Correlation analysis of national elite Chinese male table tennis players’ shoulder proprioception and muscle strength

Table 7 Comparison of the Internal and external rotation’s absolute error, constant error and variable error of the racket-holding and the non-racket-holding hand

	External rotation AE	External rotation CE	External rotation VE	Internal rotation AE	Internal rotation CE	Internal rotation VE
Z value	-0.947	-1.244	-0.987	-0.906	-3.991	-3.138
P value	0.355	0.221	0.327	0.369	< 0.01a	< 0.01a

^aP < 0.01, the internal rotation constant error, variable error of the racket-holding hand vs that of the non-racket-holding hand.

AE: Absolute error; CE: Constant error; VE: Variable error.