Korean Shirt Exoskeleton Helps Teens Lift 34 Pounds

Fifteen-year-old Myung Ha-yul thought simple tasks like combing his hair would become impossible as his Duchenne muscular dystrophy progressed. Now, thanks to a shirt that functions like wearable muscles, he's lifting his arms with ease.

Engineers at South Korea's Korea Institute of Machinery and Materials created a soft exoskeleton that slips on and off like regular clothing. Weighing less than two pounds and costing thousands less than rigid, motor-driven alternatives, it's changing what's possible for people with degenerative muscle conditions.

The secret lies in threads thinner than half a human hair. These threads are made from shape memory alloy, a material that contracts to a "remembered" shape just like natural muscle tissue. When the fabric contracts, it mirrors the movement of lifting an arm through the shoulder joint.

The results speak for themselves. Tests show the shirt takes between 40% and 57% of the strain off the wearer's muscles. On its own, the fabric can lift up to 34 pounds, and when combined with a human arm's remaining strength, it restores the capacity for basic daily activities.

Myung participated in trials at Seoul National University Hospital and immediately noticed the difference. "It felt amazing because it was light and easy to wear, just like clothing," he told South Korea's JoongAng Daily. "I could lift my arms with much less effort."

The shirt pairs with a modest nylon harness that holds the electrical components. Unlike bulky exoskeletons that announce themselves, this innovation disappears under regular clothes. Users can maintain their dignity and independence without drawing unwanted attention.

The Ripple Effect

Dr. Lee Woo-hyung, a professor of rehabilitation medicine at Seoul National University Hospital, emphasized what makes this breakthrough special. Patients can dress themselves while receiving active muscle support that leads to real functional improvement.

The development received funding from the Child Cancer and Rare Disease Project, launched in May 2021 with a $204 million donation from the family of late Samsung chairman Lee Kun-hee. That investment is now paying dividends for families facing devastating diagnoses.

For caregivers like Myung's parents, the shirt offers something priceless: watching their son regain abilities doctors said he might lose forever.