8/12/2023 0 Comments Monark cycle ergometerThis limits the assessment of VO 2max in the general population or in large scale settings, and therefore submaximal exercise tests are commonly used. Though, golden standard for VO 2max assessment includes direct measurements of VO 2max performed with expensive laboratory equipment and require a maximal physical effort from the subject. In a scientific statement from the American Heart Association, the inclusion of measurement of VO 2max in clinical practice is urged for to provide the clinicians with vital possibilities to improve patient risk management and health. It has also been linked to several health-related outcomes, with a low capacity being strongly associated with increased risk for cardiovascular disease, the metabolic syndrome, a negative influence on cognitive function, and more recently, severe Covid-19. VO 2max is the highest possible rate of oxygen consumption during a physically intense whole-body activity, and an important factor for many types of physical performance. Further studies are needed to evaluate if the test can be used in clinical populations and in subjects with different medications.Ĭardiorespiratory fitness is an expression of the capacity of the pulmonary and circulatory systems and can be assessed through measurement of maximal oxygen consumption (VO 2max). The EB test detected a change in VO 2max with reasonably good precision over a time span of 5–8 years. With regard to the testing procedure, repeated measures ANOVA revealed that there was no significant difference between the group who exercised at the same work rates at baseline and follow-up (n = 25), and those who required a change in work rate (n = 10). The correlation between baseline and follow-up errors (the difference between estimated-measured VO 2max at each occasion) was r = 0.84 ( p < 0.05). The correlation between individual change in measured and estimated VO 2max was r = 0.75 ( p < 0.05), and the unstandardised B-coefficient from linear regression modelling was 0.88 (95% CI 0.61 to 1.15), i.e., for each litre of change in estimated VO 2max, the measured value had changed 0.88 L. There was no significant change in mean measured VO 2max between baseline and follow-up ( p = 0.91), however large individual variations were noted (− 0.78 to 0.61 L/min). Repeated measures ANOVA were used to test differences between changes over time. Random and systematic errors between the measured and estimated VO 2max were evaluated using Bland-Altman plots. Pearson’s coefficient of correlation ( r) and paired sample t-test were used to analyse the association between change in measured and estimated VO 2max. The baseline tests were conducted between 20, and the follow-up tests were completed 5 to 8 years later. MethodsĪ total of 35 participants (21 men and 14 women), aged 29 to 63 years, performed the Ekblom-Bak (EB) submaximal cycle test for estimation of VO 2max and a maximal treadmill running test for direct measurement of VO 2max. The purpose of the present study was to examine the ability of a submaximal cycling test to detect longitudinal changes in maximal oxygen uptake (VO 2max) and examine the conformity between changes in measured and estimated VO 2max over a time span of 5–8 years.
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