The current proposal will evaluate the acute impacts on the sensory and motor systems interaction reflected in changes in scapular kinematics and accuracy, and consistency in arm positioning while performing two shoulder-joint angle replication tasks in b
The current proposal will evaluate the acute impacts on the sensory and motor systems interaction reflected in changes in scapular kinematics and accuracy, and consistency in arm positioning while performing two shoulder-joint angle replication tasks in both the frontal and scapular planes, following the application of kinesiology tape (KT) over the right upper trapezius (UT). A pre – posttests repeated measures design will be carried out to compare the effects of KT applied at 0% (KT0) and 25% (KT25) of tension, to the control condition with no taping. Eight healthy and asymptomatic participants will complete voluntary arm-raising motor tasks at two predetermined angles. A motion capture system will record both the scapular kinematics and the shoulder-joint angle replication task by tracking the displacement of twelve infrared-diodes placed on anatomical landmarks depicting the scapular kinematics and arm positioning in space. We expect that KT25 modulates the neuromuscular activity of UT by decreasing the upward scapular rotation compared to KT0 and no-KT. Also, it is expected that the neuromuscular activity of lower trapezius (LT) will be modulated, reflected by increasing the posterior scapular tilt compared to KT0 and no-KT. Subsequently, opposing changes in UT and LT neuromuscular activity evoked by KT25 on the UT will smoothen scapular kinematics to improve the accuracy, and consistency in arm’s end position in space while carrying the replication tasks. Besides, we expect to observe a significant enhancement of these variables in the frontal plane in comparing with the scapular plane. These results will contribute to supporting the KT usage as a sensorimotor modulator for preventing or treating neuromuscular imbalance between antagonists muscle, in asymptomatic neuromusculoskeletal condition based on the cutaneous – motor microcircuits.