Abstract
Purpose: The purpose of this study was to investigate how the opposite shoulder girdle composed of clavicle and scapula, which occupational therapists considers to be focused on in clinical situations, moves in the forward reach movement in healthy adult males by the three-dimensional motion analysis, and to obtain basic data. Based on the result of the study, it is to examine differences in influence of trunk movement and differences between dominant handedness and non dominant hand in viewpoint of postural control. Methods: Subjects were right-handed healthy 6 males. Non-reach motion shoulder girdle elevationangle were measured by three-dimensional motion analysis system. Statistical analysis was carried out in a Friedman test in each combination （dominant hand/upper limb length, nondominant
hand/upper limb length, dominant hand/upper limb length ＋ 20cm, non-dominant hand/upper limb length ＋ 20cm） Result: The non-reach motion shoulder girdle elevation angle at pointing was significantly greater in non-dominant hand/upper limb length ＋ 20cm than in others. The maximum angle was significantly greater in dominant hand/upper limb length ＋ 20cm than in others. Considerations: It is suggested that there is a possibility of posture assessment quantitatively using the non-motorized limb shoulder band, and that the level of reaching upper limb function differs depending on whether the injured side or motor paralyzed side is handedness or non dominant hand.
