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Single- Versus Dual-Task Functional Movement Paradigms: A Biomechanical Analysis.

Landon B Lempke, Jeonghoon Oh, Rachel S Johnson

    Journal of Sport Rehabilitation
    |January 25, 2021
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    Summary
    This summary is machine-generated.

    Cognitive load during dual-task activities altered jump landing and cutting movements compared to single-task. These subtle kinematic and kinetic changes may impact functional movement assessments and injury risk evaluation.

    Keywords:
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    Area of Science:

    • Biomechanics
    • Sports Science
    • Motor Control

    Background:

    • Laboratory movement assessments often neglect cognitive load, unlike real-world sports.
    • Cognitive processing during movement (dual-task) can significantly alter biomechanics.
    • Limited research exists on dual-task effects on functional movement and injury risk.

    Purpose of the Study:

    • To compare kinematics and kinetics during single-task versus dual-task functional movements.
    • To investigate the influence of cognitive load on movement patterns in healthy individuals.
    • To control for sex differences in the analysis of movement under varying cognitive demands.

    Main Methods:

    • Cross-sectional laboratory study with 41 healthy participants.
    • Participants performed jump landings and single-leg cuts under single-task and dual-task conditions.
    • Mixed-model analysis of variance compared joint angles, moments, ground reaction forces, and impulse.

    Main Results:

    • Dual-task increased vertical ground reaction force during jump landings but decreased it during dominant leg cuts.
    • Hip-flexion torque was reduced during dual-task compared to single-task conditions.
    • No other significant kinematic or kinetic differences were found between single- and dual-task conditions.

    Conclusions:

    • Subtle, yet potentially significant, kinematic and kinetic differences exist between single- and dual-task movements.
    • These findings suggest implications for functional movement assessments and injury risk research.
    • Further research is needed to understand dual-task effects in clinical populations before implementation.