Rotational speed around the longitudinal axis of the javelin in javelin throw competitions

Abstract

Rotation around the longitudinal axis of the javelin has been suggested to affect flight distance in the javelin throw. However, only one study (Terauds, 1978) has provided data on this possible effect in competition. In the present study, the rotational speed around the longitudinal axis at release was measured in the men’s javelin throw at three collegiate competitions. In 133 throws by 38 throwers for which measurements were available, the relationship between rotational speed around the longitudinal axis and throw distance (competition results) was examined. As a result, it was found that the mean rotational speed around the longitudinal axis was 21.0 ± 4.9 rps, which was comparable to the values reported by Terauds (1978). Also, it was inferred that the rotational speed around the longitudinal axis was not intentionally controlled by the throwers and that it may affect the variability of the javelin’s posture in flight. Furthermore, the rotational speed around the longitudinal axis may be related to the success or failure of the throw.