ANCOVA Analysis of covariance BMI Body mass index FOG Freezing of gait H&Y Hoehn & Yahr LEDD Levodopa equivalent daily dose MDS-UPDRS Movement disorder society-unified Parkinson's disease rating scale NFOG-Q New freezing of gait questionnaire NOFOG No freezing of gait PD-FUNC Parkinson's disease functional movement battery PWP Persons with Parkinson's disease SD Standard deviation 1 Introduction Freezing of gait (FOG) is one of the most disabling symptoms of Parkinson's disease (PD), often...