A powered ankle exoskeleton could make running easier

Engineers at Stanford University, funded by the National Science Foundation, are developing an ankle exoskeleton to enhance running efficiency and enjoyment. The device, tested on experienced runners, offers motor-powered and spring-based assistance, reducing energy expenditure by 25% when powered. Although not yet tested untethered, it could potentially increase speed by 10%. The exoskeleton reduces the workload on calf muscles, making running easier and more enjoyable. The team is optimistic about creating an effective untethered version, with a 15% improvement in energy costs over normal shoes, offering significant benefits for runners.

What is the primary goal of the ankle exoskeleton developed by Stanford engineers?

• To increase the weight carried by runners

• To replace traditional running shoes

• To improve the running experience and promote activity

• To make running more challenging

What are the two modes of running assistance tested by the team?

• Motor-powered and spring-based

• Electric and solar-powered

• Hydraulic and pneumatic

• Manual and automatic

How much reduction in energy was observed when using the powered exoskeleton?

• 25%

• 15%

• 10%

• 30%

What is the expected increase in speed with untethered devices?

• 15%

• 10%

• 5%

• 20%

What improvement in energy costs was noted compared to running in normal shoes?

• 10%

• 15%

• 20%

• 25%