Dynamics of postural control in Parkinson patients with and without symptoms of freezing of gait

Comparison of upright balance in stroke, Parkinson and multiple sclerosis

“…Subjects with neurological disorders had smaller values of sample entropy compared to HS, in line with previous results reported in subjects with MS (39), PD (40) and ST (20). A novel finding of the present study was that the MS group showed lower entropy values with respect to PD and ST.…”

Postural control deficit during sit-to-walk in patients with Parkinson’s disease and freezing of gait

“…Indeed, a recent research [36] suggested that in institutionalized very old adults a lower variability in a postural strategy may improve balance ability. PD + FoG may not to have this compensatory balance control [37], showing instead larger limbs displacements produced by a deficit in postural regulation.…”

Recurrence Quantification Analysis at work: Quasi-periodicity based interpretation of gait force profiles for patients with Parkinson disease

“…In accordance with our findings, Pelykh et al . in 2015 said that lower entropy values show higher regularity in movement, and higher entropy values show ‘complexity’ and suggested that PD patients’ postural control reflects their rigidity and low adaptability, attesting to their heightened risk for fall injuries 69 . In this paper, we also show that the ‘complexity’ in movement, which leads to higher entropy, results from quasi-periodic fluctuations (not chaotic) in healthy gait.…”