title: Mechanical Energy Relationships in Vaulting with a Fibreglass Pole.
abstract: The performances of the competitors in the polo vault at the 1968 Now Zealand. A.A.A. Championships were studied by means of a motion-picture analysis. For successive stages throughout the best vault recorded by each subject, the subject's kinetic energy of translation, kinetic energy of rotation, potential energy, and total mechanical energy, and the extent of the pole-bend, were computed. Comparison of these parameters between subjects of differing abilities revealed certain characteristics which appeared to be directly associated with the quality of the performance. The best performances were characterised by a pronounced bending of the pole, similar rates of polo-bonding and pole-straightening and marked changes in the subject's potential energy and kinetic energy of translation as the pole straightened.
authors.affiliation: a School of Physical Education, University of Otago , Dunedin , New Zealand.
authors.forename: J G
authors.initials: JG
authors.lastname: Hay
mesh_terms: D004867:Equipment Design; D005898:Glass; D006801:Humans; D007700:Kinetics; D008297:Male; D009038:Motion; D009520:New Zealand; D019876:Sports Equipment; D014142:Track and Field / Q000502:physiology*
chemical_list: C009753:fiberglass