[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[Purpose] The purpose of this study is to investigate the kinematic and kinetic characteristics ofturnaround motion. [Methods] The ten healthy young males performed a turnaround motion to 180°targets (at Comfortable and Max speed conditions) while standing on a horizontal plane facing. Theturnaround motion was recorded by using the motion analysis system, force plates and surfaceelectromyography (EMG). EMG data were collected from twelve muscles (including the left andright muscles of the external oblique, erector spinae, tensor fasciae latae (TFL), gluteus maximus(GM), biceps femoris (BF), and soleus). [Results] The center of gravity and center of pressuredisplacement were inconsistent in all the participants. There was a nonlinear relationship betweenthe craniocervical and thoracolumbar angle coordination, while the thoracolumbar and pelvic anglecoordination had a linear relationship at both speed conditions. There was an evident increasing in EMG amplitude only in the TFL of the turnaround side, and BF of the non-turnaround side at bothspeed conditions. There was no evident increasing in the GM activity amplitude. [Conclusions] Thepresent results demonstrated that the whole-body movement performed on horizontal movement wascontrolled by the muscle torque dominance, but a possible involvement of moment of the coupleforce was also suggested.

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We investigated whether active assistive exercise using the Hybrid Assistive Limb (HAL^®-SJ) could improve muscle strength performance characteristics in patients with cerebral infarction during Kaifukuki rehabilitation period. The patient was a 72-year-old man diagnosed with hemiplegia due to cerebral infarction. The study used an AB single-case design, alternating between traditional physiotherapy（Phase A）and HAL^®-SJ (Phase B), with each phase lasting for 10 days. The knee angular velocity and SIAS-motor showed improvement following Phase B. However, there was no significant improvement in the knee extensor muscle strength and Motor-FIM scores on the paralyzed side throughout Phase A and B. Active assistive exercise using HAL^®-SJ in patients with hemiplegia may be effective in providing the dynamic characteristics of muscle strength.

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[Objective] To investigate the usefulness of lumbar pelvic motion in the sagittal plane for perceptual leg length difference (PLLD) after total hip arthroplasty (THA) based on a case study. [Case presentation] A female patient in her 60s with end-stage left hip osteoarthritis who presented with pain and decreased gait function underwent left THA. Prominent PLLD, pain, and limited hip internal rotation range of motion were observed postoperatively on day 3. Thus, in addition to the usual physical therapy, intervention focused on trunk lateral flexion exercises was performed. Her pain and hip adduction range of motion improved postoperatively on day 8; however, her pelvic lateral tilt to the side of the surgery, lumbar kyphosis and posterior pelvic tilt range of motion in the sitting position were limited, and PLLD persisted. [Progress] The intervention method was changed to trunk flexion and extension exercises in the sagittal plane in addition to the usual physical therapy, on postoperative day 9. The patient’s pelvic lateral tilt and PLLD improved, and the mobility of herlumbar kyphosis and pelvic tilt in the sitting position increased postoperatively on day 14. [Conclusion] Lumbar pelvic motion in the sagittal plane may be useful in dealing with patients with PLLD post-THA.

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[in Japanese]

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