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Step type is associated with loading and ankle motion in tap dance.

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Cramp rolls and toe cannons generate higher impact forces in tap dance than flap or heel cannon steps. Dancer experience did not affect these forces, suggesting injury risk may be step-dependent.

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Area of Science:

  • Biomechanics
  • Dance Science
  • Kinesiology

Background:

  • Tap dance involves dynamic movements generating significant forces on the musculoskeletal system.
  • Understanding the biomechanical load of specific tap steps is crucial for injury prevention.
  • Limited research quantifies the forces and joint kinematics across different tap dance techniques.

Purpose of the Study:

  • To quantify peak vertical ground reaction forces (vGRF), average vertical foot velocities, and ankle joint angles during four distinct tap steps.
  • To compare these biomechanical parameters between the toe cannon, heel cannon, flap, and cramp roll steps.
  • To investigate the influence of tap dance experience level on these biomechanical outcomes.

Main Methods:

  • A prospective cross-sectional study involving 14 female tap dancers (age ≥18 years) with varied experience.
  • Motion capture using three cameras synchronized with a force platform to record tap steps.
  • Analysis of vGRF, foot velocity, and ankle angles during a standardized tap combination.

Main Results:

  • The cramp roll and toe cannon steps produced significantly higher peak vGRF, ankle angles, and velocities compared to the flap and heel cannon.
  • No statistically significant effect of dancer experience level was found on the measured biomechanical parameters.
  • Individual dancer variations in force and motion were observed, but step type was the primary differentiator.

Conclusions:

  • Specific tap steps, namely the cramp roll and toe cannon, impose greater biomechanical stress.
  • The findings suggest that the type of tap step, rather than dancer experience, is a key factor in potential injury risk.
  • Recommendations for tap dance training and choreography may benefit from considering these step-specific force profiles to mitigate injury risk.