Differences in the ventilatory thresholds in treadmill according to training status in 971 males and 301 females: a cross-sectional study.

Autor: Benítez-Muñoz JA; LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Calle de Martín Fierro, 7, 28040, Madrid, Spain. joseantonio.benitez.munoz@upm.es., Benito PJ; LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Calle de Martín Fierro, 7, 28040, Madrid, Spain., Guisado-Cuadrado I; LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Calle de Martín Fierro, 7, 28040, Madrid, Spain., Cupeiro R; LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Calle de Martín Fierro, 7, 28040, Madrid, Spain., Peinado AB; LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science (INEF), Universidad Politécnica de Madrid, Calle de Martín Fierro, 7, 28040, Madrid, Spain.
Jazyk: angličtina
Zdroj: European journal of applied physiology [Eur J Appl Physiol] 2024 Sep 24. Date of Electronic Publication: 2024 Sep 24.
DOI: 10.1007/s00421-024-05622-z
Abstrakt: Purpose: To analyze the influence of training status on the percentage of maximum oxygen consumption, heart rate and velocity (%VO 2max , %HR max and %V max ) at which ventilatory threshold 1 and ventilatory threshold 2 occur (VT1 and VT2, respectively), in males and females separately considering age, during a ramp incremental treadmill test.
Methods: 791 males (36.8 ± 9.9 years) and 301 females (33.9 ± 11.0 years) performed a ramp incremental exercise test until fatigue where VT1 and VT2 were determined. Participants were classified as low, medium or high training status combining the oxygen consumption at VT1, VT2 and VO 2max by clustering analysis.
Results: VO 2max is poorly correlated with the %VO 2max , %HR max and %V max at which VT1 and VT2 occur (r < 0.3), in contrast, there is a positive correlation between oxygen consumption at VT1 and VT2 with the %VO 2max , %HR max and %V max at which VT1 and VT2, respectively, occur in males and females (r = 0.203-0.615). Furthermore, we observed the %VO 2max , %HR max and %V max at which thresholds occur were greater the higher the training status (all p < 0.003).
Conclusion: The physiological determinants of the percentage of maximum at which VT1 and VT2 occur are more related to oxygen consumption at VT1 and VT2, respectively, than to VO 2max . Moreover, due to the higher percentage of maximum at which VT1 and VT2 occur in individuals with a higher training status, the common strategy consisting of establishing exercise intensity as a fixed percentage of maximum might not be effective to match intensity across individuals with different training status.
Clinical Trial Registration: NCT06246760.
(© 2024. The Author(s).)
Databáze: MEDLINE
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