Kinematic, kinetic and neuromuscular analysis of predisposing factors related to anterior cruciate ligament injury in young women escrito por Ortiz, Alexis, Ph.D., Texas Woman's University, 2006, 147 páginas; AAT 3239687
Resumen
Several predisposing factors have been identified for increased lower extremity injuries in women athletes as compared to men. Analyses of these predisposing factors are conducted by the study of kinematic, kinetic and neuromuscular activity during functional tasks.
The three purposes of this investigation were: (1) to determine the reliability and measurement error of hip and knee joint angles and ground reaction forces assessed during two single-legged landing tasks performed by 15 healthy, non-injured women; (2) to assess the effects of fatigue in 15 healthy, non-injured women by kinematic and kinetic analysis as well as lower extremity electromyography during two single-legged landing tasks; and (3) to compare hip and knee kinematics, kinetics and electromyography between groups of 15 healthy, non-injured women and 13 women who had anterior cruciate ligament reconstruction more than twelve months prior to testing.
The data acquisition system was comprised of 4-5 digital cameras time-synchronized to force plates and telemetry electromyography. All participants performed a warm-up protocol, practice trials, and the single-legged drop jump and single-legged up-down hop tasks after consenting to participation.
The results of the first study showed that five trials of the single-legged drop jump and a single trial of the up-down hop task are necessary for obtaining reliable measures for hip and knee joint angles. In the fatigue study, peak knee joint flexion was the only variable significantly different between non-fatigued and fatigued conditions. The results of the fatigue study indicated that either the fatigue protocol used was not sufficient to produce the necessary fatigue or that the tasks tested do not represent the fatigue-related alterations in landing mechanics seen in sports activities. When landing mechanics were compared between healthy, non-injured women and women with ACL reconstruction, the women with ACL reconstruction presented several deficits in landing mechanics even years after their surgical reconstruction. However, these women with ACL reconstruction also presented some compensatory strategies that allow them to perform both tasks successfully.
Índice (detalles del documento)
Director de tesis: Olson, Sharon
Universidad: Texas Woman's University
Lugar de universidad: United States -- Texas
Palabra(s) clav(es): Neuromuscular, Anterior cruciate ligament, Women, Knee injuries
Fuente: DAI-B 67/10, Apr 2007
Tipo de fuente: Dissertation
Materias: Rehabilitation, Therapy
Número de la publicación: AAT 3239687
ISBN: 9780542939280
URL del documento: http://proquest.umi.com/pqdweb?did=1251840031&sid=2&Fmt=2&cl
ientId=45091&RQT=309&VName=PQD
Código de documento de ProQuest: 1251840031
Bases de datos seleccionadas: Dissertations & Theses
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