University of Hertfordshire

From the same journal

  • Daniel Muniz-Pumares
  • Charles Pedlar
  • Richard Godfrey
  • Mark Glaister
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Original languageEnglish
Number of pages7
Pages (from-to)1-7
JournalThe Journal of sports medicine and physical fitness
Journal publication date14 Nov 2015
Volume57
Issue1-2
DOIs
StatePublished - 14 Nov 2015
Externally publishedYes

Abstract

BACKGROUND: The aim of this study was to investigate the relationship between oxygen uptake (V̇O2) and power output at intensities below and above the lactate threshold (LT) in cyclists; and to determine the reliability of supramaximal power outputs linearly projected from these relationships.

METHODS: Nine male cyclists (mean±standard deviation age: 41±8 years; mass: 77±6 kg, height: 1.79±0.05 m and V̇O2max: 54±7 mL∙kg-1∙min-1) completed two cycling trials each consisting of a step test (10×3 min stages at submaximal incremental intensities) followed by a maximal test to exhaustion. The lines of best fit for V̇O2 and power output were determined for: the entire step test; stages below and above the LT, and from rolling clusters of five consecutive stages. Lines were projected to determine a power output predicted to elicit 110% peak V̇O2.

RESULTS: There were strong linear correlations (r≥0.953; P<0.01) between V̇O2 and power output using the three approaches; with the slope, intercept, and projected values of these lines unaffected (P≥0.05) by intensity. The coefficient of variation of the predicted power output at 110% V̇O2max was 6.7% when using all ten submaximal stages.

CONCLUSIONS: Cyclists exhibit a linear V̇O2 and power output relationship when determined using 3 min stages, which allows for prediction of a supramaximal intensity with acceptable reliability.

ID: 11321769