Table 7.

Papers about rigidity, arms swing and leg agility analysis.

References	Symptom	Tech	Sensors place	Rec. freq	Experimental design	Subjects	Feature extracted	Analysis / classifiers	Classifier performance or findings
Rissanen et al., 2009	RIGIDITY	ACC, EMG	Wrists	1,000 Hz	To flex and extend both the elbows vertically and freely in 2-s cycles with the palms up (1 s flexion and 1 s extension)	49 PwPD, 59 HC	%REC, sample entropy, power of ACC, max power of all wavelet coefficients	t-Test, KW; Spearman correlation	Correlation (p < 0.01, R = −0.443) between the first PCs and total UPDRS motor scores in flexion. 73% sens., 82% spec. for flexion, 80% sens., 87% spec. for extension movements