Abstract
Natural human posture is determined by vertical position of trunk and horizontal optic orientation for locomotion. 10 probands acquired by intentional selection. Probands were between 26 and 31 years old, both men and women, master graduates of physiotherapy, without objective problems.
Group was selected on purpose, so that the probands were able to fulfil motion task. Objective significance of recorded phenomenon was selected on the level of 70% to 90% within 10 probands.
The study consists of ten intraindividual comparative analyses of intentional simulation of physiologic and non-physiologic postural position in the area of cervial spine and shoulder joints via data acquired from electromyographic potentials with synchronized video-record. Graduated physiotherapists without any objective problems got a motion task, in 10 seconds to change the position of cervical spine by chin protraction and accentuation of cervical lordosis with simultaneous enternal rotation in all shoulder joints.
After reaching this position "a la upper cross syndrome" they returned gradually back to original posture with outer rotation in shoulder joints and smoothened cervical lordosis. The motion was forced to extreme positions in order to see possible contrasts of motion apparatus response.
We may state that significant changes of tonic activities of m. pectoralis major, m. trapezius in all three parts, m. erector trunci and m. gastrocnemius were found, depending on cervical spine and shoulder joints position. We may state that defined positon of cervical spine and rotation situation of shoulder joints can affect the parameters to secure the posture.
Based on the comparative analysis of considered physiologic and nonphysiologic position of cervical spine and shoulder joint it is possible ti instruct the patients, recreation and profesional sportsmen etc with simple directions, whose acceptation positively influence the formation of correct postural motion stereotypes.