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Table 2 95% confidence intervals for lower extremity ranges of motion – calculated using the constrained-kinematic model with full and simplified marker sets – during walking at increasing speeds

From: The impact of thigh and shank marker quantity on lower extremity kinematics using a constrained model

 

slow (0.9 m/s)

moderate (1.2 m/s)

fast (1.5 m/s)

hip flexion

(37.2–40.4) | (38.6–43.1)

(41.2–44.2)s | (42.8–47.0)s

(44.7–49.7)sm | (46.7–53.2)sm

knee flexion

(58.7–67.5) | (56.8–66.2)

(61.3–69.8)s | (59.4–68.4)s

(61.7–68.5) | (60.7–67.4)s

ankle dorsiflexion

(20.3–24.5) | (20.9–25.5)

(23.3–28.8)s | (24.2–29.5)s

(26.3–32.0)sm | (26.7–32.5)sm

hip adduction

(15.2–18.7) | (14.6–18.2)

(16.5–21.0)s | (15.6–20.0)s

(18.0–22.7)sm | (16.3–21.2)s

hip rotation

(7.9–12.0) | (11.1–16.0)

(10.5–14.1)s | (13.5–18.7)s

(11.4–16.2)sm | (14.9–20.1)s

  1. 95% confidence intervals for joint range of motion for the full and simplified marker sets are reported for each joint coordinate and walking speed (full | simplified). sincreased range of motion compared to slow speed. m increased range of motion compared to medium speed. p < 0.05