Key points from article :
Researchers at Northwestern University, led by John Rogers, have developed a wearable elastic band that measures sweat acidity to monitor physical exertion.
The band, which can be worn on the wrists or ankles, is equipped with color-changing sensors that provide real-time feedback on how hard muscles are working. This innovation offers a non-invasive method to monitor lactate levels, which typically rise during intense physical activity. Lactate buildup signals when a person is nearing their physical limit, often leading to muscle fatigue and soreness.
Currently, athletes and workers in physically demanding jobs, like construction, rely on blood tests to measure lactate, which involves a finger prick. The new band aims to provide a more convenient, non-invasive alternative. By tracking pH levels in sweat, the device alerts users when it's time to rest or, conversely, when they haven’t worked hard enough. The band is designed to help prevent overexertion, improve safety, and enhance training efficiency.
This technology could benefit athletes aiming to optimize their performance and manual laborers who need to avoid overworking. The device provides immediate feedback, allowing users to make quick decisions about their activity levels, preventing injuries and long-term fatigue. The team hopes to make the device widely available for both professional and everyday use, making physical activity safer and more efficient for everyone.
