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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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TRAINING-LEVEL INDUCED CHANGES IN BLOOD PARAMETERS RESPONSE TO ON-WATER ROWING RACES |
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François Denis Desgorces1,2  ,
Marc Testa1 and Cyril Petibois3 |
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1Unité de Formation et de Recherche en Sciences et Techniques des Activités Physiques et Sportives, Université Paris Descartes, Paris, France, 2IRMES, Institut de Recherche bioMédicale et d'Epidémiologie du Sport, Paris, France, 3Université Victor Segalen Bordeaux 2, CNRS UMR 5084, CNAB, Bordeaux, France |
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© Journal of Sports Science and Medicine (2008) 7, 425 - 430 Search Google Scholar for Citing Articles |
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| ABSTRACT | |||
| The study investigated blood markers allowing discriminating physiological
responses to on-water rowing races, notably regarding training volume of
athletes and race duration. College (COL) and national (NAT) rowers performed
a 1000- or 2000-m race. Capillary blood samples obtained before and post-race
allowed an analysis of a wide range of serum parameters. COL rowers had
a lower rowing experience and training volume than NAT. Races induced a
higher lactate concentration increase in NAT compared to COL (10.45 ± 0.45
vs 13.05 ± 0.60; p < 0.001). Race distance (2000 vs. 1000 m) induced
a higher increase in fatty acids (0.81 ± 0.31 vs +0.67 ± 0. 41; p < 0.05)
and triglycerides concentration in NAT (0.33 ± 0.07 vs 0.15 ± 0.09; p <
0.01), but remained comparable between NAT and COL for the 1000-m races.
Amino acids concentrations increased in NAT (0.19 ± 0.03, p < 0.01),
but urea concentration increased only for NAT rowers having performed the
2000-m race (0.72 ± 0.22, p < 0.05). Transferrin concentration decreased
after the 2000-m race (-0.60 ± 0.25, p < 0.05), and concentration changes
of haptoglobin differed between NAT2000 (tendency to be reduced) and COL
(tendency to by enhanced) (p < 0.05). Our results confirmed that the
training level in rowing is associated with higher glycolysis utilization
during maximal 1000- and 2000-m exercise and no difference for similarly
trained subjects at these two distances. Our study also demonstrated that
a 2000-m race could initiate fatty and amino-acid metabolisms in highly
trained subjects. Therefore, these changes in blood parameter responses
to a characteristic rowing exercise highlighted the importance of monitoring
the physiological effects of training in sporting conditions and according
to individual characteristics.
Key words: Energy metabolism, training, intensive exercise, endurance performance. |
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