5 May 2019; Accepted: 24 June 2019; Published: 27 June 2019 Abstract: Hemiplegia is a neurological disorder that is often detected in children with cerebral palsy. Although many studies have investigated muscular activity in hemiplegic legs, few EMG-based findings focused on una ected limb. This study aimed to quantify the asymmetric behavior of lower-limb-muscle recruitment during walking in mild-hemiplegic children from surface-EMG and foot-floor contact features. sEMG signals from tibialis anterior (TA) and gastrocnemius lateralis and foot-floor contact data during walking were analyzed in 16 hemiplegic children classified as W1 according to Winter’ scale, and in 100 control children. Statistical gait analysis, a methodology achieving a statistical characterization of gait by averaging surface-EMG-based features, was performed. Results, achieved in hundreds of strides for each child, indicated that in the hemiplegic side with respect to the non-hemiplegic side, W1 children showed a statistically significant: decreased number of strides with normal foot-floor contact; decreased stance-phase length and initial-contact sub-phase; curtailed, less frequent TA activity in terminal swing and a lack of TA activity at heel-strike. The acknowledged impairment of anti-phase eccentric control of dorsiflexors was confirmed in the hemiplegic side, but not in the contralateral side. However, a modified foot-floor contact pattern is evinced also in the contralateral side, probably to make up for balance requirements.
EMG-Based Characterization of Walking Asymmetry in Children with Mild Hemiplegic Cerebral Palsy / Di Nardo, Francesco; Strazza, Annachiara; Mengarelli, Alessandro; Cardarelli, Stefano; Tigrini, Andrea; Verdini, Federica; Nascimbeni, Alberto; Agostini, Valentina; Knaflitz, Marco; Fioretti, Sandro. - In: BIOSENSORS. - ISSN 2079-6374. - ELETTRONICO. - 9:3(2019), p. 82.
|Titolo:||EMG-Based Characterization of Walking Asymmetry in Children with Mild Hemiplegic Cerebral Palsy|
|Data di pubblicazione:||2019|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/bios9030082|
|Appare nelle tipologie:||1.1 Articolo in rivista|