@misc{10481/74521,
year = {2022},
month = {3},
url = {http://hdl.handle.net/10481/74521},
abstract = {Background and Objectives: The prevalence of chronic diseases increases with age, and in
octogenarian elderly, a cardiorespiratory test with gas analysis is more effective in determining the
risk of mortality than applying the conventional risk factors. Materials and Methods: 25 untrained
non-frail octogenarian subjects (four men) performed a submaximal test with gas analysis, which
was stopped after the second ventilatory threshold (VT2) was reached. The variables analyzed were
oxygen consumption at the first threshold (VO2 VT1); ventilatory class (VE/VCO2); oxygen uptake
efficiency slope (OUES); cardiorespiratory optimal point (COP); oxygen pulse difference between
VT2 and VT1 (diff. VO2/HR VT2-VT1). Results: the variables were classified categorically based
on cut-off points present in the literature, where the variable with the highest percentage of altered
cases was dif. VO2/HR VT2-VT1 at 48%; followed by VO2 VT1 at 40%, OUES at 36%, COP at
32%, and VE/VCO2 at 24%. Chi-square analysis between the measured parameters defined that
normal and altered variables were related to each other, except for the variable VE/VCO2 and OUES.
Conclusions: it was found that the main altered variable was the oxygen pulse and the least altered
variable was VCO2/VCO2; there was only a statistically significant difference in a pair of OUES vs.
VE/VCO2 variables.},
organization = {Vicerrectoria for Research, Development and Innovation of the University of Santiago de Chile. Dicyt, categoria Dicyt Asociativo	022087CB_DAS},
publisher = {MDPI},
keywords = {Ergometry},
keywords = {Cardiorespiratory risk},
keywords = {Older adults},
title = {Sub Maximal Ergospirometry Parameters in Untrained Non-Frail Octogenarian Subjects},
doi = {10.3390/medicina58030378},
author = {Cofré Bolados, Cristian and Valdivia Moral, Pedro Angel},
}