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Obesity-A condition where surplus fat is stored by the body. A person may be considered obese if he/she exceeds the "desirable" weight for his/her height, build, and age by more than 20%.
Occlusion-A blockage; an obstruction to the flow of blood through an artery resulting from a spasm of the vessel or the presence of a clot.
Oil-A type of liquid lubricant; used as lubricants to minimize uncomfortable skin friction
Omega-3 Fatty Acids-Type of polyunsaturated fat, that may help lower the risk of heart attack or stroke. It is found in seafood, especially higher fat fish, such as albacore tuna, mackerel, sardines, lake trout, herring, and salmon.
Omega-6 Fatty Acids-A type of polyunsaturated fat found in vegetable oils, such as sunflower, safflower, corn & vegetable oils.
Oncologist-A doctor who specializes in the diagnosis, treatment, and rehabilitation of individuals suffering with cancer.One Repetition Maximal (1RM)-The maximal amount of weight lifted or moved in one effort. Bench press is typically used for upper body, leg press for lower body.
Open Fracture-Compound fracture.
Opportunistic Invasion-Potentially pathogenic organisms are found on the skin and mucous membranes of nearly everyone that do not cause disease until they have the opportunity, such as in a depressed immunity.
Opposing Muscles-The muscles on the opposite side of a joint that perform the opposite movement of the muscles that are contracting. [e.g. the hamstrings (knee flexors) and the quadriceps (knee extensors)]
Oral-Pertaining to the mouth. Also refers to ingestion through the mouth.
Oral Cancer-Cancer affecting the mouth.
Orchitis-Inflammation (swelling) of a testis (testicle), usually caused by bacteria. It causes pain, swelling, and a feeling of testicle heaviness.
Organ Systems-Composed of two or more organs working together to perform a higher function.
Organism-Living thing composed of many organ systems
Organs-Composed of different tissue that works together to form a structure that performs a specific function.
Origin-The attachment point of a muscle at the fixed point during movement.
Orthotics-A material usually made of plastic or rubber, individually fitted and inserted into everyday footwear to correct foot problems such as flat feet. (e.g. arch supports)
Osteoarthritis-(Degenerative Joint Disease, DJD, OA) A chronic joint disease, particularly weight bearing joints, distinguished by cartilage destruction and joint space narrowing. Characterized by "wear and tear" eventually resulting in pain, joint effusion, and impaired function.
Osteokinematic Movements-The movements of flexion, extension, abduction, adduction, and rotation; also known as physiological movements.
Osteoporosis-A condition in which the progressive deterioration of bone mass occurs. The cause is due to a more rapid destruction than build up of bone cells.
Ovarian Cancer-Cancer of the ovaries. It is the leading cause of death from gynecologic malignancies.
Overload-To place a greater workload on the body than what it is normally accustomed; also known as stimulus.
Over-training-The attempt to do more work than can be physically tolerated. Over-training results from performing activities at an unnecessarily high training volume, training intensity, or both.
Overuse (Injury)-Any injury that has been caused by small, repetitive overloaded forces on the structural and force generating parts of the body. Too much activity that places excessive stress on the body or body part. (e.g. tennis elbow, shin splints, stress fractures, tendinitis)