The paper deals with the analysis the golf swing using a triple pendulum model and a simple class of feasible trajectories for the joints. Many tasks in sport are not specified in term of equivalent joint trajectories but mainly with boundary conditions of joint position and velocity (e.g. weight lifting, punching, swinging in golf). In such tasks even if the ’optimal’ trajectory is not a-priori known, some properties can be however inferred and therefore translated in the shape of the representing functions. For the golf swing, the influence of the joints’ trajectory as well as that of the initial posture is analyzed with respect to the applied torques and impact velocity.