Visual Biofeedback of Force Information for Eccentric Training of Hemiplegic Patients.

Motor learning issues for hemiplegics not only include motor impairments such as spastic paralysis, but reportedly also an inability to appropriately recognize somatic sensations. In this regard, biofeedback of movement information through visual information and auditory information has been found effective as a method for drawing attention to appropriate somatic sensations. In this context, here, we propose a novel eccentric training system utilizing visual biofeedback of force information. We first develop a compact and highly portable rehabilitation robot for home use. The robot estimates the force on the tiptoe without the use of a force sensor, and a display connected to the robot presents the force information to the trainee. Clinical trials with two chronic hemiplegics have been conducted. The results show that the timed up and go tests of both trainees are shortened after training twice a week for three weeks (six times in total). Simultaneously, the co-contraction index scores of the tibialis anterior and gastrocnemius muscles decrease. These findings in conjunction with previous results suggest that training with visual biofeedback of force information may enhance reciprocal inhibition of the tibialis anterior muscle and reduces co-contraction.

Control with Adjusted Pulse Frequency and Amplitude in Functional Electrical Stimulation.

In this paper, we describe the control of a body using functional electrical stimulation (FES) by adjusting pulse amplitude and frequency. FES is a technique used in the rehabilitation of spinal injury patients and application development for healthy people. However, control using the FES involves a delay time, resulting a high-frequency vibration (called chattering). In this paper, we propose that the control performance can be improved by adjusting the frequency in addition to the conventional pulse amplitude adjustment. In experiments, target values were controlled using subjects, and the performance of the proposed method was verified. Results confirmed that chattering is suppressed by the proposed method.

An analysis of the factors contributing to a reduction in the incidence of pulmonary complications following an esophagectomy for esophageal cancer.

BACKGROUND: Pulmonary complications occur most frequently following a transthoracic esophagectomy for esophageal cancer and would get to be lethal occasionally. In this study, we sought to determine the effect of respiratory physiotherapy, corticosteroid administration, and the use of the video-assisted thoracoscopic (VATS) esophagectomy with a small thoracotomy incision, on the incidence of pulmonary complications following a transthoracic subtotal esophagectomy. MATERIALS AND METHODS: Approximately 184 patients who had undergone a right transthoracic subtotal esophagectomy for squamous cell carcinoma of the thoracic esophagus were studied. To reduce the incidence of pulmonary complications, we performed clinical trials using respiratory physiotherapy, corticosteroid administration, and the VATS-esophagectomy surgical technique. RESULTS: The independent risk factors for pulmonary complications in the multivariate logistic regression analysis were not administering corticosteroids, blood loss greater than 630 ml, and not providing respiratory physiotherapy. In addition, the use of a small surgical incision, less than 10 cm, for the thoracotomy had no effect on the prevention of pulmonary complications. CONCLUSIONS: We concluded that patients with thoracic esophageal cancer could undergo a three-field dissection in comparative safety if the patients were provided with corticosteroid medication in the perioperative period, if the patients received sufficient respiratory physiotherapy, and if surgical blood loss was reduced.