Abstract
In the present study, we classified postures of head, cervicothoracic spine, and scapula, upper extremities in standing position, and investigated relation with alignment, muscle strength, and the range of motion(ROM). Subjects were 32 healthy adults, and the mean age was 21.9 years. For alignment measurement, six items were measured for scapula, head, and cervicothoracic spine. The ROM was determined with respect to shoulder joint, scapula, cervices, and trunk, while measurement of muscular strength (maximal voluntary contraction) was conducted for shoulder joint, scapula, and body trunk. Results and alignment were classified into three groups,viz. groups containing Group A: scapular abduction, an anterior tilting group, Group B: thoracic kyphosis, a forward head, the scapula downward rotation group, and Group C: ideal alignment group. Moreover, in Group B, decrease in the degree of bending on cervical side, and subscapular rotation in parallel indicated the possibility of the shortening of levator scapulae. Based on this, in the present study, though relation was found between alignment and the ROM, no relation was found between alignment and muscular strength.
