Abbreviation	Meaning
AOR	Angle of muscle reaction (i.e., spastic muscle activation onset)
BoNT-A	Botulinum toxin A
CI	Confidence interval
EMG	Electromyogram
ICC	Intraclass correlation
IMU	Inertia measuring unit
MTS	Modified Tardieu Scale
V1	Slow passive movement during the MTS
V3	Fast passive movement during the MTS
Δt	Time delay between spastic muscle activation onset (AOR) and maximum foot angular velocity (s)
ωmax	Maximum foot angular velocity (°/s)
θ	Maximum dorsiflexion angle (°)
θ@max	Angle at maximum angular velocity (°)
Δθ	Difference between θ and θ@max (°)