Vibrotactile stimulation over the torso region immediately increase the control of deep muscles but not superficial muscles during abdominal drawing-in maneuver

Motor control dysfunction in the lumbar spine may alter in the muscle function of deep muscles such as transverse abdominal (TrA) and multifidus (MF). Previous studies have shown that sub-sensory stochastic resonance (SR) stimulation may improves balance and the sensitivity of specific mechanoreceptors. However, there is a largely unknown whether this intervention over the torso may contribute to the control of local superficial and deep muscles or not. In this preliminary study has demonstrated the increase in the control of deep muscles (TrA and MF), in contrast, not superficial muscles during abdominal drawing-in maneuver (ADIM).