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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Appl Ergon. 2013 Nov 23;45(4):857–864. doi: 10.1016/j.apergo.2013.11.002

Table V. Workers who met a WISHA caution or hazard level.

Caution Level ≥2 hours Hazard Level ≥4 hours
Category VCT (n=5) Ceramic (n=13) Wood (n=9) Carpet (n=5) All materials (n=32) Carpet (n=5)
Posture Intensity n n n n n (%) n (%)
Low back bent > 30° 5 1 8 4 18 (56) 1 (20)
R Knee bent 5 1 8 5 19 (59) 0
L Knee bent 4 1 6 5 16 (50) 0
Neck bent* 4 0 7 5 16 (50) 0
R Shoulder 0 0 2 1 3 (9) 0
L Shoulder 0 0 2 1 3 (9) 0
L wrist ≥45° extension 0 0 0 2 2 (6) 0
Force Intensity
R grip ≥ 10 lbs 0 13 0 5 18 (56) 0
L grip ≥ 10 lbs 0 1 0 0 1 (3) 0
R pinch ≥ 2 lbs 0 0 0 0 0 (0) 0
L pinch ≥ 2 lbs 0 0 0 0 0 (0) 0
*

Neck bent into extension