Figure 3 (IMAGE) Tohoku University Caption The two identified neural circuits contribute to energy-efficient walking over a wide range of velocities in reflex control: first, the reflex circuit related to the vastus medialis that facilitates forward swing of the leg; second, the reflex circuit related to the vastus medialis and hamstring that inhibit forward swing of the leg. Credit Tohoku University Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.