Länk - Att knuffa på saker ger också stor belastning på ryggen
Granata and Bennet found that when cocontraction was not incorporated into the model, the forces on the back were indeed much smaller than those typically encountered in lifting tasks. But when cocontraction was factored in, the force on the spine increased by as much as 400 percent, depending on the height of the handle and the amount of force applied.
Läs mer: Cognitive Daily: "Lift with your legs" -- but how should you push?