| Titre : | Influence of Contraction Type, Speed, and Joint Angle on Ankle Muscle Weakness in Parkinson's Disease : Implications for Rehabilitation (2012) |
| Auteurs : | Marco Y.C. Pang ; Margaret K. Mak |
| Type de document : | Article |
| Dans : | Archives of Physical Medicine and Rehabilitation (2012/12, 2012) |
| Article en page(s) : | pp. 2352-2359 |
| Langues: | Anglais |
| Descripteurs : |
HE Vinci Exercice physique ; Force musculaire ; Maladie de Parkinson ; Rééducation et réadaptation |
| Résumé : |
"Objective To compare the ankle muscle strength and torque-angle relationship between individuals with Parkinson's disease (PD) and participants without impairments. Design Cross-sectional, exploratory study. Setting Motor control laboratory in a university. Participants Convenience sample of community-dwelling individuals with PD (n=59) recruited from a PD self-help group and age-matched participants without impairments (n=37) recruited from community older adult centers. Interventions Not applicable. Main Outcome Measure Peak torque and angle-torque profile during concentric and eccentric contraction of ankle dorsiflexors and plantarflexors at 2 different angular speeds (45 and 90°/s). Results The PD group displayed lower muscle peak torque values than participants without impairments in all test conditions. Generally, concentric strength was more compromised, with a greater between-group difference (Cohen d=1.29–1.60) than eccentric strength (Cohen d=.81–1.37). Significant group by angular speed interaction was observed in ankle plantarflexion concentric peak torque (P<.001 indicating that muscle weakness was more pronounced when the angular speed increased. group by joint angle interaction in concentric contraction of ankle plantarflexors at also significant revealing between-group difference torque values became increasingly moving toward end range plantarflexion. this exaggerated plantarflexor significantly correlated with clinical balance measures> Conclusions Muscle weakness in PD is influenced by contraction type, angular speed, and joint range. Exaggerated weakness is found in concentric contraction of ankle plantarflexors, particularly when the angular speed is high and the muscle is in shortened lengths." |
| Disponible en ligne : | Oui |
| En ligne : | http://www.archives-pmr.org/article/S0003-9993(12)00409-1/abstract |
Bibliothèques HE Vinci
