The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.
International Journal of Sports Medicine
Abstract
The aim was to examine the association between this breakpoint (NIRS) and VT2 in welltrained runners.Gas exchange and NIRS data were collected during an incremental VO2max running test for 10 well-trained runners.The breakpoint calculated in oxygen saturation (StO2) and the VT2 were determined and compared in terms relative to %VO2max, absolute speed, VO2 and maximum heart rate (HRmax).There were no significant differences (p>0.05) between the breakpoint in StO2 and VT2 relative to %VO2max (87.00±6.14 and 88.28±3.98 %), absolute speed (15.70±1.42 and 16.10±1.66km•h -1 ), VO2 (53.71±15.17and 54.66±15.57ml•kg -1 •min -1 ) and %HRmax (90.90± 4.17 and 91.84 ± 3.70 %).There were large and significant correlations between instruments relative to %VO2max (r=0.68,p<0.05), absolute speed (r=0.86,p<0.001),VO2 (r=0.86,p<0.001) and %HRmax (r = 0.69; p<0.05).A Bland and Altman analysis of agreement between instruments resulted in a mean difference of -1.27±4.49%,-0.40±0.84km•h -1 , -0.90±3.07ml•kg -1 •min -1 , and -0.94±3.14 for %VO2max, absolute speed, VO2 and %HRmax, respectively.We conclude that a portable NIRS determination of the StO2 breakpoint is comparable with VT2 using gas exchange and therefore appropriate for use in determining exercise training above VT2 intensity.This is the first study to analyze the validity with the running mode using a NIRS portable device.
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Validity and reliability of ventilatory and blood lactate thresholds in well-trained cyclists
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Sack, R. L., Auckley, D., Auger, R. R., Carskadon, M. A., Wright, K. P., Vitiello, M. V., & Zhdanova, I. V. (2007) · Sleep · doi:10.1093/sleep/30.11.1460 · Cited by 650
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Metadata
- Venue
- International Journal of Sports Medicine
- Publisher
- Georg Thieme Verlag KG
- Published
- 2026-09-28
- ISSN
- 0172-4622 (ISSN-L)
- 1439-3964
- OpenAlex
- W4210565317
- Cited by
- 966
- References
- 8
- Type
- paratext
- Language
- en
- Open access
- closed
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