In strength training, rowing (or a row, usually preceded by a qualifying adjective — for instance a seated row) is a form of muscular
resistance training exercise that shares many characteristics of rowing a boat without involving water or a boat. When done as a weight-lifting
exercise, its purpose is to exercise the muscles that draw the rower's arms toward the body (latissimus dorsi) as well as those that retract
the scapulae (trapezius and rhomboids) and those that support the spine (erector spinae). When done on a rowing machine, rowing also
exercises muscles that extend and support the legs (quadriceps and thigh muscles). In all cases, the abdominal and lower back muscles
must be used in order to support the body and prevent back injury.
Many other weight-assisted gym exercises mimic the movement of rowing, such as the deadlift, high pull and the bent-over row.
An effective off-season training programme combines both erg pieces and weight-assisted movements similar to rowing, with an
emphasis on improving endurance under high tension rather than maximum strength. -Wiki-