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INCORPORATING A DUAL-TASK ASSESSMENT PROTOCOL WITH FUNCTIONAL HOP TESTING
Brandon M Ness1, Kory Zimney1, Thomas Kernozek2
1Department of Physical Therapy, University of South Dakota, Vermillion, SD, USA.
International Journal of Sports Physical Therapy
|June 23, 2020
Summary
Dual-task hop tests assessing cognitive function alongside physical performance showed reliable results in healthy individuals. The backward digit span memory task slightly decreased hop distance, but overall dual-tasking did not significantly impact performance, suggesting potential for realistic return-to-sport evaluations.
Area of Science:
- Sports Medicine
- Neuroscience
- Biomechanics
Background:
- Hop tests are crucial for assessing anterior cruciate ligament (ACL) injury recovery and return-to-sport readiness.
- High re-injury rates persist despite standard hop test protocols.
- Dual-tasking, incorporating cognitive challenges, may offer a more ecologically valid assessment.
Purpose of the Study:
- To evaluate a practical dual-task assessment paradigm during functional hop tests in healthy individuals.
- To investigate the impact of cognitive load on hop test performance and reliability.
Main Methods:
- Healthy participants (n=34) performed crossover triple hop (XHOP) and medial triple hop (MHOP) tests.
- Testing conditions included standard, backward digit span memory, and visuospatial recognition dual-task protocols.
- Motor and cognitive tasks were performed independently and simultaneously.
Main Results:
- Hop distance was not significantly affected by dual-tasking, except for a minor decrease with the backward digit span task (p=0.04).
- Cognitive task accuracy showed no significant differences across hop test types.
- Dual-task protocols demonstrated excellent within- and between-session intrarater reliability for hop distance.
Conclusions:
- Simultaneous cognitive tasks generally do not alter hop performance, with minimal impact from the backward digit span task.
- Dual-task hop assessments exhibit strong reliability in healthy individuals.
- Measurement precision requires further investigation for clinical application.
