According to OSHA, 1.8 million United States workers experience work-related musculo- skeletal disorders...About one-third of these injuries — 600,000 — are serious enough to required time off work!
According to the National Institute for Occupational Safety and Health, one-third of those 600,000 cases were the result of overexertion and repetitive motion.
49% of injuries involved lifting
12% of injuries involved pushing, pulling tasks
10% of injuries involved holding, carrying, or turning objects.
Do any of these activities sound familiar?
The authors of "A Case Study of Ergonomic Assessment in a Laboratory Animal Facility", published in Lab Animal, found the act of filling bottles had the highest score in these assessments of tasks that "post a significant risk of ergonomic injury."
Consider this...
A full 250 ml plastic bottle weighs 12 oz. A full 16 oz glass bottle weighs 1.78 lbs.
That equals 105-250 pounds lifted – cage after cage, rack after rack