This document provides an introduction to kinesiology. It defines kinesiology as the study of human movement, focusing on the mechanical principles and mechanisms involved. Physiotherapists play an important rehabilitation role in treating patients with reduced physical fitness due to injury, illness or aging. Their goals are to relieve pain, improve strength and range of motion, and enhance posture. Rehabilitation aims to help patients achieve maximum physical, social and psychological fitness to regain independence. It involves various therapies like physical, occupational and speech therapy. Biomechanics is the study of living body mechanics, specifically the forces exerted by muscles and gravity on the skeletal structure. It has branches of kinematics, dealing with motion description, and kinetics, dealing