Sprint Mechanics Differ Between Pre-injury and Return-to-Sport After Hamstring Strain Injury: A Comparative Statistical Analysis with Machine Learning - Siwei Guo; Kewen Liao; Niusha Shafiabady; Muhammad Sakib Khan Inan; Andrea Giovannetti; David A. Opar; Bryan C. Heiderscheit; Silvia Salinas Blemker; Brett Mortensen; Nicholas Port; Yi–Chung Lin (Medicine & Science in Sports & Exercise, 2026)