Replacing a Swiss ball for an exercise bench causes variable changes in trunk muscle activity during upper limb strength exercises

摘要

BackgroundThe addition of Swiss balls to conventional exercise programs has recently been adopted. Swiss balls are an unstable surface which may result in an increased need for force output from trunk muscles to provide adequate spinal stability or balance. The aim of the study was to determine whether the addition of a Swiss ball to upper body strength exercises results in consistent increases in trunk muscle activation levels.