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http://dx.doi.org/10.5352/JLS.2009.19.12.1712

The Effect of Duration Protocols on VO2max and Presence of Plateau  

Kim, Do-Yeon (Department of Physical Education, Kyung-Sung University)
Yoon, Byung-Kon (Department of Special Physical Education, Dong-Eui University)
Publication Information
Journal of Life Science / v.19, no.12, 2009 , pp. 1712-1717 More about this Journal
Abstract
The purpose of this study was to compare $VO_2$max, maximal power output, and presence of $VO_2$ plateau across 4 protocol durations (5, 8, 12, and 16 min) during incremental cycling exercise to $VO_2$max. Twenty moderately to highly trained subjects ($24.9{\pm}6.6$) participated in the study. The mean $VO_2$max in the 5-min ($3.55{\pm}0.80\;l/min$) and 8-min ($3.66{\pm}0.88\;l/min$) duration protocols had higher and significantly higher mean value in the 8-min duration protocol compared to the 12-min ($3.49{\pm}0.76\;l/min$) and 16-min ($3.45{\pm}0.73\;l/min$) duration protocols. The AMPO across four protocols showed a significant difference. The AMPO for the 5-min protocol was 12%, 24%, and 35% higher than AMPO for the 8-min, 12-min and 16-min protocols. The presence of plateau was 12.5% for the 5 min protocol, 56.25% for the 8 min protocol, 37.5% for the 12 min protocol, and 56.25% for the 16 min protocol. This study indicates that the short duration protocol (<8 min) is a more valid measurement for $VO_2$ max than optimal duration protocol (8-12 min) in moderate to highly trained individuals on the cycle ergometer.
Keywords
Incremental exercise; maximal power output; cycle ergometer; plateau;
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