Reposition Acuity and Postural Control after Exercise in Anterior Cruciate Ligament Reconstructed Knees

Goetschius, John; Kuenze, Christopher; Saliba, Susan A.; Hart, Joseph M.

doi:10.1249/mss.0b013e31829bc6ae

Cited by 25 publications

(41 citation statements)

References 39 publications

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“…This creeping pattern in our results was most evident in the larger magnitude variables of distance and area. In the current study we performed 10-second balance trials to coincide with trial lengths from musculoskeletal injury literature 7,8 ; however, longer collection times of time dependent variables may demonstrate an even greater discrepancy in measurement value between devices.…”

Section: Discussionmentioning

confidence: 99%

Validating Center-of-Pressure Balance Measurements Using the MatScan® Pressure Mat

Goetschius¹,

Feger²,

Hertel³

et al. 2018

Journal of Sport Rehabilitation

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Context: Measurements of center-of-pressure (COP) excursions during balance are common practice in clinical and research settings to evaluate adaptations in postural control due to pathological or environmental conditions. Traditionally measured using laboratory force plates, pressure-mat devices may be a suitable option for clinicians and scientist to measure COP excursions. Objective: Compare COP measures and changes during balance between MatScan® pressure mat and force plate. Design: Validation study. Setting: Laboratory. Participants: 30 healthy, young adults (19 female, 11 male, 22.7 ± 3.4 y, 70.3 ± SD kg, 1.71 ± 0.09 m). Main Outcomes: COP excursions were simultaneously measured using pressure-mat and forceplate devices. Participants completed 3 eyes-open and 3 eyes-closed single-leg balance trials (10 s). Mean of the 3 trials was used to calculate 4 COP variables: medial-lateral and anterior-posterior excursion, total distance, and area with eyes open and eyes closed. Percent change and effect sizes were calculated between eyes-open to eyes-closed conditions for each variable and for both devices. Results: All COP variables were highly correlated between devices for eyes-open and eyes-closed conditions (all r > .92, P < .001). BlandAltman plots suggest the pressure-mat COP measurements were smaller than those of the force-plate, and the differences between devices appeared to increase as the measurement magnitude increased. Percent change in COP variables was highly correlated between devices (r > .85, P < .001). Cohen d effect sizes between eyesopen and eyes-closed were all large (d > 2.25) and similar in magnitude between devices. Conclusion: COP measures were correlated between devices, but values tended to be smaller using the pressure mat. The pressure mat and force plate detected comparable magnitude changes in COP measurements between eyesopen and eyes-closed. Pressure mats may provide a viable option for detecting large magnitude changes in postural control during short-duration testing.

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Section: Discussionmentioning

confidence: 99%

Validating Center-of-Pressure Balance Measurements Using the MatScan® Pressure Mat

Goetschius¹,

Feger²,

Hertel³

et al. 2018

Journal of Sport Rehabilitation

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“…22,23 Recreationally active was defined as exercising 3 to 5 times per week. Preliminary analyses included 55 participants who had undergone ACL-R; however, 2 participants were excluded due to excessive time since surgery (144 and 206 months); they presented as outliers compared with the cohort, so we included 53 participants who had undergone ACL-R in the final analyses.…”

Section: Participantsmentioning

confidence: 99%

Knee-Extension Torque Variability and Subjective Knee Function in Patients With a History of Anterior Cruciate Ligament Reconstruction

Goetschius¹,

Hart

2016

Journal of Athletic Training

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Context: When returning to physical activity, patients with a history of anterior cruciate ligament reconstruction (ACL-R) often experience limitations in knee-joint function that may be due to chronic impairments in quadriceps motor control. Assessment of knee-extension torque variability may demonstrate underlying impairments in quadriceps motor control in patients with a history of ACL-R.Objective: To identify differences in maximal isometric knee-extension torque variability between knees that have undergone ACL-R and healthy knees and to determine the relationship between knee-extension torque variability and selfreported knee function in patients with a history of ACL-R.Design: Descriptive laboratory study. Setting: Laboratory. Patients or Other Participants: A total of 53 individuals with primary, unilateral ACL-R (age ¼ 23.4 6 4.9 years, height ¼ 1.7 6 0.1 m, mass ¼ 74.6 6 14.8 kg) and 50 individuals with no history of substantial lower extremity injury or surgery who served as controls (age ¼ 23.3 6 4.4 years, height ¼ 1.7 6 0.1 m, mass ¼ 67.4 6 13.2 kg).Main Outcome Measure(s): Torque variability, strength, and central activation ratio (CAR) were calculated from 3-second maximal knee-extension contraction trials (908 of flexion) with a superimposed electrical stimulus. All participants completed the International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, and we determined the number of months after surgery. Group differences were assessed using independent-samples t tests. Correlation coefficients were calculated among torque variability, strength, CAR, months after surgery, and IKDC scores. Torque variability, strength, CAR, and months after surgery were regressed on IKDC scores using stepwise, multiple linear regression.Results: Torque variability was greater and strength, CAR, and IKDC scores were lower in the ACL-R group than in the control group (P , .05). Torque variability and strength were correlated with IKDC scores (P , .05). Torque variability, strength, and CAR were correlated with each other (P , .05). Torque variability alone accounted for 14.3% of the variance in IKDC scores. The combination of torque variability and number of months after surgery accounted for 21% of the variance in IKDC scores. Strength and CAR were excluded from the regression model.Conclusions: Knee-extension torque variability was moderately associated with IKDC scores in patients with a history of ACL-R. Torque variability combined with months after surgery predicted 21% of the variance in IKDC scores in these patients.

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“…Cabe destacar que en muchos de los estudios reportados se hace referencia a sujetos que, o bien tenían una patología a nivel articular del tobillo o rodilla, o bien se encuentran en fase de readaptación o rehabilitación a su actividad deportiva (Chaiwanichsiri et al, 2005;Goetschius, Kuenze, Saliba, & Hart, 2013;Hale et al, 2007;Steib, Hentschke, Welsch, Pfeifer, & Zech, 2013). Este trabajo, sin embargo, se llevó a cabo con sujetos que, o bien no han sufrido ninguna lesión que le haya apartado del trabajo con el grupo durante 2 o más sesiones en las dos semanas previas a la realización del estudio, o bien no sufren ninguna patología crónica a nivel articular.…”

Section: Discussionunclassified

Comparación de un entrenamiento propioceptivo sobre base estable y base inestable / Comparison of a Proprioceptive Training Program on Stable Base and Unstable Base

González-Jurado¹,

Boza²,

Vázquez³

et al. 2016

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Reposition Acuity and Postural Control after Exercise in Anterior Cruciate Ligament Reconstructed Knees

Cited by 25 publications

References 39 publications

Validating Center-of-Pressure Balance Measurements Using the MatScan® Pressure Mat

Validating Center-of-Pressure Balance Measurements Using the MatScan® Pressure Mat

Knee-Extension Torque Variability and Subjective Knee Function in Patients With a History of Anterior Cruciate Ligament Reconstruction

Comparación de un entrenamiento propioceptivo sobre base estable y base inestable / Comparison of a Proprioceptive Training Program on Stable Base and Unstable Base

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