Table 2. Number of subjects scoring an error for each factor . Male (N=1707) Female (N=1046) Factor N % N % Factor 1 Poor Sagittal Flexion – Stance 559 32.8% 448 42.6% Factor 2 Valgus Knee & Feet Too Wide 428 25.1% 386 36.7% Factor 3 Toes Out & Knees Flexed 503 29.5% 154 14.6% Factor 4 Heelstrike & Uneven Footstrike 751 44.1% 273 26.0% Factor 5 Poor Sagittal Flexion – Landing 582 34.1% 472 44.9% Factors generated from factor analysis loading. For items 1-15, a positive score was defined as an Error on at least 2 of 3 trials. For items 16 & 17, a positive score was defined as Average on at least 2 of 3 trials or Poor/ Stiff on at least 1 of 3 trials.