(a)

Temporal parameters	Parkinson's disease		Healthy controls		Statistical analyses
	Median	25′, 75′ perc.	Median	25′, 75′ perc.	P value
VPJ closure	0.08	0.02, 0.12	0.03	−0.02, 0.06	0.02
VPJ opening	0.76	0.64, 1.00	0.71	0.66, 0.78	0.31
VPJ duration	0.70	0.55, 0.94	0.66	0.64, 0.74	0.78
LV closure	0.13	0.10, 0.26	0.12	0.10, 0.20	0.58
LV opening	0.91	0.72, 0.98	0.84	0.78, 0.91	0.51
LV duration	0.69	0.60, 0.80	0.66	0.60, 0.78	0.78
UES closure	0.86	0.74, 1.14	0.79	0.74, 0.86	0.13
GPJo-LV closure Δt (sec)	0.13	0.10, 0.26	0.12	0.10, 0.20	0.58