P-3-09-18
COMPARISON OF MOTIONS DURING TRANSFER TO BATHTUB BETWEEN HEALTHY ADULTS AND THE AGED
Masaharu Maeda, Hiroyuki Toshima, Yoshitaka Shiba, Shuichi Obuchi (Kitasato University East Hospital, Sagamihara, Japan), Shoji Shimizu, Haruo Taya (Nippon System Gijutsu Co. Ltd. Tokyo Japan)
The motions during transfer to bathtub are very difficult ones for an old handicapped persons and those have a risk such as stumbling. In this study, the motions during transfer to bathtub were compared between the aged and the young adults in the model bathroom used in the previous study by means of three dimensional motion analyzing system, MOA. The five healthy adults used in our previous study were 'also used as the subjects of this study and their motions were compared with 10 old healthy persons (3 males and 7 females ranging in 65-76 years of age, the mean; 70).
The motions during transfer to bathtub of the aged were slower as a whole than those of the young subjects. Concerning the right and left component, the peak of the motion speed was summit at the time immediately before the foot touch to the floor after striding the edge of bathtub followed by speed reducing in the young subjects, whereas for the aged, the peak was observed at the time after the toot touch to the floor, indicating that there is a considerable delay in the speed down in the aged. These results suggested that for the right and left component in the motions during transfer to bathtub, the speed down might be performed in part using both legs, because it is difficult to satisfactorily control the motion speed with only one leg. Therefore, the aged persons have no strength left to perform a well-balanced motion, resulting is frequent stumbling.
P-3-09-19
CENTER OF PRESSURE IN HEMIPLEGIC PATIENTS ON MOVING PLATFORM
Ryouhei Konaka, Yoshiyuki Kajihara, Shigenobu Ishigami (National Defense Medical College, Saitama, JAPAN) and Hideo Tomita (Tokyo Denki University, Saitama, Japan)
Purpose: The purpose of this study was to evaluate the stability of standing posture. We showed the relationship between the COP (center of pressure) on static-standing posture and dynamic-standing posture of hemiplegic patients.
Method: 21 right and 15 left hemiplegic patients who could walk with no assistance and 22 normal adults as control participated in this study. 2 forceplates were putted on a platform which moved back and forth. Subjects stood on those force plates by bare foot, and the feet were 10cm apart and parallel. In static test, platform didn't move and subjects stood on the forceplates at rest for 20 sec. In dynamic test, subjects stood on the forceplates and platform moved back and forth 50 times sinusoidally (amplitude :10cm, frequency: 0.5Hz). The averaged position, area and moving distance of COP for each foot were measured.
Results: The average COP position deviated to forward in dynamic test as compared to static test in each group. Moving distance of COP of both feet were larger in left hemiplegic patients than in right hemiplegic patients. In dynamic test, moving distance and area of COP of the sound foot were larger than those of the affected foot in both hemiplegic groups. They were larger in left hemiplegic group than in right hemiplegic patient group. Moving distance and area of COP distributed bilaterally in equal in control group. In all left hemiplegc patients, those of sound foot were larger than affected foot. But in some right hemiplegic patients, the same tendency was not found.
Conclusion: It was suggested that left hemiplegic patients rather than the right hemiplegic patients stand leaning on their sound side under the dynamic condition.
