P-3-01-02
BIOMECHANICAL DETERMINANTS OF PUSH-UP HEIGHT IN LONG LEG SITTING OF C6 TETRAPLEGICS
Mizukami M, Kawai N, Kimura T (National Rehabilitation Center for the Disabled, Tokorozawa, Japan)
We studied the predictors of push-up height of C6 tetraplegics in long sitting, using 10 patients with traumatic SCI. The maximum push-up height was measured during push-up by video and analog motion measurement systems (Peak) in the sagittal plane. Also posterior curvature of the spine in long leg sitting and range of motions of the scapulars were calculated using data of the motion measurement systems. Isometric strengths of the scapular abductions and depressions, and the shoulder flexion were examined with hand-held-dynamometer. Multivariate analysis indicated that the significant predictors of maximum push-up height were posterior curvature of the spine and isometric strengths of the scapular abduction (R2=0.87 :P<0.001).
In conclusion, the push-up height was mainly determined by the truncal posture and strength of the serratus anterior muscle in C6 tetraplegics.
P-3-01-03
BIOMECHANICAL DETERMINANTS OF THE MAXIMUM WALKING SPEED OF PATIENTS WITH SPINAL CORD INJURY (SCI)
Yamamoto Y, Kawai N, Tobimatsu Y, Nakamura R.
(National Rehabilitation Center for the Disabled, Tokorozawa, Japan)
The relation between the isokinetic strength for knee extension of the both sides, the sway-path in standing, sensory disorders of the lower extremity and the age, and the maximum walking speed for 10 m distance were examined in 10 patients with SCI aged from 23 to 67 years.
Determinants of the maximum walking speed were estimated by step-wise regression analysis with the following six independent variables; the age, the isokinetic strength for knee extension of the both sides (Cybex II: 30 deg/sec), the sway-path of center of gravity for 10 sec station, the presence or absence of disturbance of sense of touch and that of perception of passive movements of the lower extremity. The result revealed that significant predictors of the maximum walking speed were the sway-path, the isokinetic strength of more severely affected side, and the disturbance of perception of passive movements of the lower extremity (R2=0.863).
In conclusion, the maximum walking speed of patients with SCI were strongly influenced by the muscle weakness of lower extremity and the instability of standing balance.
