Torso kinematics in seated reaches

Matthew P. Reed, Matthew B. Parkinson, David W. Wagner

Research output: Contribution to conferencePaperpeer-review

6 Scopus citations


Simulations of humans performing seated reaches require accurate descriptions of the movements of the body segments that make up the torso. Data to generate such simulations were obtained in a laboratory study using industrial, auto, and truck seats. Twelve men and women reached to push-button targets located throughout their right-hand reach envelopes as their movements were recorded using an electromagnetic tracking system. The data illustrate complex patterns of motion that depend on target location and shoulder range of motion. Pelvis motion contributes substantially to seated reach capability. On padded seats, the effective center of rotation of the pelvis is often within the seat cushion below the pelvis rather than at the hips. Lumbar spine motions differ markedly depending on the location of the target. A categorization of reach targets into four zones differentiated by torso kinematics is proposed.

Original languageEnglish (US)
StatePublished - Dec 1 2004
EventDigital Human Modeling for Design and Engineering Symposium - Rochester, MI, United States
Duration: Jun 15 2004Jun 17 2004


OtherDigital Human Modeling for Design and Engineering Symposium
Country/TerritoryUnited States
CityRochester, MI

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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