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The subject's profession, time spent driving and sitting on the job (hours per day), average weight lifted (in kilograms) and frequency of lifting (number of times per hour, per day, and per week), different working positions (minutes per hour), standing and walking during work (hours per day), weekly working hours, recalled trauma at work, and commuting to and from work were recorded. frequency of lifting, duration of task; * environmental conditions: noise, light/ |
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