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

K. L. Merry, M. Glaister, G. Howatson, K. Van Someren

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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 signiicantly greater (P<0.001) than i . VO2max (3 min) (340±31 W vs. 299±44 W). Time to exhaustion (TTE) measured during CONT3 was signiicantly longer (P<0.001) than CONT1 (529±140 s vs. 214±65 s). Time spent at . VO2max was signiicantly longer (P=0.036) during CONT3 than CONT1 . (146±158 s vs. 11±20 s), and time spent at ≥95% VO2max was signiicantly 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 inluenced by the initial measurement of i . VO2max.

Original languageEnglish
Pages (from-to)1091-1098
Number of pages8
JournalJournal of Sports Medicine and Physical Fitness
Volume55
Issue number10
Publication statusPublished - Oct 2015
Externally publishedYes

Keywords

  • Exercise
  • Exercise Test
  • Oxygen

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