Physiotherapy is a health care profession which provides services to individuals and populations to develop, maintain and restore maximum movement and functional ability throughout life. This includes providing services in circumstances where movement and function are threatened by aging, injury,  disease or environmental factors. Physical therapy is concerned with identifying and maximizing quality of life and movement potential within the spheres of promotion, prevention, treatment/intervention, habilitation and rehabilitation. This encompasses physical, psychological, emotional, and social well being. It involves the interaction between physical therapist (PT), patients/clients, other health professionals, families, care givers, and communities in a process where movement potential is assessed and goals are agreed upon, using knowledge and skills unique to physical therapists. Physical therapy is performed by a physical therapist (PT). PTs utilize an individual's history and physical examination to arrive at a diagnosis and establish a management plan, and when necessary, incorporate the results of laboratory and imaging studies. Electrodiagnostic testing (e.g. electromyograms and nerve conduction velocity testing) may also be of assistance.