Detecting mechanical breakpoints during treadmill-based graded exercise test: Relationships to ventilatory thresholds.
Running mechanics
breakpoint
graded exercise test
instrumented treadmill
Journal
European journal of sport science
ISSN: 1536-7290
Titre abrégé: Eur J Sport Sci
Pays: England
ID NLM: 101146739
Informations de publication
Date de publication:
Jul 2022
Jul 2022
Historique:
pubmed:
3
8
2021
medline:
24
6
2022
entrez:
2
8
2021
Statut:
ppublish
Résumé
While changes in cardio-respiratory variables during graded exercise tests (GXTs) are well described, less is known about running mechanical alterations. We determined mechanical breakpoints during GXT and compared their temporal location with thresholds in ventilation. Thirty-one recreational male runners completed continuous GXT on an instrumented treadmill, starting at 2.5 m.s Fifteen out of 16 mechanical variables (all except leg stiffness) displayed breakpoints occurring between 61.9% and 82.3% of GXT duration; these occurred significantly later than VT1 (46.9 ± 6.4% of GXT duration, During treadmill GXT, breakpoints can be detected for the vast majority of mechanical variables (except leg stiffness), yet these are not related with ventilatory thresholds.
Sections du résumé
BACKGROUND
BACKGROUND
While changes in cardio-respiratory variables during graded exercise tests (GXTs) are well described, less is known about running mechanical alterations.
PURPOSE
OBJECTIVE
We determined mechanical breakpoints during GXT and compared their temporal location with thresholds in ventilation.
METHODS
METHODS
Thirty-one recreational male runners completed continuous GXT on an instrumented treadmill, starting at 2.5 m.s
RESULTS
RESULTS
Fifteen out of 16 mechanical variables (all except leg stiffness) displayed breakpoints occurring between 61.9% and 82.3% of GXT duration; these occurred significantly later than VT1 (46.9 ± 6.4% of GXT duration,
CONCLUSION
CONCLUSIONS
During treadmill GXT, breakpoints can be detected for the vast majority of mechanical variables (except leg stiffness), yet these are not related with ventilatory thresholds.
Identifiants
pubmed: 34334115
doi: 10.1080/17461391.2021.1963844
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM