This book covers the changes in musculoskeletal, neurological and cardiopulmonary systems, which are the three pillars of human movement. It examines the causes, processes, consequences, and contexts of physical activity from different perspectives and in different life stages including early childhood to elderly. It goes on to further explain how purposeful movement of the human body is affected by pathological conditions related to any of these major systems. Coverage also includes external and internal factors (such as forces and other stresses) that affect the human growth pattern and development, and throughout lifespan (embryo, child, adult, and geriatrics). The perfect reference for researchers of kinesiology as well as clinicians and students involved in rehabilitation practice. --