The frequency of abdominal injury is rising. In an analysis of 1,354 cases of closed abdominal trauma sustained during a 30-year period (1950-1979) in Skaraborg County, Sweden, a distinct increase was found in the numbers associated with sporting activities. The severity of the injuries caused by sports likewise showed an increase. The representation of injured organs was of the same order as in the total series of closed abdominal injuries. An analysis of the 136 cases of sports-associated injury is presented with regard to cause and type of the injuries, diagnosis and prognosis.