Determinants of performance in 1,500-m runners. (Articolo in rivista)

Type
Label
  • Determinants of performance in 1,500-m runners. (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s00421-011-2251-2 (literal)
Alternative label
  • Ferri A. 1,2, Adamo S. 1, La Torre A. 3, Marzorati M. 4, Bishop D.J. 5, Miserocchi G. 1 (2012)
    Determinants of performance in 1,500-m runners.
    in European journal of applied physiology (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ferri A. 1,2, Adamo S. 1, La Torre A. 3, Marzorati M. 4, Bishop D.J. 5, Miserocchi G. 1 (literal)
Pagina inizio
  • 3033 (literal)
Pagina fine
  • 3043 (literal)
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  • 112 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Pubblicato on-line: 17 Dicembre 2011 Corresponding author: A. Ferri (alessandra.ferri@unimib.it) IF 2010: 2,214 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • PubMe (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Department of Experimental Medicine, Laboratory of Clinical Physiology and Sport Medicine, University of Milano-Bicocca, Monza. 2. Dipartimento di Medicina Sperimentale, Università degli Studi di Milano-Bicocca, Monza. 3. Department of Sport, Nutrition and Health Sciences, University of Milan, Milano. 4. IBFM-CNR, Segrate (MI). 5. Institute of Sport, Exercise and Active Living (ISEAL) and School of Sport and Exercise Science, Victoria University, Melbourne (Australia) (literal)
Titolo
  • Determinants of performance in 1,500-m runners. (literal)
Abstract
  • Our aim was to investigate the relationship between physiological variables (not previously studied) and performance in elite 1,500-m runners. We assessed eight male athletes with an average personal best time of 233.3 ± 6.9 s (110% of the world record) for the 1,500-m race. Ventilatory measurements, maximal oxygen consumption VO2max maximal vastus lateralis muscle deoxygenation (?[deoxy(Hb+Mb)])max via near-infrared spectroscopy (NIRS), and maximal velocity (V (max)) were obtained during an incremental treadmill test. During subsequent constant-speed exercise at Vmax, we determined the time to exhaustion (Tlim), end-exercise blood lactate concentration ([La]b(max)), VO2 and ?[deoxy(Hb+Mb)] kinetics parameters. The mean VO2max, [La]b(max) and Vmax were 70.2 ± 3.9 mL kg(-1) min(-1), 12.7 ± 2.4 mmol L(-1), 21.5 ± 0.5 km h(-1), respectively. VO2 at Vmax showed a significant negative correlation with Tlim, whereas [La]b(max) was positively correlated with Tlim. Race speed was found to significantly correlate with ?[deoxy(Hb+Mb)](max) (79% of maximal value obtained during a transient limb ischemia), ?[deoxy(Hb+Mb)] slow component (22.9 ± 9.3% of total amplitude) and [La]b(max) at Vmax. [La]b(max) at Vmax was also significantly correlated with ?[deoxy(Hb+Mb)] slow component, suggesting a greater release of oxygen from the hemoglobin due to the Bohr effect. We conclude that both the maximal capacity of muscle to extract O2 from the blood and the end-exercise blood lactate accumulation are important predictors of best performance in 1,500-m runners. (literal)
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