People With Patellofemoral Pain Have Bilateral Deficits in Physical Performance Regardless of Pain Laterality.

Autor:	Waiteman, Marina C., Briani, Ronaldo V., Lopes, Helder S., Maiolini Ducatti, Matheus H., da Silva, Gleison G.M., Bazett-Jones, David M., de Azevedo, Fábio M.
Předmět:	CROSS-sectional method REPEATED measures design REFERENCE values LEG RESEARCH funding FUNCTIONAL assessment QUESTIONNAIRES ANALYSIS of covariance CHI-squared test MUSCLE strength ANALYSIS of variance PLICA syndrome BODY movement CEREBRAL dominance DATA analysis software
Zdroj:	Journal of Athletic Training (Allen Press); Nov2024, Vol. 59 Issue 11, p1110-1117, 8p
Abstrakt:	People with patellofemoral pain (PFP) may have lower performance during the forward step-down and single-leg hop with their painful (unilateral complaints) or most painful (bilateral complaints) limb when compared with pain-free controls. However, no authors have investigated the appropriateness of using the pain-free or less painful limb as a reference standard in clinical practice or whether deficits might be present depending on the laterality of pain. To compare performance scores and proportion of side-to-side limb symmetry during the forward step-down and single-leg hop tests among people with unilateral and bilateral PFP and pain-free controls. Cross-sectional study. Laboratory. Fifty-two young adults (18–35 years old) with unilateral PFP, 72 with bilateral PFP, and 76 controls. Group × limb interactions on performance during the step-down (repetitions) and single-leg hop (distance [cm] normalized by the limb length) tests were investigated using a repeated-measures analysis of covariance controlling for sex. Pairwise comparisons were interpreted using effect sizes. A χ2 test was used to compare the proportion of symmetry/asymmetry (cutoff point of ≥90% for symmetry indices) across groups and tests. Main effects for groups (small to medium effects) but not limbs indicated lower performance of both limbs of individuals with unilateral and bilateral PFP than controls during forward step-down and single-leg hop tests. No significant differences for the proportion of symmetry/asymmetry were identified across groups (P ≥.05), which further suggests an impaired physical performance of the contralateral limb. Our results indicate bilateral deficits in the physical performance of people with unilateral and bilateral PFP when compared with pain-free controls during the forward step-down and single-leg hop tests. Limb symmetry indices greater than 90% should be interpreted with caution, as they may overstate physical performance by not assuming bilateral deficits. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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