Lasting Effects of Workplace Strength Training for Neck/Shoulder/Arm Pain among Laboratory Technicians: Natural Experiment with 3-Year Follow-Up
Figure 3
Pain among participants with pain (≥3) at baseline from the two companies. The positive effect obtained during the controlled study was maintained (private sector) or further decreased (public sector) during the natural experiment. *denotes company by time interaction for elbow pain (borderline, ) and wrist pain () during the natural experiment.
