Altered Lower Extremity Movement Variability in Female Soccer Players During Side-Step Cutting After Anterior Cruciate Ligament Reconstruction

Pollard, Christine D.; Stearns, Kristen M.; Hayes, Andy T.; Heiderscheit, Bryan C.

doi:10.1177/0363546514560153

Cited by 69 publications

(56 citation statements)

References 31 publications

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“…Significant findings were reported in 73% (n = 11/15). Greater variability in the injured group was evident in 67% (n = 10/15) of the studies, reduced variability in 20% (n = 3/15), and no difference observed between the two groups in 27% (n = 4/15) …”

Section: Resultsmentioning

confidence: 91%

“…Overall findings revealed that 73% (n = 16/22) of studies reported a statistically significant difference in at least one dependent variable used to examine movement variability between injured subjects and uninjured controls. Injured subject groups demonstrated greater variability in 64% (n = 14/22) of the studies, reduced variability in 27% (n = 6/22), and no difference between groups was evident in 27% (n = 6/22) . Table presents the percentage of studies reporting greater, less, or no difference in variability when comparing injured subjects to uninjured controls.…”

Section: Resultsmentioning

confidence: 99%

“…In the studies investigating single specific injuries, 88% (n = 14/16) reported significant between‐group differences. Of these, greater variability was evident in 75% (n = 12/16), reduced variability in 31% (n = 5/16), while 13% (n = 2/16) reported no significant differences between injured and uninjured groups . Table presents the breakdown of findings when specific injury types were group together.…”

Section: Resultsmentioning

confidence: 99%

“…Injury at the knee joint was most commonly investigated. This was examined in 46% (n = 10/22) of studies with significant findings evident in 90% of these (n = 9/10). In the injured group, greater variability was evident in 80% (n = 8/10) of the studies, reduced variability in 30% (n = 3/10), and no between‐group differences in 10% (n = 1/10) …”

Section: Resultsmentioning

confidence: 99%

“…Continuous measures were examined for variability in 68% (n = 15/22) of studies . Significant findings were reported in 73% (n = 11/15).…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Does the amount of lower extremity movement variability differ between injured and uninjured populations? A systematic review

Baida

Gore

Franklyn-Miller

et al. 2018

Scandinavian Med Sci Sports

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Movement variability during repetitive performance of a dynamic activity (eg, running, jumping, kicking) is considered an integral characteristic of optimal movement execution; however, its relationship with musculo-skeletal injury is not known. The primary aim of this study was to review published comparison trials to determine whether movement variability differs between uninjured controls and subjects with a lower limb musculo-skeletal injury. A systematic search of online databases; MEDLINE, Sports Discus, Scopus, and Web of Science was conducted from July to November 2016. Studies were selected if they (a) included participants with a lower limb injury, (b) compared injured participants to uninjured controls, (c) examined movement variability for at least one dependent variable, and (d) provided a statistical between-group comparison when comparing measures of movement variability. Studies were excluded if they (a) investigated neurological disorders, (b) examined musculo-skeletal injury in the upper extremity or spine, and (c) used nonlinear measures to examine variability (ie, complexity). A significant difference between injured and uninjured populations was reported in 73% of the included studies, and of these, 64% reported greater movement variability in the injured group. This is the first systematic review with a best-evidence synthesis investigating the association between movement variability and musculo-skeletal injury. Findings suggest that movement variability in those with a musculo-skeletal injury differs from uninjured individuals. Interestingly, there was an overall trend toward greater movement variability being associated with the injured groups, although it should be noted that this trend was not consistent across all subcategories (eg, injury type). For a clearer insight into the clinical application of variability, greater methodological homogeneity is required and prospective research is recommended.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Continuous measures were examined for variability in 68% (n = 15/22) of studies . Significant findings were reported in 73% (n = 11/15).…”

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Does the amount of lower extremity movement variability differ between injured and uninjured populations? A systematic review

Baida

Gore

Franklyn-Miller

et al. 2018

Scandinavian Med Sci Sports

View full text Add to dashboard Cite

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ACL injury and reconstruction affect control of ground reaction forces produced during a novel task that simulates cutting movements

