High Agreement between Laboratory and Field Estimates of Critical Power in Cycling

B. Karsten, S. A. Jobson, J. Hopker, A. Jimenez, C. Beedie

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Abstract

The purpose of this study was to investigate the level of agreement between laboratory-based estimates of critical power (CP) and results taken from a novel field test. Subjects were fourteen trained cyclists (age 40 +/- 7 yrs; body mass 70.2 +/- 6.5 kg; O-2max 3.8 +/- 0.5 L center dot min(-1)). Laboratory-based CP was estimated from 3 constant work-rate tests at 80%, 100% and 105% of maximal aerobic power (MAP). Field-based CP was estimated from 3 all-out tests performed on an outdoor velodrome over fixed durations of 3, 7 and 12 min. Using the linear work limit (W-lim) vs. time limit (T-lim) relation for the estimation of CP1 values and the inverse time (1/t) vs. power (P) models for the estimation of CP2 values, field-based CP1 and CP2 values did not significantly differ from laboratory-based values (234 +/- 24.4 W vs. 234 +/- 25.5 W (CP1); P

Original languageEnglish
Pages (from-to)298-303
Number of pages6
JournalInternational Journal of Sports Medicine
Volume35
Issue number4
DOIs
Publication statusPublished - Apr 2014

Keywords

  • critical intensity
  • exercise testing
  • power-duration relationship
  • HIGH-INTENSITY EXERCISE
  • LACTATE STEADY-STATE
  • DURATION RELATIONSHIP
  • RESPIRATORY PROFILE
  • STATISTICAL-METHODS
  • TIME RELATIONSHIP
  • CRITICAL SPEED
  • WORK CAPACITY
  • PERFORMANCE
  • RELIABILITY

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