Biomechanics is the intersection of biology, physiology, anatomy, physics, mathematics, and chemistry to solve complex problems in medicine and health. It is the science of studying forces acting on the body and the effects they produce. There are four areas of biomechanical inquiries: developmental, exercise, rehabilitative, and occupational. 
Biomechanists quantify, describe, and analyze daily human activities with different methods (high-speed camera, force plates, or wearable technologies) in all the mentioned areas. 
They combine anatomical and biological data with mathematics and physics to study systems in the constant state, in motion or even study their evolution over time. 
These investigations will help to understand the underlying mechanisms and functions resulting in movement patterns. 
With the currently available database of human movement, biomechanists can distinguish and classify normal subjects from pathological problems. 
Overall, time series analysis and nonlinear dynamics analysis have helped coaches and therapists describe the biological and environmental constraints of the movement.