The purpose of this study was to examine the validity of the forces exerted on the curling brush devised with strain gauges and angular velocity sensors. Force data obtained from the devised brush were compared with data obtained from the force plates. Mean values of the vertical forces during the sweeping were 185 N for the brush and 187 N for the force plates, respectively, and there were no significant differences between them. The horizontal forces were 38 N for the brush and 37 N for the force plate, respectively, and there were no differences between them. There were significant correlations (p<0.001) between the forces exerted on the brush and the ground reaction forces. In this study, more valid force data during the sweeping were obtained by using the device compared to our previous study.
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