Analysis of the center of pressure displacement, ground reaction force and muscular activity during step exercises

Saad, Marcelo Camargo; Felício, Lilian Ramiro; Masullo, Catia de Lourdes; Riberto, Marcelo; Bevilaqua-Grossi, Débora

doi:10.1016/j.jelekin.2011.07.014

Cited by 28 publications

(38 citation statements)

References 42 publications

(38 reference statements)

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“…It is important to note that the PFPS subjects failed to increase their GM activity at the same knee flexion angle that they carried out the greatest excursion of contralateral pelvic drop, hip adduction, and knee abduction, when compared with the confrol group. Our results are in agreement with a previous study (34) that also found decreased GM activation in PFPS subjects during a stepping task compared with controls but in confrast with others that reported no difference between groups (28,29,35,41). Differences in the methodology used to assess GM activation may have accounted for the different results among studies.…”

Section: Discussionsupporting

confidence: 92%

“…Previous studies have reported diminished hip abductor sfrength in sedentary individuals and female athletes with PFPS when compared with pain-free confrols (6,20,24), but no study compared isometric hip abductor torque between males and females with PFPS. Previous studies have evaluated the magnitude of gluteus médius (GM) activation during ftinctional activities in subjects with PFPS as compared with the controls (28,29,34,35,41). However, the studies cited only evaluated the overall activity ofthe GM or its activation in the stance phase during weight-bearing activities.…”

mentioning

confidence: 99%

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Frontal Plane Biomechanics in Males and Females with and without Patellofemoral Pain

Nakagawa

Moriya

Maciel

et al. 2012

Medicine &Amp; Science in Sports &Amp; Exercise

111

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Females presented with altered frontal plane biomechanics that may predispose them to knee injury. PFPS subjects showed frontal plane biomechanics that could increase the lateral patellofemoral joint stress at all the angles evaluated and could increase even more from 45° of knee flexion in the downward phase until the end of the maneuver. Hip abductor strengthening and motor control training should be considered when treating females with PFPS.

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Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 99%

Frontal Plane Biomechanics in Males and Females with and without Patellofemoral Pain

Nakagawa

Moriya

Maciel

et al. 2012

Medicine &Amp; Science in Sports &Amp; Exercise

111

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“…Similarly, Saad [30] observed major total displacement of the COP and greater instability during dynamic activity in PFP subjects; however, we believe that it may occur as a result of the influence of the medial-lateral oscillation over the total stability. The total COP variable is calculated based on the displacement anteriorposterior and medial-lateral directions of the COP, and the anteriorposterior was similar in both groups.…”

Section: Dynamic Postural Stabilitysupporting

confidence: 49%

Dynamic postural stability and muscle strength in patellofemoral pain: Is there a correlation?

et al. 2016

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“…Five studies31 35 37 38 40 evaluated muscle activation levels (peak or average/linear envelope) for GMed during functional tasks, and two evaluated GMax (see figure 4). Only one variable was found to significantly differ, with limited evidence indicating increased average GMax activity during stair descent (one HQ study35), with a medium ES (0.80, 0.16 to 1.44).…”

Section: Resultsmentioning

confidence: 99%

Gluteal muscle activity and patellofemoral pain syndrome: a systematic review

et al. 2012

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Objective There is growing evidence to support the association of gluteal muscle strength deficits in individuals with patellofemoral pain syndrome (PFPS) and the effectiveness of gluteal strengthening when treating PFPS. In additiona, an impressive body of work evaluating gluteal electromyography (EMG) has recently emerged, further supporting the importance of gluteal muscle function in PFPS. This systematic review synthesises these EMG findings in order to better understand the role of gluteal muscle activity in the aetiology, presentation and management of PFPS. Methods MEDLINE, EMBASE, CINAHL, Web of Knowledge and Google Scholar databases were searched in September 2011 for prospective and case-control studies evaluating the association of gluteal EMG with PFPS. Two independent reviewers assessed each paper for inclusion and quality. Means and SDs were extracted from each included study to allow effect size calculations and comparison of results. Results Ten case-control, but no prospective studies were identified. Moderate-to-strong evidence indicates gluteus medius (GMed) activity is delayed and of shorter duration during stair negotiation in PFPS sufferers. In addition, limited evidence indicates GMed activity is delayed and of shorter duration during running, and gluteus maximus (GMax) activity is increased during stair descent. Conclusions Delayed and shorter duration of GMed EMG may indicate impaired ability to control frontal and transverse plane hip motion. Further research evaluating the value of gluteal muscle activity screening in identifying individuals most likely to develop PFPS, and the effectiveness of interventions targeting changes to gluteal muscle activation patterns is needed.

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Analysis of the center of pressure displacement, ground reaction force and muscular activity during step exercises

Cited by 28 publications

References 42 publications

Frontal Plane Biomechanics in Males and Females with and without Patellofemoral Pain

Frontal Plane Biomechanics in Males and Females with and without Patellofemoral Pain

Dynamic postural stability and muscle strength in patellofemoral pain: Is there a correlation?

Gluteal muscle activity and patellofemoral pain syndrome: a systematic review

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