility parameter values (n = 129)

Parameters	Correlation coefficients	P value
VSL	0.383	<0.001
VAP	0.394	<0.001
BCF	0.364	<0.001
ALH	0.395	<0.001
LIN	−0.306	<0.001
VCL	0.365	<0.001
STR	0.347	<0.001

Correlations of VSL, VAP, BCF, ALH, and LIN were tested by Pearson’s correlation analysis; the parameters of VSL and STR were tested by Spearman’s correlation analysis

VSL straight line velocity, VAP average path velocity, BCF beat cross frequency, ALH amplitude of lateral head displacement, LIN linearity of progression, VCL,curvilinear velocity, STR path straightness