Home > Riviste > The Journal of Sports Medicine and Physical Fitness > Fascicoli precedenti > The Journal of Sports Medicine and Physical Fitness 2015 October;55(10) > The Journal of Sports Medicine and Physical Fitness 2015 October;55(10):1091-8

ULTIMO FASCICOLO
 

JOURNAL TOOLS

eTOC
Per abbonarsi
Sottometti un articolo
Segnala alla tua biblioteca
 

ARTICLE TOOLS

Estratti
Permessi
Per citare questo articolo

 

ORIGINAL ARTICLES  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2015 October;55(10):1091-8

Copyright © 2015 EDIZIONI MINERVA MEDICA

lingua: Inglese

The influence of evaluation protocol on time spent exercising at a high level of oxygen uptake during continuous cycling

Merry K. L. 1, Glaister M. 2, Howatson G. 3, 4, Van Someren K. 5

1 School of Science, University of Derby, Derby, UK; 2 School of Sport, Health and Applied Science, St Mary’s University, Twickenham, UK; 3 Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon -Tyne, UK; 4 Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom, South Africa; 5 GlaxoSmithKline Human Performance Laboratory, Brentford, UK


PDF


AIM: This study evaluated the effects of protocol variation on the time spent exercising at ≥95% .VO2max during cycle ergometer trials performed at the exercise intensity associated with .VO2max (i .VO2max).
METHODS: Nine male triathletes (age: 32±10 years; body mass: 73.3±6.1 kg; stature: 1.79±0.07 m; .VO2max: 3.58±0.45 L.min-1) performed four exercise tests. During tests 1 and 2, participants performed a maximal incremental cycle ergometer test using different stage durations (1 min and 3 min) for the determination of i .VO2max (1 min) and i .VO2max (3 min). During tests 3 and 4, participants performed a continuous bout of exhaustive cycling at i .VO2max (1 min) (CONT1) and i .VO2max (3 min) (CONT3).
RESULTS: i .VO2max (1 min) was significantly greater (P<0.001) than i .VO2max (3 min) (340±31 W vs. 299±44 W). Time to exhaustion (TTE) measured during CONT3 was significantly longer (P<0.001) than CONT1 (529±140 s vs. 214±65 s). Time spent at .VO2max was significantly longer (P=0.036) during CONT3 than CONT1 (146±158 s vs. 11±20 s), and time spent at ≥95% .VO2max was significantly longer (P=0.005) during CONT3 than CONT1 (326±211 s vs. 57±51 s).
CONCLUSION: These results show that when exercising continuously at i .VO2max, time spent at ≥95% .VO2max is influenced by the initial measurement of i .VO2max.

inizio pagina