Dynamic Postural Stability in Females with Chronic Ankle Instability

Brown, Cathleen N.; Bowser, Bradley; Orellana, Alexander

doi:10.1249/mss.0b013e3181e40108

Cited by 39 publications

(31 citation statements)

References 21 publications

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“…76,135,[158][159][160][161][162] Other studies using other evaluation techniques (eg, the quantity of center of gravity displacement and time to regain stability after jump landing, 77,148,149,[163][164][165][166] unplanned gait termination, 167 or multiple hop test 168 ) reported similar results. Therefore, it was suggested that dynamic postural control in CAI subjects is significantly decreased based on a recent meta-analysis.…”

Section: Postural Controlmentioning

confidence: 91%

Lateral Ankle Sprain and Chronic Ankle Instability

Kobayashi

Gamada

2014

Foot & Ankle Specialist

114

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Section: Postural Controlmentioning

confidence: 91%

Lateral Ankle Sprain and Chronic Ankle Instability

Kobayashi

Gamada

2014

Foot & Ankle Specialist

114

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“…27 Sensorimotor control, knee kinematics, 30 and strength 27 may influence SEBT performance. In the present study, SEBT reach distances did not differ between the groups in the unfatigued condition.…”

Section: Effects Of Injury On Postural Controlmentioning

confidence: 99%

Fatigue-Induced Alterations of Static and Dynamic Postural Control in Athletes With a History of Ankle Sprain

Steib¹,

Zech

Hentschke³

et al. 2013

Journal of Athletic Training

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Context: Sensorimotor control is impaired after ankle injury and in fatigued conditions. However, little is known about fatigue-induced alterations of postural control in athletes who have experienced an ankle sprain in the past.Objective: To investigate the effect of fatiguing exercise on static and dynamic balance abilities in athletes who have successfully returned to preinjury levels of sport activity after an ankle sprain.Design: Cohort study. Setting: University sport science research laboratory.Patients or Other Participants: 30 active athletes, 14 with a previous severe ankle sprain (return to sport activity 6-36 months before study entry; no residual symptoms or subjective instability) and 16 uninjured controls.Intervention(s): Fatiguing treadmill running in 2 experimental sessions to assess dependent measures.Main Outcome Measure(s): Center-of-pressure sway velocity in single-legged stance and time to stabilization (TTS) after a unilateral jump-landing task (session 1) and maximum reach distance in the Star Excursion Balance Test (SEBT) (session 2) were assessed before and immediately after a fatiguing treadmill exercise. A 2-factorial linear mixed model was specified for each of the main outcomes, and effect sizes (ESs) were calculated as Cohen d.Results: In the unfatigued condition, between-groups differences existed only for the anterior-posterior TTS (P ¼ .05, ES ¼ 0.39). Group-by-fatigue interactions were found for mean SEBT (P ¼ .03, ES ¼ 0.43) and anterior-posterior TTS (P ¼ .02, ES ¼ 0.48). Prefatigue versus postfatigue SEBT and TTS differences were greater in previously injured athletes, whereas static sway velocity increased similarly in both groups.Conclusions: Fatiguing running significantly affected static and dynamic postural control in participants with a history of ankle sprain. Fatigue-induced alterations of dynamic postural control were greater in athletes with a previous ankle sprain. Thus, even after successful return to competition, ongoing deficits in sensorimotor control may contribute to the enhanced ankle reinjury risk.Key Words: sensorimotor control, neuromuscular activity, copers, balance, time to stabilization, Star Excursion Balance Test Key PointsWhen athletes were tested in the unfatigued state, only minimal differences in postural control were detected between athletes who had fully recovered from an ankle sprain and uninjured controls. Injured participants experienced larger fatigue-induced alterations of dynamic postural control than healthy controls. Persistent sensorimotor control deficits in recovered athletes might remain undetected in the unfatigued state.

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“…The manifestations of functional instability include impairments in sensorimotor control [27,33], which have been previously quantified by means of static [18,26,35] and dynamic balance tasks [28]. The Star Excursion Balance Test (SEBT) is one of the most commonly utilised measures of dynamic balance in lateral ankle sprain populations, capably identifying those who are at an increased risk of sustaining an ankle sprain injury [4,30], who have a current acute lateral ankle sprain injury [7], who are proceeding along the recovery trajectory of this injury [6], and who develop the chronic sequalae of chronic ankle instability [2,13,14,16]. However, despite the tendency for a high proportion of individuals to develop chronic ankle instability following an acute lateral ankle sprain (up to 74%) [1], some recover from this injury with no symptom progression.…”

Section: Introductionmentioning

confidence: 99%

Dynamic balance deficits in individuals with chronic ankle instability compared to ankle sprain copers 1 year after a first-time lateral ankle sprain injury

Doherty

Bleakley

Hertel

et al. 2015

Knee Surg Sports Traumatol Arthrosc

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lateral ankle sprain copers, 1-year following a first-time lateral ankle sprain injury. AbstractPurpose: To quantify the dynamic balance deficits that characterize a group with chronic ankle instability compared to lateral ankle sprain copers and non-injured controls using kinematic and kinetic outcomes.Methods: Forty-two participants with chronic ankle instability and twenty-eight ankle sprain copers were initially recruited within 2-weeks of sustaining a first-time, acute lateral ankle sprain and required to attend our laboratory one-year following to complete the current studyprotocol. An additional group of non-injured individuals were also recruited to act as a control group. All participants completed the anterior, posterior-lateral and posterior-medial reach directions of the Star Excursion Balance Test. Sagittal plane kinematics of the lower extremity and associated fractal dimension of the center of pressure path were also acquired. Results:Participants with chronic ankle instability displayed poorer performance in the anterior, posterior-medial and posterior-lateral reach directions compared to controls bilaterally, and in the posterior-lateral direction compared to ankle sprain copers on their 'involved' limb only. These performance deficits in the posterior-lateral and posterior-medial directions were associated with reduced flexion and dorsiflexion displacements at the hip, knee and ankle at the point of maximum reach, and coincided with reduced complexity of the center of pressure path. Conclusion:In comparison to ankle sprain copers and controls, participants with chronic ankle instability were characterized by dynamic balance deficits as measured using the SEBT. This was attested to reduced sagittal plane motions at the hip, knee and ankle joints, and reduced capacity of the stance limb to avail of its supporting base. Level of evidence: Level III

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Dynamic Postural Stability in Females with Chronic Ankle Instability

Abstract: Females with CAI demonstrated stability deficits compared with control group in the anterior and lateral jump directions. Multiple jump directions may be necessary to adequately capture dynamic stability measures.

Cited by 39 publications

References 21 publications

Lateral Ankle Sprain and Chronic Ankle Instability

Lateral Ankle Sprain and Chronic Ankle Instability

Fatigue-Induced Alterations of Static and Dynamic Postural Control in Athletes With a History of Ankle Sprain

Dynamic balance deficits in individuals with chronic ankle instability compared to ankle sprain copers 1 year after a first-time lateral ankle sprain injury

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