Table 2.

Tuck Jump Kappa Statistics

Phase of Jump	Criterion	Kappa Value (pre-PHV)	Kappa Value (post-PHV)
Knee and thigh motion	knee valgus	k = 0.78	k = 0.67
	not parallel	k = 0.34	k = 0.44
	not equal	k = 0.11	k = 0.29
Foot positioning during landing	not shoulder width	k = 0.52	k = 0.25
	not parallel	k = 0.62	k = 0.20
	unequal contact time	k = 0.04	k = 0.05
	high contact noise	k = 0.34	k = 0.43
Plyometric technique	pause between jumps	k = 0.65	k = 0.00
	declines in 10s	k = 0.33	k = 0.31
	excess flight motion	k = −0.06	k = 0.01