Attentional demands of postural control during single leg stance in patients with anterior cruciate ligament reconstruction

Negahban, Hossein; Ahmadi, Payam; Salehi, Reza; Mehravar, Mohammad; Goharpey, Shahin

doi:10.1016/j.neulet.2013.10.022

Cited by 52 publications

(51 citation statements)

References 16 publications

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“…First, the injured leg of the ACLI group (dominant/non-dominant) was matched with the same dominant/non-dominant leg of the control group (Dingenen et al, 2015a;Negahban, Ahmadi, Salehi, Mehravar, & Goharpey, 2013). Hereby, the 15 injured legs of the ACLI group were compared with 4 randomly chosen dominant legs and 11 randomly chosen nondominant legs of the control group, because 4 subjects of the ACLI group had an ACL injury on the dominant leg, and 11 subjects on the non-dominant leg.…”

Section: Muscle Activation Onset Timesmentioning

confidence: 99%

Lower extremity muscle activation onset times during the transition from double-leg stance to single-leg stance in anterior cruciate ligament injured subjects

Dingenen

Janssens

Luyckx

et al. 2015

Human Movement Science

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Section: Muscle Activation Onset Timesmentioning

confidence: 99%

Lower extremity muscle activation onset times during the transition from double-leg stance to single-leg stance in anterior cruciate ligament injured subjects

Dingenen

Janssens

Luyckx

et al. 2015

Human Movement Science

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“…The authors showed that ACLr patients displayed higher contact frequency and longer contact time compared to healthy match controls. But more interestingly, ACLr patients showed higher contact frequency and longer contact time during dual-task compared to single-task conditions [59]. These findings highlight that concurrent execution of both postural and cognitive tasks led to performance deterioration of postural stability measures rather than cognitive measures.…”

Section: Dual Cognitive Taskmentioning

confidence: 75%

“…During CoD tasks performed in competitive situations the cognitive load is increased since the athlete must allocate attentional resources to manipulate the ball and must also be aware of the location of their opponents, teammates and the goal and this in part may contribute to the higher risk of ACL injury during such movements [3,74]. Negahban et al [59] examined the effects of attention demands on postural control in ACLr patients who had return to sport > 12 months after surgery. Patients were required to perform a single-leg stance on a balance board under both singleand dual-task conditions in four dynamic balance tests.…”

Section: Dual Cognitive Taskmentioning

confidence: 99%

“…This suggests that the maintenance of standing balance is more attention demanding for ACLr patients than healthy matched controls. Therefore, it could be inferred that subtle alterations to testing protocols such as having participants attending to a ball [26], a defender [55], a simulated teammate [3], or simultaneous execution of a cognitive task [59] may have prominent effect on an athletes' movement during CoD. As a result, the attentional demands of a task need to be carefully considered if the goal is to develop/implement an ecologically valid testing protocol.…”

Section: Dual Cognitive Taskmentioning

confidence: 99%

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Change of Direction Assessment Following Anterior Cruciate Ligament Reconstruction: A Review of Current Practice and Considerations to Enhance Practical Application

et al. 2019

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Change of direction (CoD) has been indicated as a key mechanism in the occurrence of anterior cruciate ligament (ACL) injury during invasion sports. Despite these associations, assessments of knee function in athletic populations at the time of return to sport following ACL reconstruction (ACLr) have often focused on strength and single-leg hop tests, with a paucity of evidence to describe the CoD characteristics. Therefore, the aim of this narrative review was to describe the movement strategies exhibited following ACLr during CoD tasks and to critically analyze the range of tests that have been used. Specifically, we examined their ability to identify between-limb deficits and individuals who display a heightened risk of secondary injury and/or reductions in their level of pre-injury performance. MEDLINE, PubMed and SPORT Discuss databases were used and 13 articles were identified that met the inclusion criteria. Examination of the available literature indicates that current field-based practices are not representative of relevant sport demands and are unable to effectively assess knee function following ACLr. Laboratory-based studies have identified residual deficits and altered movement strategies at the time of return to sport, and this in part may be related to risk of re-injury. However, these assessments exhibit inherent limitations and are not practically viable for monitoring progress during rehabilitation. Consequently, alternative solutions that are more-aligned with the multitude of factors occurring during CoD maneuvers in chaotic sports environments are warranted to allow practitioners to 'bridge the gap' between the laboratory and the sports field/court. This approach may facilitate a more informed decision-making process with the end goal being, a heightened 'return to performance' and a lower risk of re-injury.

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“…Rupture of ACL increased postural instability by 25% and reconstructed ACL did not influence it significantly. 11 In another study done by Hirjaková et al, it was defined that postural stability in patients with ACL lesion worsened 6 weeks after reconstruction but may return to preoperation level 3 month after reconstruction. 12 Based on the available literature it is controversial whether ACL reconstruction surgery improves standing performance of the subjects or not.…”

mentioning

confidence: 99%

Evaluation of the Stability of the Subjects with Anterior Cruciate Injuries Reconstruction

et al. 2020

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Anterior cruciate ligament (ACL) is the most frequently injured ligament in the knee and is often injured during sport-related activities. ACL injuries influence the abilities of the subjects during standing and walking. Although early surgical intervention is preferred treatment for the majority of knee surgeons, the effect of this approach on postural stability of patients is not fully understood. Therefore, the aim of this study was to determine the difference between stability of ACL-reconstructed subjects before and after surgery. A group of 15 consecutive ACL injured patients participated in this study. Postural stability of the patients was evaluated 1 week before and 6 months after surgery (ACL reconstruction with hamstring autograft). A Kistler force plate was used to evaluate center of pressure (COP) sway during quiet standing. The mean values of the COP parameters were obtained in pre and postsurgery conditions. Paired sample t-test was used to evaluate the difference between the stability parameters of the two conditions. The significant point was set at 0.05. The mean value of path length of COP velocity in mediolateral (ML) direction was 1,485.57 ± 479.42 mm and 2,641.33 ± 996.26 mm before and after surgery, respectively (p-value = 0.01). Although the mean value of COP velocity in anteroposterior and ML directions increased after surgery, the difference was only significant for velocity in ML direction (p-value = 0.049). The results of this study showed that the standing stability of those with ACL reconstruction decreased significantly after ACL reconstruction, which may be due to the effects of the surgery on sensory mechanism of ACL and inability of patients to return to their previous deep sense perception and knee proprioception.

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Attentional demands of postural control during single leg stance in patients with anterior cruciate ligament reconstruction

Cited by 52 publications

References 16 publications

Lower extremity muscle activation onset times during the transition from double-leg stance to single-leg stance in anterior cruciate ligament injured subjects

Lower extremity muscle activation onset times during the transition from double-leg stance to single-leg stance in anterior cruciate ligament injured subjects

Change of Direction Assessment Following Anterior Cruciate Ligament Reconstruction: A Review of Current Practice and Considerations to Enhance Practical Application

Evaluation of the Stability of the Subjects with Anterior Cruciate Injuries Reconstruction

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