Using Miniature Sensors to Make Running Safer on Joints

YEI Technology is using miniature sensors to measure joint impact while running on treadmills and while using cushioning devices in the hopes that this data will see if using such devices would decrease joint impact and reduce the likelihood of injury. The sensor used, the YEI 3-Space™ Wireless, is small enough for volunteers to wear on their knees and ankles without impeding motion and wirelessly sends vibration data to a computer for analysis.

In partnership with the Southern Ohio Medical Center's Life Center in Portsmouth, Ohio, volunteers each wore a YEI 3-Space™ Wireless Sensor while running on two different treadmills identified by Life Center staff as being the least comfortable as reported by users. For each treadmill, volunteers completed short sessions measuring the impact on both ankle and knee joints, while walking and running, and with no shock absorption device and with 2 versions of shock absorption device prototypes. The data was precise enough to easily distinguish between the runners, walking and running gaits, and ankle versus knee joints.

Advancements in sensor technologies, namely micro-electro-mechanical system or (MEMS), have enabled sensors to be smaller, lighter, and use less power than traditional methods of motion analysis. This small footprint makes MEMS sensors well-suited for situations where natural movement outside of a lab are desired and its low-cost allows for single experiment/patient use. The YEI 3-Space™ also comes in in wireless and data-logging versions which allow motion measurement and analysis to move out of the lab and capture data in realistic situations.

Download the case study (.pdf).