Part 4: Duration and Local Contact Stresses

Working without adequate rest can cause muscles to fatigue and performance to decline. When completing tasks, more can be accomplished when a break is taken, in comparison to when no breaks are taken.

Local contact stress happens when objects contact the skin and places stress on structures of the body. A common example is the use of tools. The use of a screwdriver with a small handle will cause additional stress in the base of the palm, in comparison to a long handle where no additional stress is placed in the palm.

This ergo-tip is a part of an ergo-tip series about musculoskeletal injuries. Please visit the table of contents at for other available posts. There will be one post released every Tuesday.