Conclusion: The findings of this review indicate a consistent trend that supports the role of a chair intervention to
reduce musculoskeletal symptoms among workers who are required to sit for prolonged periods. However the
amount, level and quality of the evidence are only moderate therefore we cannot make strong recommendations
until further trials are conducted. The review also highlights gaps: for example in showing whether the effectiveness
of a chair intervention has long-term impact, particularly with respect to musculoskeletal symptoms, as well as the
recurrence of symptoms and the consequent cost of care.