High-performance jumping movements by pendulum-type jumping machines

On vertical jumping movements of humans, swings of arms and counter movements of legs are essential. In this paper, the swings of arms are focused, and two pendulum-type jumping machines are presented. The aim of our research is to show that the presented mechanism, to which the swings of arms am applied, is effective to perform jumping movements. These pendulum-type jumping machines demonstrate abilities of jumping up, soft landing, and going up and down stairs. Consequently, it is concluded that the swings of arms will contribute toward high-performance jumping movements