The 3-min Test Does not Provide a Valid Measure of Critical Power Using the SRM Isokinetic Mode

B. Karsten*, S. A. Jobson, J. Hopker, L. Passfield, C. Beedie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (SciVal)
196 Downloads (Pure)

Abstract

Recent datas suggest that the mean power over the final 30 s of a 3-min all-out test is equivalent to Critical Power (CP) using the linear ergometer mode. The purpose of the present study was to identify whether this is also true using an "isokinetic mode". 13 cyclists performed: 1) a ramp test; 2) three 3-min all-out trials to establish End Power (EP) and work done above EP (WEP); and 3) 3 constant work rate trials to determine CP and the work done above CP (W ') using the work-time (=CP1/W ' 1) and 1/time (=CP2/W ' 2) models. Coefficient of variation in EP was 4.45% between trials 1 and 2, and 4.29% between trials 2 and 3. Limits of Agreement for trials 1-2 and trials 2-3 were -2 +/- 38 W. Significant differences were observed between EP and CP1 (+37 W, P

Original languageEnglish
Pages (from-to)304-309
Number of pages6
JournalInternational Journal of Sports Medicine
Volume35
Issue number4
DOIs
Publication statusPublished - Apr 2014

Keywords

  • exercise testing
  • critical intensity
  • reliability
  • anaerobic work capacity
  • validity
  • OUT CYCLING TEST
  • HIGH-INTENSITY EXERCISE
  • ACCUMULATED OXYGEN DEFICIT
  • ANAEROBIC WORK CAPACITY
  • DURATION RELATIONSHIP
  • STATISTICAL-METHODS
  • RELIABILITY
  • PERFORMANCE
  • PARAMETERS
  • TIME

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