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

Merry, KL and Glaister, Mark and Howatson, Glyn and Van Someren, Ken A. (2015) The influence of evaluation protocol on time spent exercising at a high level of oxygen uptake during continuous cycling. The journal of sports medicine and physical fitness. ISSN 0022-4707

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Official URL: http://europepmc.org/abstract/med/25303075

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 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.

Item Type: Journal Article
Subjects: 500 Natural sciences & mathematics > 571 Physiology & related subjects
700 The arts; fine & decorative arts; recreation > 796 Athletic & outdoor sports & games
School/Department: School of Sport, Health and Applied Science
Depositing User: Kevin Sanders
Date Deposited: 08 Sep 2016 15:14
Last Modified: 08 Sep 2016 15:14
URI: http://research.stmarys.ac.uk/id/eprint/1188

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