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Table 2 Two- and three-dimensional kinematic data (degrees) for the knee-over-foot and knee-medial-to-foot groups, and between groups.

From: Validity and inter-rater reliability of medio-lateral knee motion observed during a single-limb mini squat

Kinematic variables (degrees)

Knee-over-foot (n = 15)

Knee-medial-to-foot (n = 10)

Knee-over-foot vs knee-medial to foot

 
 

Mean (SE)

Mean (SE)

Mean difference (95% CI)

p-value

2-D

    

Peak tibial angle §

86.3 (0.4)

89.0 (0.7)

-2.7 (-4.2, -1.2)

0.001

Peak thigh angle §

81.2 (0.5)

77.4 (1.0)

3.8 (1.7, 5.9)

0.001

Peak knee varus-valgus*

-5.0 (0.8)

-11.6 (1.5)

6.6 (3.4, 9.7)

< 0.001

3-D

    

Peak hip rotation†

4.8 (1.8)

10.6 (2.1)

-5.8 (-11.6, -0.02)

0.049

Peak knee varus-valgus*

-5.0 (1.2)

-6.1 (1.8)

1.1 (-5.5, 3.2)

0.589

  1. * Negative value = valgus, positive value = varus
  2. † Negative value = external rotation, positive value = internal rotation
  3. § Angles reported relative to the horizontal, with lower values indicating the segment was more medially oriented at the knee