The incidence of V˙O2 plateau at V˙O2max in a cardiac-diseased population

Nolan, P. B., Maddison, R. and Dalleck, L. 2014, The incidence of V˙O2 plateau at V˙O2max in a cardiac-diseased population, International journal of sports medicine, vol. 35, no. 2, pp. 118-124, doi: 10.1055/s-0033-1345135.

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Title The incidence of V˙O2 plateau at V˙O2max in a cardiac-diseased population
Author(s) Nolan, P. B.
Maddison, R.ORCID iD for Maddison, R.
Dalleck, L.
Journal name International journal of sports medicine
Volume number 35
Issue number 2
Start page 118
End page 124
Total pages 7
Publisher Georg Thieme Verlag
Place of publication Stuttgart, Germany
Publication date 2014-02
ISSN 1439-3964
Keyword(s) Aged
Angina Pectoris
Exercise Test
Heart Rate
Middle Aged
Myocardial Infarction
Oxygen Consumption
Physical Exertion
Pulmonary Gas Exchange
Pulmonary Ventilation
Time Factors
Summary We sought to determine the incidence of V˙O(2) plateau at V˙O(2)max in a cardiovascular-diseased (CVD) population using 4 different sampling intervals (15-breath moving average, 15 s, 30 s, and 60 s) and 3 different V˙O(2) plateau criteria (≤50 mL · min(-1), ≤80 mL · min(-1), and ≤150 mL · min(-1)). A total of 69 people (62 ± 10 yrs.) with recently diagnosed CVD performed a maximal exercise test (10:07 ± 2:24 min) on a treadmill. The test was classified as maximal (n = 57, 2 430 ± 605 mL · min(-1)) if self-terminated due to fatigue or classified as symptom-limited (n = 12, 1 683 ± 438 mL · min(-1)) if symptoms presented. Chi-square analysis revealed a significant (p < 0.05) effect of sampling interval on incidence of V˙O(2) plateau at V˙O(2)max across all 3 V˙O(2) plateau criteria. The sampling interval had an increasingly stronger influence on the incidence of V˙O(2) plateau at V˙O(2)max with smaller criterion thresholds as evidenced by the Cramer's V statistics: [≤50 mL · min(-1) (Cramer's V = 0.548, p < 0.05], ≤80 mL · min(-1) [Cramer's V = 0.489, p < 0.05], ≤150 mL · min(-1) [Cramer's V = 0.214, p < 0.05]. Incidence of V˙O(2) plateau at V˙O(2)max in CVD individuals is significantly influenced by the sampling interval applied. Based on our findings we recommend a15 breath moving average and V˙O(2) plateau criterion of ≤50 mL · min(-1).
Language eng
DOI 10.1055/s-0033-1345135
Field of Research 111799 Public Health and Health Services not elsewhere classified
1106 Human Movement And Sports Science
0913 Mechanical Engineering
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Georg Thieme Verlag KG Stuttgart
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Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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