Spatial postural control alterations with chronic ankle instability

Pope, Meredith; Chinn, Lisa; Mullineaux, David R.; McKeon, Patrick O.; Drewes, Lindsay K.; Hertel, Jay

doi:10.1016/j.gaitpost.2011.04.012

Cited by 45 publications

(43 citation statements)

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“…Differences were found between uninjured participants and those with CAI. 27 Specifically, COP was more anteriorly and laterally positioned in participants with CAI compared with uninjured persons during eyes-open and eyes-closed single-legged standing. 27 The authors hypothesized that this spatial difference may represent a more constrained sensorimotor system and compensatory postural-control mechanisms in participants with CAI.…”

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confidence: 86%

“…9,10,[16][17][18][19][20][21][22][23][24][25][26] These deficits have been identified using a variety of outcome measures, including time to stabilization, 18,22 Star Excursion Balance Test (SEBT) reach distances, 19 center-ofpressure (COP) excursion measures, and time-to-boundary (TTB) measures. 23,27 The COP measures from force-plate data can be analyzed to determine the instantaneous point of application of ground reaction forces, and they are useful in evaluating the stability and function of the foot. 28 Recently, Pope et al 27 evaluated a novel measure, COP location, which involves examining the location of COP data points in relation to the plantar aspect of the foot.…”

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confidence: 99%

“…23,27 The COP measures from force-plate data can be analyzed to determine the instantaneous point of application of ground reaction forces, and they are useful in evaluating the stability and function of the foot. 28 Recently, Pope et al 27 evaluated a novel measure, COP location, which involves examining the location of COP data points in relation to the plantar aspect of the foot. Identifying the COP location indicates where the forces are distributed on the foot and provides insight into the postural-control strategy being used.…”

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Balance Training and Center-of-Pressure Location in Participants With Chronic Ankle Instability

Mettler

Chinn

Saliba

et al. 2015

Journal of Athletic Training

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Context: Chronic ankle instability (CAI) occurs in some people after a lateral ankle sprain and often results in residual feelings of instability and episodes of the ankle's giving way. Compared with healthy people, patients with CAI demonstrated poor postural control and used a more anteriorly and laterally positioned center of pressure (COP) during a single-limb staticbalance task on a force plate. Balance training is an effective means of altering traditional COP measures; however, whether the overall location of the COP distribution under the foot also changes is unknown.Objective: To determine if the spatial locations of COP data points in participants with CAI change after a 4-week balancetraining program.Design: Randomized controlled trial. Setting: Laboratory.Patients or Other Participants: Thirty-one persons with self-reported CAI.Intervention(s): Participants were randomly assigned to a 4-week balance-training program or no balance training.Main Outcome Measure(s): We collected a total of 500 COP data points while participants balanced using a single limb on a force plate during a 10-second trial. The location of each COP data point relative to the geometric center of the foot was determined, and the frequency count in 4 sections (anteromedial, anterolateral, posteromedial, posterolateral) was analyzed for differences between groups.Results: Overall, COP position in the balance-training group shifted from being more anterior to less anterior in both eyes-open trials (before trial ¼ 319.1 6 165.4, after trial ¼ 160.5 6 149.5; P ¼ .006) and eyes-closed trials (before trial ¼ 387.9 6 123.8, after trial ¼ 189.4 6 102.9; P , .001). The COP for the group that did not perform balance training remained the same in the eyes-open trials (before trial ¼ 214.1 6 193.3, after trial ¼ 230.0 6 176.3; P ¼ .54) and eyes-closed trials (before trial ¼ 326.9 6 134.3, after trial ¼ 338.2 6 126.1; P ¼ .69).Conclusions: In participants with CAI, the balance-training program shifted the COP location from anterolateral to posterolateral. The program may have repaired some of the damaged sensorimotor system pathways, resulting in a more optimally functioning and less constrained system. Key Words: sprains, rehabilitation, postural control Key PointsA 4-week progressive balance-training program effectively altered the spatial locations of center-of-pressure data points in participants with chronic ankle instability. The alteration in the spatial locations of center-of-pressure data points may indicate a more optimally functioning sensorimotor system.

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Balance Training and Center-of-Pressure Location in Participants With Chronic Ankle Instability

Mettler

Chinn

Saliba

et al. 2015

Journal of Athletic Training

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“…The maximum score for the ankle and foot disability index is 104 and for the athletic index of ankle and foot disability is 32 and the points are expressed as percentages. People were identified as a group with chronic ankle instability, which had one of the following conditions: Getting a score less than or equal to 95% in the index of foot and ankle disability and score less than or equal to 75% in the Foot and Ankle Disability Index Sport [27].…”

Section: Ankle and Foot Disability Index And Ankle Disability Index Smentioning

confidence: 99%

The Effect of 8-Week Comprehensive Combined Training Program on Parameters Elected Lower Extremity Kinematic Variables in the Men Athletes with Chronic Ankle Instability

Ranjbarzadeh

Shojaedin

Letafatkar

2018

J Hum Environ Health Promot

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“…Chronic ankle instability (CAI) is characterized with lateral ankle sprain followed by residual symptoms such as pain, weakness, recurrent ankle sprain, feelings of instability, and episodes of giving way in ankle joint (1)(2)(3)(4). Unfortunately, approximately 47% to 73% of patients experience recurrent sprains after initial injury (5).…”

Section: Introductionmentioning

confidence: 99%

The Alteration of Neuromuscular Control Strategies During Gait Initiation in Individuals with Chronic Ankle Instability

Ebrahimabadi

Naimi

Rahimi

et al. 2017

Iran Red Crescent Med J

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Background: Providing a clear picture of neuromuscular control mechanisms and deficits in patients with chronic ankle instability (CAI) requires further investigation. Gait initiation (GI) is a perfect task to evaluate concurrent open-loop (planned GI) and closedloop (unplanned GI) neuromuscular control mechanisms in patients with CAI. Objectives: The current study aimed at evaluating neuromuscular control mechanisms via assessment of the center of pressure (COP) displacements during planned and unplanned GI in patients with CAI and healthy individuals. Methods: It was a case-control study. Twenty-two subjects with unilateral CAI and 22 healthy subjects stood on a force plate and initiated gait with maximal velocity under 2 conditions: i) planned (initiated gait after hearing the "all set" signal, when subjects felt ready to walk) and ii) unplanned (initiated gait "as soon as possible" after hearing acoustic signal). The COP parameters were assessed during the preparatory and the execution phase of GI. Results: The peak COP displacement toward swing leg decreased significantly, with P value = 0.003, in the preparatory phase of

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Spatial postural control alterations with chronic ankle instability

Cited by 45 publications

References 20 publications

Balance Training and Center-of-Pressure Location in Participants With Chronic Ankle Instability

Balance Training and Center-of-Pressure Location in Participants With Chronic Ankle Instability

The Effect of 8-Week Comprehensive Combined Training Program on Parameters Elected Lower Extremity Kinematic Variables in the Men Athletes with Chronic Ankle Instability

The Alteration of Neuromuscular Control Strategies During Gait Initiation in Individuals with Chronic Ankle Instability

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