Inertial sensors have become pivotal in capturing human movement within various contexts, enhancing the accuracy and depth of motion analysis. This comprehensive review explores the evolution and applications of this technology:\n- Extensive examination of sensor technologies and methodologies used.\n- Dives into machine learning techniques to improve measurement precision.\n- Overview of applications ranging from healthcare to sports analytics.\n- Highlights innovative methodologies to reduce measurement errors and improve data reliability.\nThe ongoing developments in this sector signify a major leap in how movements are studied in real-life settings, with significant implications for both research and practical applications.