Validating an adjustment to the intermittent critical power model for elite cyclists—Modeling W′ balance during World Cup team pursuit performances

Journal article


Bartram, Jason C., Thewlis, Dominic, Martin, David T. and Norton, Kevin I.. (2022). Validating an adjustment to the intermittent critical power model for elite cyclists—Modeling W′ balance during World Cup team pursuit performances. International Journal of Sports Physiology and Performance. 17(2), pp. 170-175. https://doi.org/10.1123/ijspp.2020-0444
AuthorsBartram, Jason C., Thewlis, Dominic, Martin, David T. and Norton, Kevin I.
Abstract

Purpose: Modeling intermittent work capacity is an exciting development to the critical power model with many possible applications across elite sport. With the Skiba 2 model validated using subelite participants, an adjustment to the model’s recovery rate has been proposed for use in elite cyclists (Bartram adjustment). The team pursuit provides an intermittent supramaximal event with which to validate the modeling of W′ in this population. Methods: Team pursuit data of 6 elite cyclists competing for Australia at a Track World Cup were solved for end W′ values using both the Skiba 2 model and the Bartram adjustment. Each model’s success was evaluated by its ability to approximate end W′ values of 0 kJ, as well as a count of races modeled to within a predetermined error threshold of ±1.840 kJ. Results: On average, using the Skiba 2 model found end W′ values different from zero (P = .007; mean ± 95% confidence limit, –2.7 ± 2.0 kJ), with 3 out of 8 cases ending within the predetermined error threshold. Using the Bartram adjustment on average resulted in end W′ values that were not different from zero (P = .626; mean ± 95% confidence limit, 0.5 ± 2.5 kJ), with 4 out of 8 cases falling within the predetermined error threshold. Conclusions: On average, the Bartram adjustment was an improvement to modeling intermittent work capacity in elite cyclists, with the Skiba 2 model underestimating the rate of W′ recovery. In the specific context of modeling team pursuit races, all models were too variable for effective use; hence, individual recovery rates should be explored beyond population-specific rates.

KeywordsSkiba; anaerobic capacity; intermittent work capacity; maximal capacity; cycling
Year2022
JournalInternational Journal of Sports Physiology and Performance
Journal citation17 (2), pp. 170-175
PublisherHuman Kinetics Publishers
ISSN1555-0265
Digital Object Identifier (DOI)https://doi.org/10.1123/ijspp.2020-0444
PubMed ID34560664
Scopus EID2-s2.0-85124578748
Page range170-175
FunderResearch Training Program Scholarship (RTP), Australian Government
National Health and Medical Research Council (NHMRC)
Publisher's version
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All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online24 Sep 2021
Publication process dates
Deposited01 Nov 2023
Grant IDID1126229
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