Table 2.

Mechanical energy expenditures (MEEs) (J/kg) of the ankle, knee and hip during the Initial contact and the Peak knee flexion of front and right lunging (Mean ± SD) for each transfer condition (concentric transfer, eccentric transfer, and no transfer)

Variable		Initial contact				Peak knee flexion
		Professionals		Amateur	p-Value†	Professionals	Amateur	p-Value
		Mean ± SD				Mean ± SD
Ankle	MEEC	3.47 ± 1.64	3.34 ± 1.51		0.249	4.00 ± 2.54	3.21 ± 1.76	0.433
	MEEE	3.15 ± 2.22	3.19 ± 1.62		0.161	4.49 ± 2.89	2.35 ± 1.08	< 0.042*
	MEEN	3.68 ± 0.91	2.54 ± 0.37		< 0.003*	3.47 ± 2.19	3.34 ± 2.07	0.495
Knee	MEEC	2.32 ± 1.02	3.54 ± 1.22		< 0.026*	3.38 ± 2.01	3.42 ± 1.52	0.260
	MEEE	3.94 ± 0.63	2.59 ± 0.92		< 0.001*	4.23 ± 2.28	3.41 ± 1.06	0.318
	MEEN	3.37 ± 1.97	2.99 ± 1.37		0.624	2.48 ± 1.27	2.93 ± 1.33	0.449
Hip	MEEC	4.95 ± 2.06	3.86 ± 0.64		0.138	3.65 ± 2.68	5.74 ± 2.19	0.072
	MEEE	3.64 ± 1.88	4.74 ± 2.09		0.232	3.61 ± 2.25	3.18 ± 1.02	0.585
	MEEN	3.38 ± 0.47	4.25 ± 0.54		< 0.001*	4.22 ± 2.93	2.96 ± 0.26	0.193

Note: *statistically significant differences between the professionals and Amateur groups. **P-value < 0.05 is considered to be statistically significant; MEC always zero for no-transfer conditions

Abbreviations: MEC_C, concentric energy transfer condition; MEC_E, eccentric energy transfer condition