Onset of quadriceps activation and torque variation during stair ascent in individuals with patellofemoral pain
Introduction: Studies have used surface electromyography (EMG) to understand motor recruitment in individuals with patellofemoral pain syndrome (PFPS); however, there is no consensus in the literature. Objective: To understand if, in addition to neuromuscular disorders, there are changes in rotation...
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| Veröffentlicht in: | Conscientiae saúde 2013-01, Vol.11 (4), p.642-650 |
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| creator | Kuriki, Heloyse Uliam Azevedo, Fábio Mícolis de Negrão Filho, Rúben De Faria Alves, Neri |
| description | Introduction: Studies have used surface electromyography (EMG) to understand motor recruitment in individuals with patellofemoral pain syndrome (PFPS); however, there is no consensus in the literature. Objective: To understand if, in addition to neuromuscular disorders, there are changes in rotational patterns in individuals with PFPS. Methods: Twenty-two control pain-free subjects and eleven subjects with PFPS were assessed during stair ascent with respect to the onset of muscle activation and percentage of torque variation (PTV). Result: The PFPS group showed previous activation of vastus lateralis (VL) (21.1 ± 58.1ms), while simultaneous activation was observed in the control group (2.8 ± 30.7ms, p=0.01). The groups also showed differences in relation to the PTV (p=0.02): the control group showed greater variation in torque (26.7 ± 35.3%) compared to the PFPS group (17.5 ± 35.9%). Conclusion: People with PFPS have prior activation of VL and lower tendency towards body rotation, which may suggest patellar lateralization. |
| doi_str_mv | 10.5585/conssaude.v11n4.3810 |
| format | Article |
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Objective: To understand if, in addition to neuromuscular disorders, there are changes in rotational patterns in individuals with PFPS. Methods: Twenty-two control pain-free subjects and eleven subjects with PFPS were assessed during stair ascent with respect to the onset of muscle activation and percentage of torque variation (PTV). Result: The PFPS group showed previous activation of vastus lateralis (VL) (21.1 ± 58.1ms), while simultaneous activation was observed in the control group (2.8 ± 30.7ms, p=0.01). The groups also showed differences in relation to the PTV (p=0.02): the control group showed greater variation in torque (26.7 ± 35.3%) compared to the PFPS group (17.5 ± 35.9%). Conclusion: People with PFPS have prior activation of VL and lower tendency towards body rotation, which may suggest patellar lateralization.</description><identifier>ISSN: 1677-1028</identifier><identifier>EISSN: 1983-9324</identifier><identifier>DOI: 10.5585/conssaude.v11n4.3810</identifier><language>eng</language><publisher>Sao Paulo: Universidade Nove de Julho (UNINOVE), ConScientiae Saúde</publisher><subject>Electromyography ; Knee ; Pain</subject><ispartof>Conscientiae saúde, 2013-01, Vol.11 (4), p.642-650</ispartof><rights>2012. This work is licensed under http://creativecommons.org/licenses/by-nc-sa/4.0/ (the “License”). 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however, there is no consensus in the literature. Objective: To understand if, in addition to neuromuscular disorders, there are changes in rotational patterns in individuals with PFPS. Methods: Twenty-two control pain-free subjects and eleven subjects with PFPS were assessed during stair ascent with respect to the onset of muscle activation and percentage of torque variation (PTV). Result: The PFPS group showed previous activation of vastus lateralis (VL) (21.1 ± 58.1ms), while simultaneous activation was observed in the control group (2.8 ± 30.7ms, p=0.01). The groups also showed differences in relation to the PTV (p=0.02): the control group showed greater variation in torque (26.7 ± 35.3%) compared to the PFPS group (17.5 ± 35.9%). Conclusion: People with PFPS have prior activation of VL and lower tendency towards body rotation, which may suggest patellar lateralization.</abstract><cop>Sao Paulo</cop><pub>Universidade Nove de Julho (UNINOVE), ConScientiae Saúde</pub><doi>10.5585/conssaude.v11n4.3810</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Electromyography Knee Pain |
| title | Onset of quadriceps activation and torque variation during stair ascent in individuals with patellofemoral pain |
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