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Does treadmill workstation use affect user's kinematic gait symmetry?

Paul Gonzalo Arauz1, María-Gabriela García2, Mauricio Velez2

  • 1Department of Mechanical Engineering, Universidad San Francisco de Quito, Quito, Pichincha, Ecuador.

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Summary

Treadmill workstations may affect gait symmetry, particularly knee flexion during typing. This pilot study found unique knee asymmetries in users, suggesting task cognitive load influences walking patterns.

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Area of Science:

  • Biomechanics
  • Human factors engineering
  • Ergonomics

Background:

  • Treadmill workstations offer potential health benefits but their impact on gait and work performance is not fully understood.
  • Previous research has not comprehensively analyzed kinematic gait symmetry during combined treadmill walking and computer tasks.

Purpose of the Study:

  • To investigate the effects of treadmill workstation use on lower body kinematic gait symmetry.
  • To compare gait symmetry during treadmill workstation use versus overground and treadmill walking while performing a typing task.

Main Methods:

  • Ten healthy adults (6 males, 4 females) participated in this pilot study.
  • A motion capture system recorded lower body motion (hip, knee, ankle joint rotations).
  • Kinematic data were analyzed and compared across three conditions: overground walking, treadmill walking, and treadmill workstation use during typing.

Main Results:

  • Overall lower body kinematic gait asymmetries were comparable across all tested conditions.
  • Users of treadmill workstations exhibited unique asymmetric knee flexion during the early gait cycle (left knee significantly more flexed than the right).
  • This suggests the cognitive demands of the secondary task (typing) interact with gait mechanics.

Conclusions:

  • Treadmill workstation use can influence lower body kinematic gait symmetry, specifically affecting knee flexion patterns.
  • The cognitive content of a concurrent task significantly impacts the interaction between walking and other activities.
  • Further research is warranted to fully understand the biomechanical implications of treadmill workstations.