行政院國家科學委員會補助專題研究計畫成果報告:脊髓損傷患者與正常人舉臂動作之分析:本體感覺與視覺的影響(1/3)
Date Issued
2000
Date
2000
Author(s)
林光華
DOI
892320B002067
Abstract
The purposes of this study was to analyze the effects of reaching under the conditions of visual and somatosensory disturbances on young and old normal subjects. Totally nineteen male subjects participated in this study. They were divided into young group (20-40 yrs, 10 subjects) and middle age-old group (50-74 yrs, 9 subjects). The recording equipments included force plate (AMTI), motion analysis system (Vicon 140) and surface electromyography (EMG). Subjects seated on chair and performed reaching under the following six conditions: (1) open eye-firm cushion, (2) close eye-firm cushion, (3) open eye-soft cushion,, (4) close eye-sofl cushion, (5) open eye-wedge cushion, and (6) close eye-wedge cushion. The results included the followings. (1) The reaction time (0.60± 0.20 sec) of the young group was not significantly different from that of the old group, and eye close or different cushions did not make significant difference. (2) The movement time (2.20± 0.88 sec) of the young group was significantly longer than that of the old group (1.42± 0.4lsec), and eye close did not make significant difference, but wedge cushion significantly reduced the movement time. (3) The reaching distance of the young group was slightly longer than that of the old group, and eye close did not make significant difference, but wedge cushion significantly reduced the reaching distance. (4) The center of pressure displacement of the young group was not significantly different from that of the old group, and eye close did not make significant difference, but wedge cushion significantly reduced the center of pressure displacement (5) Wedge cushion caused pelvic posterior tilt for about 2 degree at beginning and about 5 degree at the end of reaching both in young and old groups. (6) Soft cushion caused hip flexion for about 2 degree at beginning
and about 5 degree at the end of reaching both in young and old groups, but eye close did not make any difference. (7) The EMG of latissimus dorsi and T12 paraspinal muscles of the young group were not significantly different from that of the old group, and eye close did not make significant difference, but wedge cushion significantly reduced flAG of latissimus dorsi and T12 paraspinal muscles during initially 50% and fInal 50% of movement time. (8) The EMG of upper trapezius and T4 paraspinal muscles of the young group were not significantly different from that of the old group, and eye close or different cushions did not make significant difference. The conclusions were the young and healthy old subjects did not have significant difference in reaching except the movement time. The visual and somatosensory disturbances did not make significant difference in young and old subjects. Therefore, the preservation in vestibular systems and feet somatosensory inputs may compensate the disturbances of visual and hip somatosensory inputs in young and old healthy adults.
Publisher
臺北市：國立臺灣大學醫學院物理治療學系暨研究所
Type
journal article
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