Lanier

Knarr

Stergiou

et al. 2020

Journal Orthopaedic Research

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After anterior cruciate ligament (ACL) injury and reconstruction, biomechanical and neuromuscular control deficits persist and 25% of those who have experienced an ACL injury will experience a second ACL rupture in the first year after returning to sports. There remains a need for improved rehabilitation and the ability to detect an individual's risk of secondary ACL rupture. Nonlinear analysis metrics, such as the largest Lyapunov exponent (LyE) can provide new biomechanical insight in this population by identifying how movement patterns evolve over time. The purpose of this study was to determine how ACL injury, ACL reconstruction (ACLR), and participation in high‐performance athletics affect control strategies, evaluated through nonlinear analysis, produced during a novel task that simulates forces generated during cutting movements. Uninjured recreational athletes, those with ACL injury who have not undergone reconstruction (ACLD [ACL deficient]), those who have undergone ACL reconstruction, and high‐performance athletes completed a task that simulates cutting forces. The LyE calculated from forces generated during this novel task was greater (ie, force control was diminished) in the involved limb of ACLD and ACLR groups when compared with healthy uninjured controls and high‐performance athletes. These data suggest that those who have experienced an ACL injury and subsequent reconstructive surgery exhibit poor force control when compared with both uninjured controls and high‐performance athletes. Clinical significance: significantly larger LyE values after ACL injury and reconstruction when compared with healthy athletes suggest a continuing deficit in force control not addressed by current rehabilitation protocols and evaluation metrics that could contribute to secondary ACL rupture.

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Motor learning strategies in basketball players and its implications for ACL injury prevention: a randomized controlled trial

Benjaminse

Otten

Gokeler

et al. 2015

Knee Surg Sports Traumatol Arthrosc

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PurposeAdding external focus of attention (EF, focus on the movement effect) may optimize current anterior cruciate ligament (ACL) injury prevention programmes. The purpose of the current study was to investigate the effects of an EF, by a visual stimulus and an internal focus, by a verbal stimulus during unexpected sidestep cutting in female and male athletes and how these effects remained over time.MethodsNinety experienced basketball athletes performed sidestep cutting manoeuvres in three sessions (S1, S2 and S3). In this randomized controlled trial, athletes were allocated to three groups: visual (VIS), verbal (VER) and control (CTRL). Kinematics and kinetics were collected at the time of peak knee frontal plane moment.ResultsMales in the VIS group showed a larger vertical ground reaction force (S1: 25.4 ± 3.1 N/kg, S2: 25.8 ± 2.9 N/kg, S3: 25.2 ± 3.2 N/kg) and knee flexion moments (S1: −3.8 ± 0.9 Nm/kg, S2: −4.0 ± 1.2 Nm/kg, S3: −3.9 ± 1.3 Nm/kg) compared to the males in the VER and CTRL groups and to the females in the VIS group (p < 0.05). Additionally, the males in the VIS group reduced knee valgus moment and the females in the VER group reduced knee varus moment over time (n.s.).ConclusionMale subjects clearly benefit from visual feedback. Females may need different feedback modes to learn a correct movement pattern. Sex-specific learning preferences may have to be acknowledged in day by day practice. Adding video instruction or feedback to regular training regimens when teaching athletes safe movement patterns and providing individual feedback might target suboptimal long-term results and optimize ACL injury prevention programmes.Level of evidenceI.

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Altered Lower Extremity Movement Variability in Female Soccer Players During Side-Step Cutting After Anterior Cruciate Ligament Reconstruction

Cited by 69 publications

References 31 publications

Does the amount of lower extremity movement variability differ between injured and uninjured populations? A systematic review

Does the amount of lower extremity movement variability differ between injured and uninjured populations? A systematic review

ACL injury and reconstruction affect control of ground reaction forces produced during a novel task that simulates cutting movements

Motor learning strategies in basketball players and its implications for ACL injury prevention: a randomized controlled trial

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