Improving between‐day kinematic reliability using a marker placement device

Noehren, Brian; Manal, Kurt; Davis, Irene

doi:10.1002/jor.21172

Cited by 44 publications

(63 citation statements)

References 12 publications

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“…For example Noehren et al [17] reported SEM values for sagittal motion of the hip (5.1°), knee (1.9°) and ankle (1.4°) for peak excursion, suggesting slightly better reproducibility than the current study. This difference may be attributed to the higher speeds used in this study which may have resulted in relatively high levels of within-day variability.…”

Section: Lower Levels Of Between-day Reproducibility Were Observed Incontrasting

confidence: 50%

Reproducibility of kinematic measures of the thoracic spine, lumbar spine and pelvis during fast running

et al. 2016

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Section: Lower Levels Of Between-day Reproducibility Were Observed Incontrasting

confidence: 50%

Reproducibility of kinematic measures of the thoracic spine, lumbar spine and pelvis during fast running

et al. 2016

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“…Lastly, a rigid clusters of four tracking markers were placed on the distal, posterolateral thigh and distal shank. The positions of the anatomical markers were recorded using a marker placement device 21. These measurements were then used to place the anatomical markers for each subsequent data collection.…”

Section: Methodsmentioning

confidence: 99%

The effect of real-time gait retraining on hip kinematics, pain and function in subjects with patellofemoral pain syndrome

Noehren

Scholz²,

Davis³

2010

Br J Sports Med

270

264

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Background Patellofemoral pain syndrome (PFPS) is the most common overuse injury in runners. Recent research suggests that hip mechanics play a role in the development of this syndrome. Currently, there are no treatments that directly address the atypical mechanics associated with this injury. Objective The purpose of this study was to determine whether gait retraining using real-time feedback improves hip mechanics and reduces pain in subjects with PFPS. Methods Ten runners with PFPS participated in this study. Real-time kinematic feedback of hip adduction (HADD) during stance was provided to the subjects as they ran on a treadmill. Subjects completed a total of eight training sessions. Feedback was gradually removed over the last four sessions. Variables of interest included peak HADD, hip internal rotation (HIR), contralateral pelvic drop, as well as pain on a verbal analogue scale and the lower-extremity function index. We also assessed HADD, HIR and contralateral pelvic drop during a single leg squat. Comparisons of variables of interest were made between the initial, fi nal and 1-month follow-up visit. Results Following the gait retraining, there was a signifi cant reduction in HADD and contralateral pelvic drop while running. Although not statistically signifi cant, HIR decreased by 23% following gait retraining. The 18% reduction in HADD during a single leg squat was very close to signifi cant. There were also signifi cant improvements in pain and function. Subjects were able to maintain their improvements in running mechanics, pain and function at a 1-month follow-up. An unexpected benefi t of the retraining was an 18% and 20% reduction in instantaneous and average vertical load rates, respectively. Conclusions Gait retraining in individuals with PFPS resulted in a signifi cant improvement of hip mechanics that was associated with a reduction in pain and improvements in function. These results suggest that interventions for PFPS should focus on addressing the underlying mechanics associated with this injury. The reduction in vertical load rates may be protective for the knee and reduce the risk for other running-related injuries.

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“…. 30 At the final data collection, anatomical markers were mounted according to the baseline coordinates.…”

Section: Baseline Screeningmentioning

confidence: 99%

The Effect of a Hip-Strengthening Program on Mechanics During Running and During a Single-Leg Squat

Willy

Davis

2011

Journal of Orthopaedic & Sports Physical Therapy

203

142

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Study Design Block randomized controlled trial. Objectives To investigate whether a strengthening and movement education program, targeting the hip abductors and hip external rotators, alters hip mechanics during running and during a single-leg squat. Background Abnormal movement patterns during running and single-leg squatting have been associated with a number of running-related injuries in females. Therapeutic interventions for these aberrant movement patterns typically include hip strengthening. While these strengthening programs have been shown to improve symptoms, it is unknown if the underlying mechanics during functional movements is altered. Methods Twenty healthy females with excessive hip adduction during running, as determined by instrumented gait analysis, were recruited. The runners were matched by age and running distance, and randomized to either a training group or a control group. The training group completed a hip strengthening and movement education program 3 times per week for 6 weeks in addition to single-leg squat training with neuromuscular reeducation consisting of mirror and verbal feedback on proper mechanics. The control group did not receive an intervention but maintained the current running distance. Using a handheld dynamometer and standard motion capture procedures, hip strength and running and single-leg squat mechanics were compared before and after the strengthening and movement education program. Results While hip abductor and external rotation strength increased significantly (P<.005) in the training group, there were no significant changes in hip or knee mechanics during running. However, during the single-leg squat, hip adduction, hip internal rotation, and contralateral pelvic drop all decreased significantly (P = .006, P = .006, and P = .02, respectively). The control group exhibited no changes in hip strength, nor in the single-leg squat or running mechanics at the conclusion of the 6-week study. Conclusion A training program that included hip strengthening and movement training specific to single-leg squatting did not alter running mechanics but did improve single-leg squat mechanics. These results suggest that hip strengthening and movement training, when not specific to running, do not alter abnormal running mechanics. Level of Evidence Therapy, level 2b. J Orthop Sports Phys Ther 2011;41(9):625–632, Epub 12 July 2011. doi:10.2519/jospt.2011.3470

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Improving between‐day kinematic reliability using a marker placement device

Cited by 44 publications

References 12 publications

Reproducibility of kinematic measures of the thoracic spine, lumbar spine and pelvis during fast running

Reproducibility of kinematic measures of the thoracic spine, lumbar spine and pelvis during fast running

The effect of real-time gait retraining on hip kinematics, pain and function in subjects with patellofemoral pain syndrome

The Effect of a Hip-Strengthening Program on Mechanics During Running and During a Single-Leg Squat

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