Assessment of Force Production in Parkinson’s Disease Subtypes

International Journal of Environmental Research and Public Health

卷:18

Paulo Cezar Rocha dos Santos¹  Marcelo Pinto Pereira¹  Juliana Lahr¹  Lilian Teresa Bucken Gobbi¹  Paulo Henrique Silva Pelicioni² 

[1] Posture and Locomotion Studies Laboratory, Universidade Estadual Paulista (UNESP), Rio Claro 13506-900, Brazil;

[2] School of Physiotherapy, Division of Health Sciences, University of Otago, Dunedin 9016, New Zealand;

关键词: Parkinson’s disease;    subtypes;    muscle power;    force production;   

DOI  :  10.3390/ijerph181910044

来源: DOAJ

【 摘 要 】

Muscle weakness is a secondary motor symptom of Parkinson’s disease (PD), especially in the subtype characterized by postural instability and gait difficulty (PIGD). Since the PIGD subtype also presents worse bradykinesia, we hypothesized that it also shows a decreased rate of force development, which is linked to an increased risk of falling in PD. Therefore, we investigated the effects of PD and PD subtypes on a force production profile and correlated the force production outcomes with clinical symptoms for each PD subtype. We assessed three groups of participants: 14 healthy older adults (OA), 10 people with PD composing the PIGD group, and 14 people with PD composing the tremor-dominant group. Three knee extension maximum voluntary isometric contractions were performed in a leg extension machine equipped with a load cell to assess the force production. The outcome measures were: peak force and rate of force development (RFD) at 50 ms (RFD50), 100 ms (RFD100), and 200 ms (RFD200). We observed lower peak force, RFD50, RFD100, and RFD200 in people with PD, regardless of subtypes, compared with the OA group (p < 0.05 for all comparisons). Together, our results indicated that PD affects the capacity to produce maximal and rapid force. Therefore, future interventions should consider rehabilitation programs for people with PD based on muscle power and fast-force production, and consequently reduce the likelihood of people with PD falling from balance-related events, such as from an unsuccessful attempt to avoid a tripping hazard or a poor and slower stepping response.

【 授权许可】

Unknown