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.
Ferri, A., Adamo, S., La Torre, A., Marzorati, M., Bishop, D., & Miserocchi, G. (2012). Determinants of performance in 1,500-m runners. EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY, 112(8), 3033-3043 [10.1007/s00421-011-2251-2].
Citazione: | Ferri, A., Adamo, S., La Torre, A., Marzorati, M., Bishop, D., & Miserocchi, G. (2012). Determinants of performance in 1,500-m runners. EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY, 112(8), 3033-3043 [10.1007/s00421-011-2251-2]. | |
Tipo: | Articolo in rivista - Articolo scientifico | |
Carattere della pubblicazione: | Scientifica | |
Presenza di un coautore afferente ad Istituzioni straniere: | Si | |
Titolo: | Determinants of performance in 1,500-m runners | |
Autori: | Ferri, A; Adamo, S; La Torre, A; Marzorati, M; Bishop, D; Miserocchi, G | |
Autori: | ||
Data di pubblicazione: | 2012 | |
Lingua: | English | |
Rivista: | EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s00421-011-2251-2 | |
Appare nelle tipologie: | 01 - Articolo su rivista |