Table 1. The demographic and clinical characteristics of the participants.

	Early PD (PD-II)	Moderate PD (PD-III)	Healthy control (HC)
N	15	15	15
Age [years]	61.9±8.6	70.7±4.5	63.5±4.3
Body mass [kg]	75.7±9.0	75.1±15.0	70.2±7.9
Body height [cm]	170.4±6.4	168.6±5.4	167.3±4.3
UPDRS—III [pts]	10.5±3.4	28.9±5.4	-
H&Y stage	II	III	-
MMSE [pts]	28.1 ± 1.6	27.5 ± 2.5	29.0 ± 1.6

UPDRS—Unified Parkinson’s Disease Rating Scale, H&Y–Hoehn and Yahr Scale, MMSE—Mini Mental State Examination.