Kathryn Bigsby1, Robert E Mangine2, Joseph F Clark3, Joseph T Rauch4, Benjamin Bixenmann5, Antonia W Susaret6, Kimberly A Hasselfeld7, Angelo J Colosimo8. 1. Resident, Sports Physical Therapy Clinical Residency, NovaCare, Rehabilitation/University of Cincinnati, Cincinnati, Ohio, USA. 2. Athletic Director of Sports Medicine and Director of Sports Physical Therapy Clinical Residency, NovaCare, Rehabilitation/University of Cincinnati, Cincinnati, Ohio, USA. 3. Professor, Department of Neurology and Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA. 4. Head Athletic Trainer, NovaCare, Rehabilitation/University of Cincinnati, Cincinnati, Ohio, USA. 5. Resident, Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA. 6. Medical Student, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA. 7. Clinical Research Manager, Department of Orthopaedics and Sports Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA. 8. Assistant Professor, Department of Orthopaedics and Sports Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
Abstract
PURPOSE/ BACKGROUND: Visuomotor ability is an important parameter for neurologic function and effective sport performance. Adding a balance challenge during a structured eye-hand coordination task, such as hitting lights on a light board (Dynavision™), has not been previously reported. Using Division I football players, the aim of this study was to determine normative data on a dual-task performance regimen combining a visuomotor light board task with a balance task. The intent is to use such normative data and baseline data as part of a concussion management program. METHODS: Division I college football team members, n=105, were consented. Subjects first performed Dynavision™ D2™ Visuomotor Training Device (D2™) eye-hand coordination tasks, the A* and the RT; they then performed the same tasks with an added balance challenge, standing on a BOSU® ball. RESULTS: Ninety-four athletes completed the full testing procedure on the D2™ system. The mean score of the A* test was 93 ± 11.0 hits per minute; and the mean on the A* test with the added BOSU® balance challenge was 83.7 ± 9.2 hits per minute. The mean RT time was 0.33 ± 0.036 seconds. Mean reaction time increased to 0.38 ± 0.063 while the subject stood on the BOSU® ball. Performance on the D2™ A* and RT were both statistically significantly different in the dual task condition (p<0.05). CONCLUSIONS: Results show an approximate 10% decline in D2™ performance when healthy individuals stand on a BOSU® ball. From the data presented here, the authors determined that there is a 10% decrement in performance when one's balance is challenged on the BOSU® ball. A fall in performance of substantially greater than 10% may indicate abnormal vestibulocerebellar regulatory processing of balance and motion. Further research, using these normative data is needed to determine more specific parameters for definitions of impairment and return-to-play and if there is utility for such studies as part of a concussion management program. LEVEL OF EVIDENCE: III.
PURPOSE/ BACKGROUND: Visuomotor ability is an important parameter for neurologic function and effective sport performance. Adding a balance challenge during a structured eye-hand coordination task, such as hitting lights on a light board (Dynavision™), has not been previously reported. Using Division I football players, the aim of this study was to determine normative data on a dual-task performance regimen combining a visuomotor light board task with a balance task. The intent is to use such normative data and baseline data as part of a concussion management program. METHODS: Division I college football team members, n=105, were consented. Subjects first performed Dynavision™ D2™ Visuomotor Training Device (D2™) eye-hand coordination tasks, the A* and the RT; they then performed the same tasks with an added balance challenge, standing on a BOSU® ball. RESULTS: Ninety-four athletes completed the full testing procedure on the D2™ system. The mean score of the A* test was 93 ± 11.0 hits per minute; and the mean on the A* test with the added BOSU® balance challenge was 83.7 ± 9.2 hits per minute. The mean RT time was 0.33 ± 0.036 seconds. Mean reaction time increased to 0.38 ± 0.063 while the subject stood on the BOSU® ball. Performance on the D2™ A* and RT were both statistically significantly different in the dual task condition (p<0.05). CONCLUSIONS: Results show an approximate 10% decline in D2™ performance when healthy individuals stand on a BOSU® ball. From the data presented here, the authors determined that there is a 10% decrement in performance when one's balance is challenged on the BOSU® ball. A fall in performance of substantially greater than 10% may indicate abnormal vestibulocerebellar regulatory processing of balance and motion. Further research, using these normative data is needed to determine more specific parameters for definitions of impairment and return-to-play and if there is utility for such studies as part of a concussion management program. LEVEL OF EVIDENCE: III.
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