@article{58698,
abstract = {{ Background/Purpose Return to sport decision-making may be improved by assessing an athlete’s ability to coordinate movement with opponents in sport. The purpose was to investigate whether previous injuries associated with female soccer players’ interpersonal coordination during a collision avoidance task. The authors hypothesized that external perturbations would disrupt the strength and stability of coordinated movement, and that individuals with a history of injury would be less likely to recover coordinated movement. Study Design Cross-Sectional Methods Nine female athletes with a history of lower extremity injuries and nine without injuries were paired into dyads. Each dyad completed twenty trials of an externally paced collision-avoidance agility task with an unanticipated perturbation. Participant trajectories were digitized and analyzed using cross-recurrence quantification analysis (CRQA) to determine the strength and stability of interpersonal coordination dynamics. Trials in which participants with injury history assumed leader or follower roles within each dyad were then used to study how dyadic coordination varied across task stages (early, perturbation, and late) using linear mixed effect models. Cohen’s d effect sizes were calculated to demonstrate magnitude of differences. In exploratory analysis, psychological readiness (i.e., self-reported knee functioning, fear of injury, and risk-taking propensity) was evaluated for their association with leader-follower status. Results Perturbation disrupted the strength (R2=0.65, p<0.001, early=49.7±1.7, perturbation=41.1±1.7, d=0.39) and stability (R2=0.71, p < 0.001, early=65.0±1.6, perturbation=58.0±1.7, d=0.38) of interpersonal coordination regardless of leader-follower status. Individuals with injury history failed to restore coordination after the perturbation compared to control participants (injury=44.2.0±2.1, control=50.8±2.6, d=0.39). Neither demographic nor psychological measures were associated with leader-follower roles (B=0.039, p=0.224). Conclusion Individuals with a history of lower extremity injury may have a diminished ability to adapt interpersonal coordination to perturbations, possibly contributing to a higher risk of re-injury. Level of Evidence 3 }},
author = {{Fernandes, Courtney A and Norte, Grant E and Schwab, Sarah M and Gokeler, Alli and Murray, Amanda and Bazett-Jones, David M and Sherman, David A}},
issn = {{2159-2896}},
journal = {{International Journal of Sports Physical Therapy}},
number = {{5}},
publisher = {{International Journal of Sports Physical Therapy}},
title = {{{Interpersonal Coordination between Female Soccer Players: Leader-Follower Roles within a Collision-Avoidance Task}}},
doi = {{10.26603/001c.116156}},
volume = {{19}},
year = {{2024}},
}
@article{58702,
abstract = {{ Background In basketball, changing direction is one of the primary mechanisms of anterior cruciate ligament (ACL) injury, often occurring within complex game situations with high cognitive demands. It is unknown how visual attention affects sidestep cutting kinematics during the entire energy absorption phase of the cut in an ecologically valid environment. Purpose The purpose of this research was to study the effect of added cognitive load, in the form of increased visual attentional demands, on sidestep cutting kinematics during the energy absorption phase of the cut in an ecologically valid environment. Study Design Crossover Study Methods Fifteen male basketball players (aged 22.1 ± 2.3) performed ten sidestep cutting movements without (BASE) and with (VIS) a visual attention dual task. 3D kinematics of the hip, knee and ankle were recorded utilizing Xsens IMU motion capture. Temporal kinematics were analyzed using Statistical Parametric Mapping. Discrete time point kinematics were additionally analyzed at initial contact (IC) and at peak knee flexion utilizing paired t-tests. Effect sizes were calculated. Results Hip flexion was significantly reduced in the VIS condition compared to the BASE condition (p<0.01), including at IC (VIS 35.0° ± 7.2°, BASE 40.7° ± 4.9°, p=0.02, d=0.92) and peak (VIS 37.8° ± 9.7°, BASE 45.5° ± 6.9°, p=0.001, d=0.90). Knee flexion was significantly reduced in the VIS condition, in comparison to the BASE condition (p<0.01), at peak (VIS 59.9° ± 7.5°, BASE 64.1° ± 7.4°, p=0.001, d=0.55). Conclusion The addition of visual attention during sidestep cutting altered lower limb kinematics, which may increase ACL injury risk. It is suggested that ACL injury risk screening and prevention should include sidestep cutting with visual attentional demands, in order to mimic the cognitive demands of the sports environment. Level of Evidence 3 }},
author = {{Rikken, Koen T.H. and Panneman, Tom and Vercauteren, Fabian and Gokeler, Alli and Benjaminse, Anne}},
issn = {{2159-2896}},
journal = {{International Journal of Sports Physical Therapy}},
number = {{11}},
publisher = {{International Journal of Sports Physical Therapy}},
title = {{{Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players}}},
doi = {{10.26603/001c.124804}},
volume = {{19}},
year = {{2024}},
}
@article{32452,
author = {{Singh, Harjiv and Gokeler, Alli and Benjaminse, Anne}},
issn = {{2159-2896}},
journal = {{International Journal of Sports Physical Therapy}},
keywords = {{General Earth and Planetary Sciences, General Environmental Science}},
number = {{6}},
publisher = {{International Journal of Sports Physical Therapy}},
title = {{{Effective Attentional Focus Strategies after Anterior Cruciate Ligament Reconstruction: A Commentary}}},
doi = {{10.26603/001c.29848}},
volume = {{16}},
year = {{2021}},
}
@article{45138,
abstract = {{Individuals after anterior cruciate ligament reconstruction (ACLR) have a high rate of reinjury upon return to competitive sports. Deficits in motor control may influence reinjury risk and can be addressed during rehabilitation with motor learning strategies. When instructing patients in performing motor tasks after ACLR, an external focus of attention directed to the intended movement effect has been shown to be more effective in reducing reinjury risk than an internal focus of attention on body movements. While this concept is mostly agreed upon, recent literature has made it clear that the interpretation and implementation of an external focus of attention within ACLR rehabilitation needs to be better described. The purpose of this commentary is to provide a clinical framework for the application of attentional focus strategies and guide clinicians towards effectively utilizing an external focus of attention in rehabilitation after ACLR. Level of Evidence 5 }},
author = {{Singh, Harjiv and Gokeler, Alli and Benjaminse, Anne}},
issn = {{2159-2896}},
journal = {{International Journal of Sports Physical Therapy}},
keywords = {{Rehabilitation, Orthopedics and Sports Medicine, Physical Therapy, Sports Therapy and Rehabilitation}},
number = {{6}},
publisher = {{International Journal of Sports Physical Therapy}},
title = {{{Effective Attentional Focus Strategies after Anterior Cruciate Ligament Reconstruction: A Commentary}}},
doi = {{10.26603/001c.29848}},
volume = {{16}},
year = {{2021}},
}