Table 3. Factor structure of knee extensor isokinetic assessment data disclosed by exploratory factor analysis of the 2 subsamples obtained by means of the "split-sample" method.

	Factors in random sample 1						Factors in random sample 2
Variables	Torque Generation Capacity	Variation in Torque Generation Capacity	Movement Deceleration Capacity	Mechanical/ Physiological Factors of Torque Generation	Acceleration Capacity	Communality	Torque Generation Capacity	Variation in Torque Generation Capacity	Movement Deceleration Capacity	Mechanical/ Physiological Factors of Torque Generation	Acceleration Capacity	Communality
Maximum Work	0.983	0.041	–0.293	–0.052	0.030	0.974	0.965	0.139	0.047	–0.055	0.022	0.957
Total Work	0.988	0.008	0.056	0.004	–0.006	0.979	0.917	0.045	0.138	0.03	–0.004	0.863
Work Last Third	0.942	0.203	0.108	–0.129	0.021	0.957	0.926	–0.154	0.049	–0.188	0.04	0.920
Work First Third	0.956	–0.199	0.062	0.049	–0.002	0.960	0.899	0.349	0.124	0.017	–0.036	0.947
Peak Torque	0.905	0.041	–0.293	–0.052	0.030	0.911	0.866	–0.167	–0.303	–0.059	0.051	0.875
Average Peak Torque	0.885	0.115	–0.287	–0.057	–0.006	0.883	0.838	–0.243	–0.32	–0.066	0.046	0.870
Work Fatigue Percentage	–0.064	–0.811	–0.104	0.353	–0.065	0.801	–0.141	0.812	0.126	0.349	–0.102	0.828
Maximum Work Repetition Number	–0.012	0.816	–0.127	0.218	–0.137	0.747	–0.101	–0.886	–0.056	0.150	–0.110	0.833
Deceleration Time	–0.050	–0.025	0.963	–0.020	–0.051	0.934	–0.008	0.115	0.949	–0.013	0.100	0.925
Angle of Peak Torque	–0.064	–0.031	–0.009	0.950	0.027	0.908	–0.085	0.056	–0.014	0.967	–0.063	0.949
Acceleration Time	0.017	–0.065	–0.052	0.022	0.989	0.987	0.031	0.027	0.095	–0.068	0.988	0.991
Percentage of Explained Variance (%)	48.7%	13.0%	10.5%	10.0%	9.2%		44.8%	15.6%	10.6%	10.3%	9.3%