The association between submaximal quadriceps force steadiness and the knee adduction moment during walking in patients with knee osteoarthritis.
J Orthop Sports Phys Ther
; 41(8): 592-9, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21765221
ABSTRACT
STUDY DESIGN:
Cross-sectional study.OBJECTIVES:
To investigate the relationship between quadriceps force steadiness and knee adduction moment during walking in patients with knee osteoarthritis (OA).BACKGROUND:
Studies have shown that quadriceps force steadiness is impaired in patients with knee OA. Furthermore, patients with knee OA, compared to healthy controls, have also demonstrated a significantly higher external knee adduction moment during walking. However, no studies have examined the relationship between quadriceps force steadiness and the peak knee adduction moment during walking in this population.METHODS:
Forty-one patients with knee OA (34 females and 7 males) were included in the study. Submaximal isometric quadriceps force steadiness was measured during a force target-tracking task. Peak knee adduction moments during ambulation were measured using a 3-dimensional gait analysis system, and knee pain was assessed using the Knee Injury and Osteoarthritis Outcome Score (KOOS) pain subscale and a visual analog scale.RESULTS:
Regression analyses showed that quadriceps force steadiness did not predict the peak knee adduction moment (adjusted R2 = 0.05, P = .41). Inclusion of covariates did not change the outcome.CONCLUSION:
No statistically significant association between submaximal isometric quadriceps force steadiness and peak knee external adduction moments during walking was found. It could be speculated that submaximal isometric quadriceps muscle force steadiness and knee joint loads during walking represent 2 distinctive pathways and may have independent influences on knee OA pathogenesis.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Caminhada
/
Osteoartrite do Joelho
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Músculo Quadríceps
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Contração Isométrica
/
Articulação do Joelho
Tipo de estudo:
Observational_studies
/
Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article