Solicitation of protein metabolism during a judo match and recovery

• Published in: Science & sports 2004-02, Vol.19 (1), p.28-33
• Main Authors: Degoutte, F, Jouanel, P, Filaire, E
• Format: Article
• Language: fre
• ISSN: 0765-1597
• DOI: 10.1016/S0765-1597(03)00162-X

Objective -- Energy solicitation during a judo match and the kinetics of recovery were assessed by measuring the metabolites of oxypurine cascade level and the glycolytic pathway. Methods -- Venous blood samples were taken from sixteen national judo athletes (aged 18.4 +/- 1.6 years), before (T1) and at 3 minutes (T2), 1 hour (T3) and 24 hours (T4) post-match. A 7-day diet record was used to evaluate the values for nutrient intakes. Results -- Nutrient analysis indicated that these athletes followed a low carbohydrate diet. Plasma lactate concentration rose to 12.3 +/- 1.8 mmol l super(1) at the end of the match. An increase in extracellular markers of muscle adenine nucleotide catabolism, urea and creatinine levels was observed at T2 while uric acid levels remained unchanged. Persistent high concentrations of urea were observed during the post- training recovery period for 24 h. Ammonia, hypoxanthine, xanthine and creatinine values returned to their control levels within 12 h of recovery. Uric acid concentrations rose from T3 and did not return to baseline 24 h after the match. Conclusions -- These results showed that a judo match induces mobilisation of protein metabolism.Original Abstract: Objectif -- La sollicitation du cycle des purines nucleotides a ete etudiee lors d'un combat de judo et au cours de la periode de recuperation chez 16 judokas de niveau interregional (18,4 +/- 1,6 annees). Methodes -- Des prelevements sanguins ont ete realises juste avant (T1) et 3 minutes (T2), 1 heure (T3) et 24 heures (T4) apres un combat qui durait 5 min. La frequence cardiaque a ete enregistree en continu lors du combat. Des mesures anthropometriques et une enquete nutritionnelle ont ete egalement realisees. Resultats -- L'enquete nutritionnelle a montre que ces athletes avaient un apport insuffisant en hydrates de carbone. La concentration de lactate a significativement augmente, passant de 1,2 +/- 0,1 a 12,3 +/- 1,8 mmol l super(1) a T2 (p < 0,001). Une augmentation significative des concentrations d'ammoniaque (p < 0,01), de xanthine (p < 0,05), d'uree (p < 0,01) et de creatinine (p < 0,01) a ete egalement observee. Ces valeurs restaient elevees a T3 alors que celles d'acide urique augmentaient dans le meme temps (p < 0,01). Apres 24 h de recuperation, seules les concentrations d'uree et d'acide urique restaient elevees (p < 0,05). Conclusion -- Les resultats obtenus dans cette etude ont montre qu'un combat de judo induisait une sollicitation importante du cyc