Prediction of Maximal Oxygen Uptake and Power during Cycle Ergometry in Subjects Older than 55 Years of Age

Abstract

One hundred twenty-eight healthy volunteers (81 women, 47 men) older than 55 yr of age were studied with an incremental progressive cycle ergometer test to a symptom-limited, maximal tolerable work load. Mean (+/- SD) age was 66 +/- 6 yr in women and 66 +/- 5 years in men. Subjects with a history of ischemic heart disease, diabetes, pulmonary disease, or neuromuscular disease were excluded. Smokers were included, but all subjects had normal FEV1 and FVC. The objective of the study was to compare measured values of VO2max and Wmax in this older population with previously published predicted values based on subjects of all ages. We found that Wmax observed exceeded Wmax predicted by 9.5 +/- 22% (mean +/- SD) and that VO2max observed exceeded VO2max predicted by 17.5 +/- 22%. Because of this systematic underestimate of VO2max and Wmax by the previous prediction equations, we constructed new prediction equations for use in subjects older than 55 yr of age using height, weight, age, and sex as variables. We conclude that these new prediction equations more accurately predict Wmax and VO2max in subjects older than 55 yr of age because they are based solely on subjects in this age group.

Sex differences in the perceived intensity of breathlessness during exercise with advancing age

“…Relationships between VT and ventilation (V E) were examined, and a point of inflection was determined for each subject (22). We compared our measurements of peak V O2 with predicted normal values accounting for sex, age, height, and weight; a correction factor of 1.09 was applied to estimate the difference between predicted values obtained with cycle vs. treadmill ergometry since treadmill testing results in higher values for peak V O2 (6). Other exercise parameters were compared with the predicted normal values of Jones (27).…”

“…V O2, oxygen uptake; V E, minute ventilation; MVC, maximal ventilatory capacity; RER, respiratory exchange ratio, V CO2, carbon dioxide output; VT, tidal volume; VC, vital capacity; ⌬IC, change in IC; F, breathing frequency; IRV, inspiratory reserve volume; TLC, total lung capacity; RER, respiratory exchange ratio; SpO2, oxygen saturation; PETCO 2 , partial pressure of end-tidal CO2; EELV, end-expiratory lung volume. *Predicted peak V O2 of Blackie et al (6) with 9% correction for treadmill from cycle values. †P Ͻ 0.05, significantly different within group.…”

Clinical exercise testing with reference to lung diseases: indications, standardization and interpretation strategies. ERS Task Force on Standardization of Clinical Exercise Testing. European Respiratory Society

“…An initial analysis of available data on healthy subjects [1,2,12,118,[181][182][183][184][185][186][187][188][189][190][191] clearly indicated that only five of these studies [2,181,[184][185][186] fulfill minimum requirements to be considered as candidates to be used in the clinical setting [85]. However, Blackie et ah [184] cover a lim ited age span (55-80 yrs), and Bruce et al [186] pro vide data obtained with treadmill in a population of physically fit people. Hence, the analysis of potential studies in healthy sedentary people providing predic tion equations for peak V'02 obtained with incremental cycling exercise testing is reduced to three sets [12,181,185], Basic characteristics of these three studies are summ arized in table 7.…”

Spiroergometrische Referenzwerte für die sozialmedizinische Leistungsbeurteilung bei Erwachsenen im Alter über 60 Jahre

“…Zusätzlich konnte der Sauerstoffpuls aus den Daten der maximalen Sauerstoffaufnahme, dividiert durch die maximale Herzfrequenz, annähend errechnet werden [4,9,10,16,20]. Bei Frauen zeigt sich eine gute Übereinstimmung mit sämtlichen Studien [4, 5, 7 -10, 13], siehe• " Abb.…”

“…Bei den Männern liegt der von Pothoff et al [5] und Herdy et al [13] für inaktive Männer bestimmte Sauerstoffpuls unterhalb der eigenen sowie der in den übrigen Studien [4,7,10,16] gefundenen Werte, vgl.…”