Surface electromyography (sEMG) is widely used to analyze human movements, including athletic performance. Here, we develop a skin-contact patch consisting of kirigami-based stretchable wirings and conductive polymer nanosheet-based ultraconformable bioelectrodes that can detect sEMG signals from the palm muscle during baseball pitching. We observe differences in the activity of the palm muscle between different types of pitches—fastball and curveball. This sEMG measurement system will enable the analysis of motion in unexplored muscle areas, leading to a deeper understanding of muscular activity during performance in a wide range of sports and other movements.
- Kento Yamagishi
- Takenori Nakanishi
- Toshinori Fujie
