This book acts as a compilation of papers presented in the Human Engineering Symposium (HUMENS 2021). The symposium theme, ¿Human-centered Technology for A Better Tomorrow,¿ covers the following research topics: ergonomics, biomechanics, sports technology, medical device and instrumentation, artificial intelligence / machine learning, industrial design, rehabilitation, additive manufacturing, modelling and bio-simulation, and signal processing. Fifty-nine articles published in this book are divided into four parts, namely Part 1¿Artificial Intelligence and Biosimulation, Part 2¿Biomechanics, Safety and Sports, Part 3¿Design and Instrumentation, and Part 4¿Ergonomics.