Lasting Effects of Workplace Strength Training for Neck/Shoulder/Arm Pain among Laboratory Technicians: Natural Experiment with 3-Year Follow-Up

Figure 5

Perceived level of effort during training of neck, shoulder, and arm muscles throughout the natural experiment (private company: 𝑛=333 and public company: 𝑛=140). There was no significant difference in perceived level of effort between the two companies (𝑃=0.54).