Does Exit Velocity Come from the Front Foot? Exploring Driveline Motion Capture Data

License: Motion capture data from Driveline OpenBiomechanics Project under CC BY-NC-SA 4.0 (non-commercial, share-alike). Citation: Wasserberger KW, Brady AC, Besky DM, Jones BR, Boddy KJ. The OpenBiomechanics Project: The open source initiative for anonymized, elite-level athletic motion capture data. (2022). Derivative works (graphs, GIFs) in this article follow the same license. Commercial use by professional sports organization employees is restricted. Note: This is an exploratory analysis with n=40. I use "suggests" and "trend" rather than definitive claims. The Question Two hitters. Almost the same bat speed. But one hits the ball 20 mph harder. Why? I tried to answer this using 40 hitters' worth of professional-grade motion capture data from Driveline OpenBiomechanics Project. The short answer: bat speed alone explained almost nothing. Front leg mechanics did. → GitHub: https://github.com/yasumorishima/baseball-cv The Data Driveline OpenBiomechani