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Category

Rehabilitation

Document Type

Paper

Abstract

The purpose of this study was to investigate muscle activity of the trunk and lower extremities during high vertical stepping in submerged (aquatic) and non-submerged conditions. Twelve participants (mean age 27 years) performed a 40-cm vertical step in water-submerged and non-submerged conditions. Lower limb and trunk muscle activity was recorded using electromyography. A motion capture system was also used to detect angular displacement and forward trunk inclination angle. In submerged conditions, the hip joint demonstrated a larger range of motion, with the electromyogram revealing lower mean values and higher integrated values of muscle activity for some muscles, compared with the non-submerged conditions. It was considered that a low to moderate instantaneous stimulus, but high total stimulus, can be taken on the muscles in the submerged condition compared with the non-submerged condition. Therefore, aquatic rehabilitation training can be effective to maintain or regain stepping ability.

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