Ключевые слова: 50s, ache, back, back pain, bending, body, box, boxes, business, cardboard boxes, carrying, caucasian, commercial, delivery, distribution, distribution warehouse, factory, freight transportation, frowning, goods, grimacing, health, in pain, indoors, industrial, industry, job, male, man, manual worker, mature adult, muscle pain, occupation, package, packaging, painful, shipping, standing, stock, storage, store, storehouse, suffering, supply, touching, warehouse, wincing, worker, working,