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Titre : | Predictive and Reactive Grip Force Responses to Rapid Load Increases in People With Multiple Sclerosis (2017) |
Auteurs : | Kathrin Allgöwer ; Claudia Kern ; Joachim Hermsdörfer |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (2017/3, 2017) |
Article en page(s) : | pp. 525-533 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Rééducation et réadaptation ; Sclérose en plaques |
Mots-clés: | Hand strength ; Force de préhension manuelle ; Motor skills ; Aptitudes motrices ; Multiple sclerosis |
Résumé : |
Objectives To determine the effects of multiple sclerosis (MS) on predictive and reactive grip force control in a catching task and on clinical tests of hand function. Design Case-control study with matched-pairs control group. Setting University prevention and rehabilitation center. Participants Participants (N=30) consisted of people with multiple sclerosis (PwMS) (n=15) and healthy controls (n=15), matched for sex, age, and hand dominance. Interventions Not applicable. Main Outcome Measures Performance on the Expanded Disability Status Scale (EDSS), Nine-Hole Peg Test (9-HPT), Jebsen-Taylor Hand Function Test (JTHFT), and 2-point discrimination (2PD) was evaluated. To analyze grip force control, blindfolded subjects held a receptacle equipped with grip force and acceleration sensors in their hand. In a catching task, a weight was dropped from (1) the experimenter's hand unexpectedly into the receptacle (reactive force control); and (2) from the subject's opposite hand (predictive force control). Grip forces and time lags were analyzed. Results PwMS (mean EDSS + SD, 4.2+1.86) had impairments in the 9-HPT and JTHFT (P<.001 the did not differ significantly between pwms and controls. during reactive force control task showed higher grip forces immediately after impact a significant prolongation of time from increase until reaching peak controls predictive p>.1). Conclusions Exaggerated grip force responses and alterations of timing after an unpredictable perturbation, combined with preserved grip force control during predictable conditions, is a characteristic pattern of fine motor control deficits in MS. Measures of reactive grip force responses may be used to complement neurologic assessments. Further studies exploring the usefulness of these measures should be performed in a broader community of PwMS. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S0003999316309571 |