血友病病人膝部的等速運動肌力

The Isokinetic Muscle Strength of Hemophilic Knee

黃麗麗(Li-Li Hwang) ； 賴金鑫(Jin-Shin Lai) ； 沈銘鏡(Ming-Ching Shen) ； 連倚南(I-Nan Lien)

《中華民國物理治療學會雜誌》 14卷 (1989/10) Pp. 16-24

https://doi.org/10.29616/JPTAROC.198910.0003

摘要

The purpose of this study were to use isokinetic dynamometer in studying the peak torques of knee muscles at various speeds of isokinetic exercise and the joint angles when the peak torques occurred, comparing the finding with those of the normal persons, and studying the possible correlated factors influencing the muscle strength. From January, 1987 to December, 1987, twenty-eight severe hemophilic male patients (with a circulating titer of Factor Ⅷ or Factor Ⅸ of less than 1 per cent) were selected and examined in Hemophilia Center, National Taiwan University Hospital. The average age of the patients were 24.3±7.9 year-old. The following data including the age when the diagnosis was confirmed, body height, body weight, knee deformities, radiographic change of knees and the range of motion of the knees were also collected. The isometric strength (angular velocity equals to 0°/sec) and the peak torque of knee muscles at various speeds (30°, 60°, 120°, 180°, 240°, 300°/sec) and the angle of motions when the peak torques occurred were also recorded. The result showed that there was no significant difference in the strength of the right and the left knee muscles (p＞0.05). Both the hemophilic patients and normal persons had the same phenomena that the isometric strength was higher than any isokinetic strength at various setting speeds. It was also found that the isokinetic strength of knee muscles decreased as the testing speed increased, and the peak torques also occurred in the later range of motion either in extension or flexion as the testing speed increased. The peak torque or average torque per kilogram body weight of knee muscles of the hemophilic patients at all set speeds were lower than that of the normal persons especially in the knee extensors that reduced about 50% in average. Hence, the ratio of the torques of flexor to extensor at different speeds were higher than that of the normal persons (p＜0.05). In this study, it was shown that the later the patient was diagnosed, the severer chronic arthropathy change found in the radiographic examination, the more limitation of knee mobility of the patients had, the less strength they would have (p＜.05). If there were deformity in the knees, the strength of the knee extensor will reduced significantly (p＜0.05). A hemophilic patient needs stronger knee strength than the normal person, therefore, to strengthen the knee extensor should be emphasized during the treatment was given. However, it needs further study to find the suitable treatment methods and the effect of therapeutic exercise in the management of the hemophilic patients.

並列摘要

The purpose of this study were to use isokinetic dynamometer in studying the peak torques of knee muscles at various speeds of isokinetic exercise and the joint angles when the peak torques occurred, comparing the finding with those of the normal persons, and studying the possible correlated factors influencing the muscle strength. From January, 1987 to December, 1987, twenty-eight severe hemophilic male patients (with a circulating titer of Factor Ⅷ or Factor Ⅸ of less than 1 per cent) were selected and examined in Hemophilia Center, National Taiwan University Hospital. The average age of the patients were 24.3±7.9 year-old. The following data including the age when the diagnosis was confirmed, body height, body weight, knee deformities, radiographic change of knees and the range of motion of the knees were also collected. The isometric strength (angular velocity equals to 0°/sec) and the peak torque of knee muscles at various speeds (30°, 60°, 120°, 180°, 240°, 300°/sec) and the angle of motions when the peak torques occurred were also recorded. The result showed that there was no significant difference in the strength of the right and the left knee muscles (p＞0.05). Both the hemophilic patients and normal persons had the same phenomena that the isometric strength was higher than any isokinetic strength at various setting speeds. It was also found that the isokinetic strength of knee muscles decreased as the testing speed increased, and the peak torques also occurred in the later range of motion either in extension or flexion as the testing speed increased. The peak torque or average torque per kilogram body weight of knee muscles of the hemophilic patients at all set speeds were lower than that of the normal persons especially in the knee extensors that reduced about 50% in average. Hence, the ratio of the torques of flexor to extensor at different speeds were higher than that of the normal persons (p＜0.05). In this study, it was shown that the later the patient was diagnosed, the severer chronic arthropathy change found in the radiographic examination, the more limitation of knee mobility of the patients had, the less strength they would have (p＜.05). If there were deformity in the knees, the strength of the knee extensor will reduced significantly (p＜0.05). A hemophilic patient needs stronger knee strength than the normal person, therefore, to strengthen the knee extensor should be emphasized during the treatment was given. However, it needs further study to find the suitable treatment methods and the effect of therapeutic exercise in the management of the hemophilic patients.

並列關鍵字

Hemophilia ； Isokinetic strength