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Active segment detection based on adaptive SampEn threshold algorithm in reach-up-to-down motion. DT, descending part of trapezius; LRA, left rectus abdominis; RRA, right rectus abdominis; LOEA, left obliquus externus abdominis; ROEA, right obliquus externus abdominis; LTES, left thoracic erector spinae; RTES, right thoracic erector spinae; LLES, left lumbar erector spinae; RLES, right lumbar erector spinae.
