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The reliability and validity of a four-minute running time-trial in assessing VO2max and performance
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Swedish Winter Sports Research Centre)ORCID iD: 0000-0002-1273-6061
2017 (English)In: Frontiers in Physiology, ISSN 1664-042X, E-ISSN 1664-042X, Vol. 8, no MAY, p. 1-9, article id 270Article in journal (Refereed) Published
Abstract [en]

Introduction: Traditional graded-exercise tests to volitional exhaustion (GXTs) are limited by the need to establish starting workloads, stage durations, and step increments. Short-duration time-trials (TTs) may be easier to implement and more ecologically valid in terms of real-world athletic events. The purpose of the current study was to assess the reliability and validity of maximal oxygen uptake (VO2max) and performance measured during a traditional GXT (STEP) and a four-minute running time-trial (RunTT). Methods: Ten recreational runners (age: 32 ± 7 years; body mass: 69 ± 10 kg) completed five STEP tests with a verification phase (VER) and five self-paced RunTTs on a treadmill. The order of the STEP/VER and RunTT trials was alternated and counter-balanced. Performance was measured as time to exhaustion (TTE) for STEP and VER and distance covered for RunTT. Results: The coefficient of variation (CV) for VO2max was similar between STEP, VER, and RunTT (1.9 ± 1.0, 2.2 ± 1.1, and 1.8 ± 0.8%, respectively), but varied for performance between the three types of test (4.5 ± 1.9, 9.7 ± 3.5, and 1.8 ± 0.7% for STEP, VER, and RunTT, respectively). Bland-Altman limits of agreement (bias ± 95%) showed VO2max to be 1.6 ± 3.6 mL·kg-1·min-1 higher for STEP vs. RunTT. Peak HR was also significantly higher during STEP compared with RunTT (P = 0.019). Conclusion: A four-minute running time-trial appears to provide more reliable performance data in comparison to an incremental test to exhaustion, but may underestimate VO2max.

Place, publisher, year, edition, pages
2017. Vol. 8, no MAY, p. 1-9, article id 270
Keywords [en]
graded-exercise test, maximal oxygen uptake, reproducibility, testing, verification phase
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-30893DOI: 10.3389/fphys.2017.00270ISI: 000403151700001PubMedID: 28515696Scopus ID: 2-s2.0-85019708441OAI: oai:DiVA.org:miun-30893DiVA, id: diva2:1111170
Available from: 2017-06-17 Created: 2017-06-17 Last updated: 2017-11-29Bibliographically approved

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Publisher's full textPubMedScopushttp://journal.frontiersin.org/article/10.3389/fphys.2017.00270/full

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