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Mean (SD) electromyographic (EMG) activity measured in the erector spinae (ES), gluteus medius (GM), rectus femoris (RF), semitendonosus (ST), tibialis anterior (TA) and gatrocnemius lateralis (GL) muscles for control (A) and BHJS (B) subjects during 30 s each of quiet standing with eyes open (task 1) and eyes closed (task 2), and one-leg standing with eyes open (task 3) and eyes closed (task 4) (∗ denotes significant difference compared with task 4).
