抄録
The purpose of this study was to calculate the propulsive force exerted by a forearm in front crawl swimming experimentally. The subject was a male swimmer (height : 1.67m, weight : 61.0kg, age : 23.3yrs, record of 50m Fr. : 26.2sec). The trial was front crawl swimming without kicking in swimming flume, which was set the flowing velocity to 1.2m/s. The pressures on the swimmer's left hand (2 points) and forearm (12 points) were measured during the trial. The attitudes of the left hand and forearm were calculated by movie analysis. The hydrodynamic force exerted by the hand and forearm was estimated. The maximal propulsive force exerted by the forearm was 38.1N and the hand was 81.9N. It was suggested that the forearm would contribute the propulsion in front crawl swimming, although the observed propulsive force exerted by forearm was less than half of propulsive force by hand.
