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Biomechanical factors associated with running injuries
T h e Intelligent K n e e Sleeve: A valid and reliable d e v i c e to c o m b a t ACL injuries B. Munro.1, J.Steele2 & G. Wallace 3 1CSIRO Textile And Fibre Technology 2Biomechanics Research Laboratory, University of Wollongong 3Intelligent Polymer Research Institute, University of Wollongong
Providing accurate audio feedback with respect to knee angle when landing from a jump may assist in reducing the incidence of non-contact anterior cruciate ligament (ACL) injuries. This study aimed to examine the validity and reproducibility of the Intelligent Knee Sleeve. Twelve subjects performed landings while wearing the knee sleeve on their dominant limb al two programmed knee angles. Kinetic data, collected (1000 Hz) using a force platform, and kinematic data, collected (200 Hz) using an optoelectronic motion analysis system described each subject's landing motion. Paired t-tests revealed that the knee sleeve was valid, in that the programmed angle (set using a goniometer) was equal to the angle at which the audio feedback tone was actually emitted (calculated using the kinematic data). The knee sleeve was also considered to be highly reliable with ICCs calculated from the knee angle at audio onset ranging from R1 = 0.903 to 0.988. It was concluded that the knee sleeve is a valid and reliable device that provides information about knee flexion angle when performing landing movements. A clinical trial can now be completed to determine if the knee sleeve can reduce the incidence and/or severity of non-contact ACL and other knee injuries.
B i o m e c h a n i c a l f a c t o r s a s s o c i a t e d w i t h running injuries A. Schache .1, P.Blanch2, D. Rath2, T. Wrigley3 & K. Bennell1 ~Centre For Sports Medicine Research & Education, The University Of Melbourne 2The Australian Institute Of Sport 3Victoria University Of Technology
This study aimed to identify anthropometric and biomechanical parameters of the lumbopelvic-hip complex related to running injuries. A group of runners (11 males; 11 females) who had sustained at least one injury in the previous twelve months attributable to running were compared to a group of runners (11 males; 9 females) who had been injury free for the previous twelve months. Groups were matched for running volume and number of training sessions conducted per week. Running trials were performed on a treadmill at 4.0m/s. Reflective markers were placed over anatomical landmarks of the thoraco-lumbar spine, pelvis and femur. 3D angular data of the lumbo-pelvic-hip complex during running were captured using a motion analysis system. None of the anthropometric (height, pelvic width, relative pelvic width, standing pelvic tilt, active knee extension, hip extension, hip internal and external rotation) or spatiotemporal (stride time, stride rate, stride length, stance and swing time, relative stance and swing time) parameters were significantly different between groups. The lumbar spine was more extended during early stance for injured subjects. No differences were evident for any other lumbar spine or pelvis angular parameters. Injured females displayed greater amplitude of hip adduction-abduction whilst injured males displayed increased peak hip flexion.
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Providing accurate audio feedback with respect to knee angle when landing from a jump may assist in reducing the incidence of non-contact anterior cruciate ligament (ACL) injuries. This study aimed to examine the validity and reproducibility of the Intelligent Knee Sleeve. Twelve subjects performed landings while wearing the knee sleeve on their dominant limb al two programmed knee angles. Kinetic data, collected (1000 Hz) using a force platform, and kinematic data, collected (200 Hz) using an optoelectronic motion analysis system described each subject's landing motion. Paired t-tests revealed that the knee sleeve was valid, in that the programmed angle (set using a goniometer) was equal to the angle at which the audio feedback tone was actually emitted (calculated using the kinematic data). The knee sleeve was also considered to be highly reliable with ICCs calculated from the knee angle at audio onset ranging from R1 = 0.903 to 0.988. It was concluded that the knee sleeve is a valid and reliable device that provides information about knee flexion angle when performing landing movements. A clinical trial can now be completed to determine if the knee sleeve can reduce the incidence and/or severity of non-contact ACL and other knee injuries.
B i o m e c h a n i c a l f a c t o r s a s s o c i a t e d w i t h running injuries A. Schache .1, P.Blanch2, D. Rath2, T. Wrigley3 & K. Bennell1 ~Centre For Sports Medicine Research & Education, The University Of Melbourne 2The Australian Institute Of Sport 3Victoria University Of Technology
This study aimed to identify anthropometric and biomechanical parameters of the lumbopelvic-hip complex related to running injuries. A group of runners (11 males; 11 females) who had sustained at least one injury in the previous twelve months attributable to running were compared to a group of runners (11 males; 9 females) who had been injury free for the previous twelve months. Groups were matched for running volume and number of training sessions conducted per week. Running trials were performed on a treadmill at 4.0m/s. Reflective markers were placed over anatomical landmarks of the thoraco-lumbar spine, pelvis and femur. 3D angular data of the lumbo-pelvic-hip complex during running were captured using a motion analysis system. None of the anthropometric (height, pelvic width, relative pelvic width, standing pelvic tilt, active knee extension, hip extension, hip internal and external rotation) or spatiotemporal (stride time, stride rate, stride length, stance and swing time, relative stance and swing time) parameters were significantly different between groups. The lumbar spine was more extended during early stance for injured subjects. No differences were evident for any other lumbar spine or pelvis angular parameters. Injured females displayed greater amplitude of hip adduction-abduction whilst injured males displayed increased peak hip flexion.
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