Titre : | Energy sources for exercise in trained animals a comparative approach |
Titre original: | Sources d'énergie dans l'entraînement des animaux - Une approche comparative |
in : | |
Auteurs : | Paolo Cerretelli ; Gabrièle Cortili ; Médecine et Sports Equestres (VIIème congrès des pays francophones; Septembre 1989; Saumur) ; F. Saibene ; Pierre d' Autheville |
Type de document : | texte imprimé |
Editeur : | Saumur : Groupe d'Etude "Médecine des Sports Equestres", 1989 |
Format : | 32 p. / Graphiques, tableaux / 29,7 cm. |
Langues: | Anglais |
Classement équitation : | 170 |
Mots-clés : |
Mots-clés équitation Capacité aérobie maxima ; Coût de la locomotion ; Haute énergie phosphatée ; Seuil anaérobicEquivoc Chien ; Homme ; Lactate |
Résumé : | The role of the different energy sources available for muscular exercise was evaluated comparatively for three athletic species, i.e. horse, dog and man. The level of maximal aerobic powwer (VO2max) are interpreted on the basis of the different species-specific determinants (cardiac output, hematocrit, O2 transport characteristics, etc.). A comparative analysis is also made of the energy cost of aerobic locomotion in man and in the horse showing that 1) at comparable speed, the cost of transport of the horse does not differ from that of man ; and 2) therefore, the possibility by the horse of attaining higher speeds compared to man is only a consequence of his graeter VO2max. With regard to anaerobic metabolism, an evalua tion is made of the muscle energy potential in the qpecies under consideration, based on the concentration of hight hight energy phosphates and glycogen in muscle. Most emphasis is put on the maximum lactacid capacity which plays a role that is particularly important for the horse. In fact, the latter animal, independent of its breed, is characterized by a maximum lactacid O2 debt exceeding by far that of man and of dog. Data on the anaerobic threshold of horses of different breed are also considered and their functional significance discussed in comparison with other species. |