BAI	Beck Anxiety Inventory
CWT	Continuous Wavelet Transform
FAB	Frontal Assessment Battery
FFT	Fast Fourier Transform
FOG	Freezing of Gait
FOG-Q	Freezing of Gait Questionnaire
FOG+	patients with Freezing of Gait
FOG−	patients without Freezing of Gait
HAM-D	Hamilton Depression rating scale
H&Y	Hoehn and Yahr scale
IMU	Inertial Measurement Unit
LEDD	Levodopa Equivalent Daily Dose
LOSO	Leave-One-Subject-Out
LSB	Least Significant Bit
ML	Machine Learning
MAE	Mean Square Error
MDS-UPDRS	Movement Disorder Society—Unified Parkinson’s Disease Rating Scale
MMSE	Mini-Mental State Examination
ON	under dopaminergic therapy
OFF	not under dopaminergic therapy
PIGD	Postural Instability and Gait Difficulty
PD	Parkinson’s Disease
PDPs	Patients with Parkinson’s Disease
RMSE	Root Mean Square Error
TUG	Timed Up and GO