求翻译：A recent case-control study did not find evidence for the association between professional car driving and the related WBV with LBP cases referred to magnetic resonance imaging (MRI). In an other study, daily lifting of weights over 10 kg at work was associated with troublesome back pain and sciatica, but the impact of driving industrial vehicles was weak. A twin study did not find a greater overall tendency for disc degeneration or pathology among occupational drivers when compared with their nonexposed twin brothers. One population based study found a strong associations between WBV and musculoskeletal disorders, but suggested that the relationship can be confounded by heavy lifting and twisted postures.是什么意思？

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