The effects of repetitive neck-muscle vibration on postural disturbances after a chronic stroke

Karim Jamal (1, 2) , Stéphanie Leplaideur (1, 3, 4) , Chloé Rousseau (1, 5) , Sébastien Cordillet (1) , Annelise Moulinet Raillon (1) , Simon Butet (1) , Armel Crétual (2) , Isabelle Bonan (1, 2)

1 Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Ponchaillou]
2 M2S - Laboratoire Mouvement Sport Santé
3 CMRRF - Centre Mutualiste de Rééducation et de Réadaptation Fonctionnelles de KERPAPE [Ploemeur]
4 Empenn - Neuroimagerie: méthodes et applications
5 CIC - Centre d'Investigation Clinique [Rennes]

Objective. - We aimed to test a repeated program of vibration sessions of the neck muscles (rNMV) on postural disturbances and spatial perception in patients with right (RBD) versus left (LBD) vascular brain damage. Methods. -Thirty-two chronic stroke patients (mean age 60.9 +/- 10 yrs and mean time since stroke 4.9 +/- 4 yrs), 16 RBD and 16 LBD, underwent a program of 10 sessions of NMV over two weeks. Posturography parameters (weight-bearing asymmetry (WBA), Xm, Ym, and surface), balance rating (Berg Balance Scale (BBS), Timed Up and Go (TUG)), space representation (subjective straight ahead (SSA), longitudinal body axis (LBA), subjective visual vertical (SW)), and post-stroke deficiencies (motricity index, sensitivity, and spasticity) were tested and the data analyzed by ANOVA or a linear rank-based model, depending on whether the data were normally distributed, with lesion side and time factor (D-15, D0, D15, D21, D45). Results. -The ANOVA revealed a significant interaction between lesion side and time for WBA (P< 0.0001) with a significant shift towards the paretic lower limb in the RBD patients only (P=0.0001), whereas there was no effect in the LBD patients (P=0.98). Neither group showed a significant modification of spatial representation. Nonetheless, there was a significant improvement in motricity (P=0.02), TUG (P=0.0005), and BBS (P< 0.0001) in both groups at the end of treatment and afterwards. Conclusions. - rNMV appeared to correct WBA in RBD patients only. This suggests that rNMV could be effective in treating sustainable imbalance due to spatial cognition disorders. (C) 2020 Elsevier Masson SAS. All rights reserved.

Mots clés: Neck muscle vibration; Postural asymmetry; Spatial representation; Stroke

Domaines: Sciences du Vivant [q-bio]

Karim Jamal, Stéphanie Leplaideur, Chloé Rousseau, Sébastien Cordillet, Annelise Moulinet Raillon, et al.. The effects of repetitive neck-muscle vibration on postural disturbances after a chronic stroke. Neurophysiologie Clinique = Clinical Neurophysiology, 2020, 50 (4), pp.269-278. ⟨10.1016/j.neucli.2020.01.005⟩. ⟨hal-02958924⟩