Shusuke Kusano

Cardiorespiratory endurance in people with cerebral palsy measured using an arm ergometer

OBJECTIVE To determine whether cardiorespiratory endurance, a component of physical fitness, in people with cerebral palsy (CP) is lower than that in able-bodied people, and whether the difference in locomotion of CP patients affects their cardiorespiratory endurance. DESIGN Nonrandomized control trial. SETTING Referred care center. SUBJECTS Twelve men with CP who were independent in daily life and 7 able-bodied control volunteers. INTERVENTION Cardiorespiratory endurance of the subjects was measured with an arm ergometer. MAIN OUTCOME MEASURES Oxygen consumption (VO2), heart rate (HR), and physical working capacity (PWC) measured during arm ergometer rotation. RESULTS The 75%VO2max and 75%HRmax did not differ significantly between CP subjects and control subjects, or between ambulatory CP subjects and wheelchair-bound CP subjects. However, the PWC at 75%HRmax of the CP subjects was significantly lower than that of the control subjects. CONCLUSION Cardiorespiratory endurance does not differ significantly between people with CP and able-bodied people. Type of locomotion does not affect cardiorespiratory endurance. However, the highest PWC performed by the CP subjects was significantly lower than that of the control subjects.

Comparison of the Reaction Time Measurement System for Evaluating Robot Assisted Activities

RAA (Robot Assisted Activities) allow people to feel joy and pleasure and recover through contact with a robot. Considerable research has reported that RAA is useful for elderly persons, children hospitalized in pediatric wards and so on. However no specific evaluation method concerning RAA has yet been established. In this paper, we propose a reaction time measurement system for evaluating RAA. The level of caution or concentration of a subject can be estimated in terms of the reaction time based on visual or acoustic stimuli. We try to evaluate RAA using the variance in the reaction time before and after RAA respectively. We have developed a reaction time measurement system with hardware, following which we compared several reaction time measurement systems concerning performance and operability. We reported the results of comparisons featuring such measurement systems and the basic results of the RAA evaluation experiment using reaction time measurement. The results suggested that selection of the optimal enforcement form in RAA has been enabled through application of this reaction time measurement system.