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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: Dev Med Child Neurol. 2009 Apr 21;51(10):800–806. doi: 10.1111/j.1469-8749.2009.03307.x

Table III.

Intrasession reliability coefficients

ICC (3,k)a
Typically developing Cerebral palsy
RF cross-sectional area, cm2 0.99 (0.99–1.00) 0.99 (0.98–1.00)
RF muscle thickness, cm 0.98 (0.94–0.99) 0.99 (0.98–1.00)
RF fascicle length, cm 0.98 (0.95–0.99) 0.96 (0.91–0.98)
RF fascicle angle, ° 0.95 (0.78–0.99) 0.97 (0.93–0.99)
VL muscle thickness, cm 0.99 (0.97–1.00) 0.99 (0.97–0.99)
VL fascicle length, cm 0.88 (0.68–0.96) 0.93 (0.84–0.97)
VL fascicle angle, ° 0.96 (0.88–0.99) 0.97 (0.93–0.99)

Data are intraclass correlation coefficients (ICCs) with 95% confidence intervals.

a

ICC model (3,2) used for fascicle length and angles as average of two measurements; ICC model (3,1) used for cross-sectional area and muscle-thickness measurements. RF, rectus femoris; VL, vastus lateralis.