The aim of this work was to investigate changes in motor performance and in the brain activation pattern during finger movements, following upper limb motor training in multiple sclerosis. Thirty people with multiple sclerosis with mild upper limb sensorimotor deficits were randomly allocated to one of two groups: the experimental group (n = 15) received an upper limb treatment based on voluntary task-oriented movements; the control group (n = 15) underwent passive mobilization of shoulder, elbow, wrist and fingers. All participants completed three treatment sessions per week for eight weeks. Before and after the intervention, all participants were evaluated for motor performance by means of Action Research Arm Test, Nine Hole Peg Test, and grip strength by a dynamometer, and for brain activations by functional magnetic resonance imaging during right finger opposition movements. Similar effects on motor performance were found in the two groups. A significant improvement with time was found in both groups at NHPT and in GRIP strength; a similar trend was found at ARAT. However, only the experimental group showed increased lateralization towards more normal brain activation following treatment, with activation clusters mainly located in the left brain hemisphere and right cerebellum. In conclusion, both active and passive interventions were effective in improving motor performance. However, only the treatment based on voluntary task-oriented movements could induce changes in brain activity that may have reflected skill acquisition by the right hand, reducing the activation of compensatory areas and decreasing brain resource demand.

Upper limb motor training based on task-oriented exercises induces functional brain reorganization in patients with multiple sclerosis

Bonzano L;Tacchino A;Mancardi GL;Bove M.
2019

Abstract

The aim of this work was to investigate changes in motor performance and in the brain activation pattern during finger movements, following upper limb motor training in multiple sclerosis. Thirty people with multiple sclerosis with mild upper limb sensorimotor deficits were randomly allocated to one of two groups: the experimental group (n = 15) received an upper limb treatment based on voluntary task-oriented movements; the control group (n = 15) underwent passive mobilization of shoulder, elbow, wrist and fingers. All participants completed three treatment sessions per week for eight weeks. Before and after the intervention, all participants were evaluated for motor performance by means of Action Research Arm Test, Nine Hole Peg Test, and grip strength by a dynamometer, and for brain activations by functional magnetic resonance imaging during right finger opposition movements. Similar effects on motor performance were found in the two groups. A significant improvement with time was found in both groups at NHPT and in GRIP strength; a similar trend was found at ARAT. However, only the experimental group showed increased lateralization towards more normal brain activation following treatment, with activation clusters mainly located in the left brain hemisphere and right cerebellum. In conclusion, both active and passive interventions were effective in improving motor performance. However, only the treatment based on voluntary task-oriented movements could induce changes in brain activity that may have reflected skill acquisition by the right hand, reducing the activation of compensatory areas and decreasing brain resource demand.
File in questo prodotto:
File Dimensione Formato  
55_Bonzano et al Neuroscience 2019.pdf

accesso chiuso

Tipologia: Documento in versione editoriale
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11567/953632
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact