Walking is something many people do without thinking. However, as we grow older, walking can become more difficult. Muscles become weaker, balance may decline, and reaction times often become slower.
These changes increase the risk of falls, which are one of the leading causes of injury, disability, and loss of independence among older adults.
Even a single fall can lead to broken bones, long hospital stays, and a fear of walking that makes people even less active. Because of this, researchers are constantly searching for new ways to help older adults walk more safely and confidently.
A research team at the University of Maine has now developed an interesting wearable device that could make walking easier by focusing on a part of the body that many rehabilitation programs overlook—the arms. Their findings were published in the Annals of Biomedical Engineering.
Most walking therapy focuses on strengthening the legs or improving foot placement. While these approaches are important, the researchers wondered whether improving arm movement could also improve the way people walk.
Although many people rarely think about it, swinging the arms naturally while walking is an important part of keeping the body balanced. Arm movements help the body stay stable, improve coordination between the upper and lower body, and even reduce the amount of energy needed to walk.
The new device is small, lightweight, and comfortable enough to be worn on the upper arms. Instead of using motors or forcing the arms to move, it provides gentle vibrations known as haptic cues.
These vibrations act as simple reminders, telling the wearer when it is time to swing an arm forward. The timing matches the person’s own walking rhythm, encouraging a smoother and more natural arm swing.
The project was led by Ph.D. candidate Ines Khiyara, who studies mechanical engineering with a focus on biomechanics and biorobotics. She believes that improving arm movement could become an easy and practical way to help many older adults maintain their mobility and independence.
This idea could be especially valuable in places with large aging populations, but it may also benefit seniors around the world.
To see whether the device really worked, the researchers tested it with 20 volunteers between the ages of 65 and 92. The average participant was 73 years old. Each volunteer wore the device while walking. As they moved, the gentle vibrations reminded them when to swing their arms.
The results were encouraging. Participants quickly began moving their arms and legs in a more coordinated way.
Their walking became smoother and faster, and many of them said they felt steadier and more confident while wearing the device. Better coordination between the arms and legs can improve balance, making walking safer and reducing the risk of falling.
The study was carried out with mechanical engineering professor Babak Hejrati from the University of Maine and health sciences professor Ben Sidaway from Husson University. Together, the team hopes this technology can eventually move beyond research laboratories and become something older adults can use in everyday life.
One of the biggest advantages of the device is its simplicity. It is designed to be affordable, lightweight, and easy to wear without complicated equipment.
The researchers believe it could eventually be used at home as part of daily exercise or rehabilitation programs. Physical therapists may also use it to help patients recovering from illness, injury, or surgery improve their walking ability.
The arm-guiding device is only one part of a much larger project. The research team is developing a full-body wearable robotic system that could support safe walking practice at home. This future system is expected to help users improve the coordination of their entire body while reducing the need for constant supervision in a clinic.
The researchers are also studying how the brain controls arm and leg movements during walking. By learning more about how the nervous system coordinates movement, they hope to develop even better technologies for older adults and for people living with conditions that affect mobility.
Although more research involving larger groups of people is still needed, the early results are promising. This simple wearable shows that small changes in the way we move our arms may have a surprisingly large impact on balance, walking ability, and confidence.
If future studies continue to show positive results, this technology could help many older adults stay active, independent, and safer for longer.
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The study was published in the Annals of Biomedical Engineering.
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