Table 2.  Means (±SD) of all variables.

Variable

Group

Pre-Fatigue

Fatigue

Pkf 

2.31 (.50)

1.81 (.75)

(multiple of BW)

2.71 (.94)

2.36 (1.06)

 
+

2.50 (.80)

2.06 (.93)

KFlexCon

14.4 (7.3)

17.0 (15.0)

(Degrees)

17.7 (5.7)

16.9 (11.3)

 
+

15.9 (6.7)

16.9 (13.2)

KFlexROM

60.5 (8.7)

57.3 (6.6)

(Degrees)

57.5 (7.6)

62.5 (8.3)

 
+

59.1 (8.2)

59.7 (7.7)

FPmax

5.6 (10.5)

4.3 (10.3)

(Degrees)

-2.6 (15.0) a

-1.1 (16.5) a

 
+

1.8 (13.2)

1.8 (13.5)

FP30

5.4 (5.0)

4.8 (4.9)

(Degrees)

1.9 (5.8)

1.3 (5.3)

 
+

3.8 (5.6)

3.2 (5.3)

FProm30

3.6 (2.5)

3.5  (4.0)

(Degrees)

.4 (3.2)

1.5 (3..0)

 
+

2.1 (3.2)

2.6 (3.6)

FPrommax

3.7 (7.5)

2.96 (8.46)

(Degrees)

-4.2 (12.8)a

-.8 (14.2) a

 
+

.1 (10.9)

1.2 (11.4)

VL

73.5 (7.7)

73.1 (18.7)

(RMS) (%*)

77.1 (7.4)

87.1 (33.2)

 
+

75.2 (7.6)

79.6 (26.8)

VM 

77.5 (6.8)

73.8 (16.3)

(RMS) (%*)

74.1 (9.4)

71.9 (20.3)

 
+

75.9 (8.1)

72.9 (17.9)

MH

71.6 (12.4)

72.8 (30.8)

(RMS) (%*)

70.6 (9.8)

69.1 (28.3)

 
+

71.2 (11.1)

71.1 (29.1)

LH

70.4 (14.0)

78.9 (43.1)

(RMS) (%*)

77.3 (36.2)

89.9 (36.2)

 
+

73.6 (12.1)

84.0 (39.7)

GA

70.8 (7.2)

73.1 (15.1)

(RMS) (%*)

70.2 (7.2)

78.1 (31.3)

 
+

70.6 (7.1)

75.4 (23.6)

a  negative value indicates valgus; positive value indicates varus. Pkf = Peak vertical ground reaction force, BW = body weight, KFlexCon = Knee flexion angle at initial contact, FPmax = Frontal plane knee angle at maximum knee flexion, FP30 = Maximum frontal plane angle at 30 degrees of knee flexion, FProm30 = Knee range of motion in the frontal plane from 0 degrees of knee flexion to 30 degrees of knee flexion, FPrommax = Knee range of motion in the frontal plane from 0 degrees of knee flexion to maximum knee flexion, VL = vastus lateralis muscle, VM = vastus medialis muscle, MH = medial hamstring muscles, LH = lateral hamstring muscle, GA = gastrocnemius muscle (Lateral head), * = RMS was normalized to a percent of the greatest RMS value, for that muscle, during the pre-fatigue condition.