Physical function in hip osteoarthritis : Relationship to isometric knee extensor steadiness
Deutscher übersetzter Titel: | Körperliche Funktionsfähigkeit bei Hüftosteoarthritis : Verhältnis zu isometrischer Stabilität der Knieextensoren |
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Autor: | Pua, Yong-Hao; Clark, Ross A.; Bryant, Adam L. |
Erschienen in: | Archives of physical medicine and rehabilitation |
Veröffentlicht: | 91 (2010), 7, S. 1110-1116, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0003-9993, 1532-821X |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201012009135 |
Quelle: | BISp |
Abstract
Objective: To evaluate, in a community hip osteoarthritis sample, the cross-sectional associations of isometric strength and steadiness of the knee extensors and their interaction with physical performance measures of physical function. Design: Cross-sectional. Setting: Human movement laboratory of a university. Participants: Sixty-seven adults (27 men and 40 women; age, 61 ± 10y) with radiographically confirmed symptomatic hip osteoarthritis. Interventions: Not applicable. Main Outcome Measures: Participants performed isometric knee extensor steadiness and strength testing on a dynamometer. Physical function was assessed by using the habitual timed walk test and the self- and fast-paced stair-climbing tests. Results: In the hierarchical regression models, although there were clear main effects of knee extensor steadiness on fast-paced stair performance, greater knee steadiness predictively associated with faster stair-climbing performance particularly in individuals with high knee extensor strength. In contrast, knee extensor steadiness was not related to gait speed regardless of knee extensor strength levels. Conclusions: In patients with hip OA, knee extensor steadiness was positively associated with stair-climbing performance, particularly in those with high levels of knee extensor strength. These findings are of importance in developing intervention strategies, but they call for further study. Verf.-Referat