Maximal Oxygen Uptake Is Underestimated during Incremental Testing in Hypertensive Older Adults: Findings from the HAEL Study.
Journal
Medicine and science in sports and exercise
ISSN: 1530-0315
Titre abrégé: Med Sci Sports Exerc
Pays: United States
ID NLM: 8005433
Informations de publication
Date de publication:
01 07 2021
01 07 2021
Historique:
pubmed:
16
1
2021
medline:
9
9
2021
entrez:
15
1
2021
Statut:
ppublish
Résumé
The present cross-sectional study aimed to investigate whether a maximal oxygen uptake (V˙O2max) verification phase (VER) could improve the accuracy of a previous graded exercise test (GXT) to assess individual V˙O2max in hypertensive individuals. Thirty-three older adults with hypertension (24 women) taking part in the Hypertension Approaches in the Elderly Study (NCT03264443) were recruited. Briefly, after performing a treadmill GXT to exhaustion, participants rested for 10 min and underwent a multistage VER to confirm GXT results. Individual V˙O2max, RER, maximal heart rate (HRmax), and RPE were measured during both GXT and VER tests. Mean values were compared between bouts using paired sample t-tests, and V˙O2max was also compared between GXT and VER on an individual basis. Testing was well tolerated by all participants. Both absolute (P = 0.011) and relative (P = 0.014) V˙O2max values were higher in VER than that in GXT. RER (P < 0.001) and RPE (P = 0.002) were lower in VER, whereas HRmax (P = 0.286) was not different between the two trials. Individual V˙O2max comparisons revealed that 54.6% of the participants (18/33) achieved a V˙O2max value that was ≥3% during VER (mean = 13.5%, range = +3% to +22.1%, ES = 0.062), whereas 87.9% (29/33) of the tests would have been validated as a maximal effort if the classic criteria were used (i.e., V̇O2 plateau or at least two secondary criteria). In sedentary older individuals with hypertension, GXT to exhaustion underestimated V˙O2max in more than half of tested participants, even when established, but criticized criteria were used to confirm whether a maximal effort was attained. Using VER after GXT is a quick approach to assist with the verification of an individual's V˙O2max.
Identifiants
pubmed: 33449605
doi: 10.1249/MSS.0000000000002598
pii: 00005768-202107000-00016
doi:
Banques de données
ClinicalTrials.gov
['NCT03264443']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1452-1459Informations de copyright
Copyright © 2021 by the American College of Sports Medicine.
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