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Relationship between chopstick manipulation and cross-sectional shape in the developmental stages from infancy to

Yuko Kaneko Yokubo1, Tetsuo Ota2, Katsuyuki Shibata2

  • 1Design Laboratory, Industrial Research Institute of Ishikawa, Kanazawa, Ishikawa, Japan; Division of Health Science, Graduate School of Medical Science, Kanazawa University, Japan.

Applied Ergonomics
|July 2, 2021
PubMed

Insights

Chopstick shape significantly impacts children

Area of Science:

  • Pediatric motor development
  • Human factors engineering
  • Occupational therapy

Background:

  • Chopstick use is a complex fine motor skill.
  • Developmental stage influences children's ability to manipulate chopsticks.
  • Understanding factors affecting chopstick manipulation is crucial for tool design.

Purpose of the Study:

  • To investigate the relationship between motor development and chopstick manipulation in children.
  • To examine the effect of different chopstick cross-sectional shapes (octagonal, square, triangular) on manipulation ability.
  • To identify optimal grip and force transmission for effective chopstick use.

Main Methods:

  • Studied 114 children aged 4-9 years.
  • Assessed chopstick manipulation based on developmental stage and grip.
  • Analyzed the impact of octagonal, square, and triangular chopstick shapes on performance.

Main Results:

  • Manipulation ability correlates with developmental stage and grip technique.
  • Optimal force transmission during closing and stabilization during opening enhance manipulation.
  • Square chopsticks enhance tip force; octagonal chopsticks promote upper chopstick rotation.
  • Opening chopsticks is more challenging than closing them.

Conclusions:

  • Children's motor development influences their preference for specific chopstick shapes.
  • Grip mechanics and force application are key to successful chopstick manipulation.
  • Future research will focus on optimizing chopstick designs for the opening motion.

Keywords:
ChildrenChopsticksMotor development

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