In rowing a boat is propelled by the force of an oar blade, as it is pushed against the water.
Rowing may be competitive or recreational. It may be done as an individual activity or as a team sport which can vary from two to eight persons. Propulsion may be as a result of a single oar or two oars. In rowing the oar is held in place at a pivot point that is in a fixed position relative to the boat, whereas in other types of rowing such as canoeing or kayaking the oar is not fixed. In racing rowing boats the seats slide to allow the use of the legs to apply power to the oar and the thoracic and lumbar spinal muscles contract to produce extension. In contrast in canoeing and kayaking there is more upper body power and more spinal rotation.