Biomechanics is that the study of the structure, function and motion of the mechanical aspects of biological systems, at any level from whole organisms to organs, cells and cell organelles, using the methods of mechanics. Sports biomechanics studies human motion during exercise and sports. Physics and therefore the laws of mechanics are applied to athletic performance. The biomechanical principles that are important during this objective are Force-Motion, Range of Motion, Inertia, and Force-Time.