LUBA — Loading on the Upper Body Assessment
A posture-only joint-motion assessment focused on physical discomfort and localised stress accumulating in the trunk, neck, and upper limbs.
What is LUBA?
LUBA scales risk entirely on how far a joint strays from its natural anatomical neutral zone, built on experimental data mapping a "Composite Index of Perceived Discomfort" and maximum holding times (MHT) across joint configurations. It explicitly ignores load weight and duration to focus strictly on structural pose quality, using elbow flexion as its scientific reference point.
When to use LUBA
Deploy when evaluating static or semi-static work postures (seated or standing) where the primary risk is extreme joint deviation rather than heavy load handling.
Primary citation: Kee, D. & Karwowski, W. (2001). LUBA: An assessment technique for postural loading on the upper body based on joint motion discomfort and maximum holding time. Applied Ergonomics, 32(4), 357–366.
What LUBA assesses
The body segments and task variables evaluated in a LUBA assessment.
What it assesses
- Neck and back angular deviation
- Shoulder and elbow position
- Forearm pronation / supination
- Wrist flexion plus ulnar / radial deviation
Scoring and action levels
Final score range: Composite Index → 4 action categories
Developed by: Kee & Karwowski, 2001
LUBA is coming to Ergocure.ai
LUBA is part of our validated method roadmap. Our engine adds new methods on shared infrastructure — when LUBAgoes live it will run from the same on-device capture and certified-ergonomist review as our live methods. In the meantime, tell us your environment and we'll map the live methods that fit today.
Related assessment methods
Methods commonly used alongside LUBA in a complete ergonomic assessment.
Be first to know when LUBA lands
LUBA is on our roadmap. Request a pilot of our live methods today, and we'll flag LUBA the moment it goes live.