Cycling power outputs predict functional threshold power and maximum oxygen uptake

Article


Denham, Joshua, Scott-Hamilton, John, Hagstrom, Amanda D. and Gray, Adrian J.. 2021. "Cycling power outputs predict functional threshold power and maximum oxygen uptake." Journal of Strength and Conditioning Research. 34 (12), pp. 3489-3497. https://doi.org/10.1519/jsc.0000000000002253
Article Title

Cycling power outputs predict functional threshold power and maximum oxygen uptake

ERA Journal ID9783
Article CategoryArticle
AuthorsDenham, Joshua (Author), Scott-Hamilton, John (Author), Hagstrom, Amanda D. (Author) and Gray, Adrian J. (Author)
Journal TitleJournal of Strength and Conditioning Research
Journal Citation34 (12), pp. 3489-3497
Number of Pages9
Year2021
PublisherLippincott Williams & Wilkins
Place of PublicationPhiladelphia, United States
ISSN1064-8011
1533-4287
Digital Object Identifier (DOI)https://doi.org/10.1519/jsc.0000000000002253
Web Address (URL)http://europepmc.org/abstract/med/28930880
Abstract

Functional threshold power (FTP) has emerged as a correlate of lactate threshold and is commonly assessed by recreational and professional cyclists for tailored exercise programing. To identify whether results from traditional aerobic and anaerobic cycling tests could predict FTP and V̇o2max, we analyzed the association between estimated FTP, maximum oxygen uptake (V̇o2max [ml·kg−1·min−1]) and power outputs obtained from a maximal cycle ergometry cardiopulmonary exercise test (CPET), and a 30-second Wingate test in a heterogeneous cohort of cycle-trained and untrained individuals (N = 40, mean ± SD; age: 32.6 ± 10.6 years; relative V̇o2max: 46.8 ± 9.1 ml·kg−1·min−1). The accuracy and sensitivity of the prediction equations were also assessed in young men (N = 11) before and after a 6-week sprint interval training intervention. Moderate-to-strong positive correlations were observed between FTP, relative V̇o2max, and power outputs achieved during incremental and 30-second Wingate cycling tests (r = 0.39–0.965, all p ≤ .05). Whilst maximum power achieved during incremental cycle testing (Pmax) and relative V̇o2max were predictors of FTP (r2 = 0.93), age and FTP (W·kg−1) estimated relative V̇o2max (r2 = 0.80). Our findings confirm that FTP predominantly relies on aerobic metabolism and indicate that both prediction models are sensitive enough to detect meaningful exercise-induced changes in FTP and V̇o2max. Thus, coaches should consider limiting the time and load demands placed on athletes by conducting a maximal cycle ergometry CPET to estimate FTP. In addition, a 20-minute FTP test is a convenient method to assess V̇o2max and is particularly relevant for exercise professionals without access to expensive CPET equipment.

Keywordscardiorespiratory fitness, anaerobic power,endurance training, FTP, sprint interval training, high-intensity interval training
ANZSRC Field of Research 2020420702. Exercise physiology
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Byline AffiliationsUniversity of New England
Institution of OriginUniversity of Southern Queensland
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