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In-chair movements: Categorizations and patterns over time based on a literature review.

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Area of Science:

  • Ergonomics and Human Factors
  • Biomechanics
  • Comfort Studies

Background:

  • In-chair movements (ICM) are studied for comfort but their role in alleviating discomfort is unclear.
  • Inconsistent terminology and study designs hinder cross-study comparisons of ICM.

Purpose of the Study:

  • To synthesize research on ICM, focusing on categorization and patterns over time.
  • To provide an overview of ICM progressions, characteristics, and potential patterns.

Main Methods:

  • Systematic literature search using PRISMA framework across Scopus, PubMed, and Web of Science.
  • Data extraction based on ICM frequency, amplitude, and posture change.

Main Results:

  • Eighteen studies met inclusion criteria, revealing substantial heterogeneity.
  • ICM frequency generally increased over time, with inconsistent findings on amplitude.
  • Posture changes, particularly slumping, were common during driving; patterns vary with task, seat, and individual factors.

Conclusions:

  • ICM patterns are influenced by seat characteristics, task demands, and individual factors, not just time.
  • The mechanisms linking ICM strategies to discomfort require further investigation.
  • A comprehensive ICM framework is needed for better comparability and future research.