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Step down tests are the tasks that most differentiate the kinematics of women with patellofemoral pain compared to asymptomatic controls.

Lopes Ferreira, C, Barton, GJ, Delgado Borges, L, Dos Anjos Rabelo, ND, Politti, F and Garcia Lucareli, PR (2019) Step down tests are the tasks that most differentiate the kinematics of women with patellofemoral pain compared to asymptomatic controls. Gait Posture, 72. pp. 129-134. ISSN 1879-2219

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Abstract

BACKGROUND: Studies evaluating kinematics lead to different conclusions, not all changes appear in all assessed tasks and in all subgroups of patients with patellofemoral pain (PFP). The inconsistencies between studies could be reduced if we knew which task separates patients best from healthy controls. RESEARCH QUESTION: Identify which functional task, between gait, forward step down (FSD), lateral step down (LSD), stair ascent and descent and propulsion and landing phase of the single leg hop test (SLHT), differentiates the three-dimensional kinematics of women with patellofemoral pain from asymptomatic women. METHODS: This cross-sectional study evaluated thirty-five PFP and thirty-five asymptomatic women during the execution of the following tasks: gait, FSD, LSD, stair ascent and descent and the propulsion and landing phase of single leg hop test. Frontal, sagittal and transverse plane angles of the trunk, pelvis and hip, frontal and sagittal plane angles of the knee, ankle dorsiflexion, foot progression angle and hindfoot eversion were analyzed through the Movement Deviation Profile (MDP). To compare the groups, the multivariate analysis with Bonferroni post hoc test were used, with a significance level of p < 0.01. To identify which task presented the most difference between the groups, the Z-score of the mean MDP was calculated. RESULTS: For all tasks, the groups presented significant differences. According to the Z-score, the groups got farther apart considering the MDP for each task in the following order: LSD (7.97), FSD (7.62), landing phase of SLHT (3.43), gait (2.85), propulsion phase of SLHT (1.64), descending stairs (1.63) and ascending stairs (1.00). SIGNIFICANCE: We suggest that step down tests should be included in the assessment of PFP patients, since these tests most differentiate the kinematics of women with and without PFP. Identifying the tasks with the highest sensitivity to detect the kinematic differences is expected to improve clinical decision-making.

Item Type: Article
Uncontrolled Keywords: 1103 Clinical Sciences, 1106 Human Movement and Sports Sciences, 0913 Mechanical Engineering
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sports & Exercise Sciences
Publisher: Elsevier
Related URLs:
Date Deposited: 02 Jul 2019 08:46
Last Modified: 02 Jul 2019 08:46
DOI or Identification number: 10.1016/j.gaitpost.2019.05.023
URI: http://researchonline.ljmu.ac.uk/id/eprint/10954

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