Falls are a major health problem for older adults, and losing balance can have serious consequences.
As people age, muscles may become weaker, eyesight can change, and the brain may become slower at combining information from the eyes, inner ears, muscles, and joints. Together, these changes can make it harder to stay steady while standing or walking.
A fall can cause broken bones, head injuries, hospital stays, and a loss of confidence. Some older people become afraid of falling again and begin moving less, which can weaken their muscles even further. Finding simple ways to improve balance is therefore an important part of helping people remain active and independent.
Balance training is already used in rehabilitation and fall-prevention programs. One useful approach involves creating small, unexpected disturbances that force a person to quickly adjust their posture. With practice, the body can become better at making the rapid corrections needed to avoid a fall.
The problem is that equipment used for this type of training can be large, expensive, and difficult to operate. That can limit its use to hospitals, laboratories, or specialized rehabilitation centers. Researchers in Japan have now developed a wearable alternative that could make this kind of exercise easier to access.
Assistant Professor Masataka Yamamoto and colleagues at Tokyo University of Science created a system called the Wearable Balance Exercise Device, or WBED. It is worn on the upper body in a way similar to suspenders. The lightweight design allows the user to move without being attached to a large training machine.
The device contains two small artificial muscles that create gentle sideways forces. These forces briefly disturb the user’s balance, encouraging the body to respond and return to a stable position. Repeating this process provides practice for the muscles and nervous system involved in controlling posture.
To investigate whether the idea worked, the researchers tested the device in 18 healthy men. Participants were divided into two groups, with one group completing exercises using the working device and the other using a version that did not provide the same balance disturbance. Their ability to respond to unexpected movements was measured before and after training.
The people who trained with the working device became better at controlling their posture when their balance was disturbed. The results suggest that repeated exercise with the wearable system can improve the body’s ability to react to sudden sideways forces.
The technology could eventually have important uses in rehabilitation and fall prevention. Because the system is wearable and portable, it may offer a more convenient way to provide balance exercises than traditional machines. In the future, this could potentially allow some training to take place in community settings or even at home under appropriate guidance.
However, the early results should be interpreted carefully. The study involved only 18 healthy male participants rather than older adults who were already at high risk of falling. Larger studies involving seniors and people with balance difficulties will be needed before researchers can determine whether the device actually reduces falls in everyday life.
The technology may also have uses beyond older adults. Athletes, rehabilitation patients, and others who need strong balance and rapid postural responses could potentially benefit from similar training. Researchers will need to explore how the device performs in different groups and how much training is needed to produce lasting improvements.
The study was published in the IEEE Journal of Translational Engineering in Health and Medicine. The research offers an early look at how a relatively simple wearable system might one day make advanced balance training easier to use and more widely available.
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