Table 3.

Intraclass correlation coefficients (ICC) with 95 % confident intervals (CI) and coefficients of variation (CV) for all variables of interest

	ICC (95 % CI)	CV
KE MVIC (Nm)	0.98 (0.95–0.99)	3.12
KF MVIC (Nm)	0.96 (0.93–0.98)	4.71
RTD (Nm/s)	0.90 (0.82–0.94)	7.44
VL activation (mV)	0.72 (0.54–0.84)	10.26
BF co-activation (%)	0.71 (0.52–0.83)	12.09
MDF (Hz)	0.52 (0.27–0.71)	4.60
Muscle thickness (mm)	0.90 (0.82–0.94)	2.04
Lf (mm)	0.80 (0.67–0.89)	3.31
Ɵ (°)	0.84 (0.73–0.91)	2.65
MAS (N/m)	0.85 (0.73–0.91)	9.82
MS (N/m)	0.75 (0.58–0.85)	3.22

KE knee extensors, KF knee flexors, MVIC maximal voluntary isometric contraction, RTD rate of torque development, VL vastus lateralis, BF biceps femoris, MDF median frequency, Lf fascicle length, Ɵ pennation angle, MAS musculo-articular stiffness, MS muscle stiffness