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Updated: Jun 13, 2026
06:48
Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
Published on: June 7, 2024
Digital 3-D headforms with facial features representative of the current US workforce
Ziqing Zhuang1, Stacey Benson, Dennis Viscusi
1National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, Pittsburgh, PA, USA.
Ergonomics
|May 1, 2010
Summary
New 3-D headforms represent the current US workforce, improving respirator fit and safety. These updated headforms address limitations of older anthropometric data for better respirator design and certification.
Area of Science:
- Occupational Safety and Health
- Anthropometry
- Biomechanical Engineering
Background:
- Current headforms rely on outdated anthropometric data.
- Respirator fit is critical for protecting workers from inhalation hazards.
- A need exists for headforms reflecting the contemporary US workforce's facial characteristics.
Purpose of the Study:
- To develop digital 3-D headforms representative of the current US workforce.
- To update anthropometric data used in respirator design and certification.
- To create standardized headforms for improved respirator fit testing.
Main Methods:
- Conducted an anthropometric survey of 3997 respirator users.
- Utilized Cyberware 3-D Rapid Digitizer to scan 1013 subjects.
- Applied principal component analysis to ten key facial dimensions to define five face-size categories.
- Averaged scans within each category to construct representative 3-D headforms.
Main Results:
- Developed five digital 3-D headforms: small, medium, large, long/narrow, and short/wide.
- Headforms accurately represent current US workforce facial dimensions within 3 mm of computed means.
- The principal component analysis effectively categorized the user population by face size and shape.
Conclusions:
- The new 3-D headforms provide a more accurate representation of the US workforce than existing models.
- These headforms can enhance respirator research, improve certification standards, and guide better respirator design.
- Implementing these headforms can contribute to reducing risks associated with inhalation hazards in occupational settings.
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