Imagine a world where even the frailest individuals can walk further, faster, and with less effort—no cane, no walker, just a lightweight pair of robotic shorts. The WalkON system, developed by researchers at the Technical University of Munich (TUM), is turning this vision into reality, offering powered support that reduces the physical strain of walking and encourages mobility for people of all ages.
Designed to reduce the effort needed to walk, the shorts aim to improve mobility and health, particularly for older adults or individuals with physical frailties. By using motorized assistance, WalkON helps users expend significantly less energy during walking, akin to the effect of an electric bike for cyclists.
“You can walk slowly with the shorts, but you can also jog,” explains TUM Professor Lorenzo Masia. “We have developed a system that encourages people to move more.”
Energy Savings and User Benefits
The energy efficiency of the robotic shorts is impressive. For example, when a young person walks 500 meters uphill wearing the shorts, their metabolic energy expenditure is reduced by 18% compared to unaided walking. Older adults walking 400 meters on level ground experience a 10% reduction, equivalent to shedding six to ten kilograms of body weight. This energy-saving capability not only makes walking easier but also encourages sustained mobility for users who may otherwise face physical limitations.
The system is particularly beneficial for older adults, helping them stay active and independent longer. A questionnaire completed by users showed they felt a strong sense of control while using WalkON, with a rating of over 6 on a 7-point scale. Professor Masia believes this feature is crucial: “It is especially important for older people to feel safe.”
How WalkON Works
The robotic shorts use two artificial tendons attached from the thighs to a waist belt, which relieve strain on the hip flexors. A built-in measuring device monitors the hip angle and velocity, signaling the motors to activate during the swing phase of walking. The system automatically adapts to the user’s speed and leg weight, providing personalized support without the need for manual adjustments. According to doctoral researcher Enrica Tricomi, WalkON is ready to use in minutes, making it a true plug-and-play solution.
Unlike rigid exoskeletons found in outdoor shops, WalkON is lightweight, soft, and compact—similar to clothing rather than a frame. The entire system is no larger than a small backpack, offering unmatched convenience and comfort.
Health and Independence Boost
Masia sees great potential for WalkON in helping people with conditions such as heart or lung disease. Walking with robotic assistance can improve metabolism and potentially alleviate some symptoms of these illnesses. The added mobility and independence contribute to a better quality of life, enabling users to remain active and self-sufficient for longer.
A Vision for the Future
The researchers envision future exoskeletons designed for leisure activities and outdoor adventures. “In a few years, you will be able to buy a pair of shorts, attach a motor, plug in two cables, and go hiking in the mountains,” says Masia. Tricomi highlights the versatility of WalkON, which has been refined over four years into its current form. With further development, the team hopes to create modular systems tailored to individual needs, making robotic assistance accessible to a wider audience.
Original Story via: Robotic trousers help people to walk – TUM
