Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 63: 1519-1525, 1987;
8750-7587/87 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Posner, J. D.
Right arrow Articles by Cline, C. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Posner, J. D.
Right arrow Articles by Cline, C. J.

Journal of Applied Physiology, Vol 63, Issue 4 1519-1525, Copyright © 1987 by American Physiological Society

ARTICLES

Ventilatory threshold: measurement and variation with age

J. D. Posner, K. M. Gorman, H. S. Klein and C. J. Cline
Philadelphia Geriatric Center, Medical College of Pennsylvania, Philadelphia 19141.

The purpose of this study is to present measurement of ventilatory threshold (VeT) and maximal oxygen uptake (VO2max) in a large group of predominantly older subjects using a bicycle ergometer and an automated measuring system. One hundred and twenty-seven healthy elderly subjects (mean age: 68) and 44 young and middle-aged subjects (mean age: 39) underwent a maximal exercise test with breath-by-breath measurement of ventilation and gas exchange variables. Ventilatory threshold was determined by visual inspection of the breakpoints in the VE/VO2 and PETO2 data curves. Additional measures were made in a subset of subjects to determine the reproducibility and interobserver variability of VeT and the relationship between VeT and the venous lactate threshold (LaT). Day-to-day reproducibility of VeT was good with a mean difference in VO2 at VeT on two occasions of 40.23 +/- 125 ml/min. Interobserver variability was low (intraclass correlation coefficient of r = 0.941) and VeT was found to correlate to LaT (r = 0.79, P less than 0.05) with LaT occurring a mean 2.3 min after VeT. VeT declined significantly with age in both males and females but less rapidly than VO2max. Both VO2max and VeT were found to vary with age, sex, height, and weight in a stepwise multiple-linear regression analysis. Age-associated changes in skeletal muscle composition may be in part responsible for the less precipitous decline in VeT with age compared with VO2max.


This article has been cited by other articles:


Home page
 Endocr. Rev.Home page
L. J. Woodhouse, A. Mukherjee, S. M. Shalet, and S. Ezzat
The Influence of Growth Hormone Status on Physical Impairments, Functional Limitations, and Health-Related Quality of Life in Adults
Endocr. Rev., May 1, 2006; 27(3): 287 - 317.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
L. Stathokostas, S. Jacob-Johnson, R. J. Petrella, and D. H. Paterson
Longitudinal changes in aerobic power in older men and women
J Appl Physiol, August 1, 2004; 97(2): 781 - 789.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
C. O. Mattern, M. J. Gutilla, D. L. Bright, T. E. Kirby, K. W. Hinchcliff, and S. T. Devor
Maximal lactate steady state declines during the aging process
J Appl Physiol, December 1, 2003; 95(6): 2576 - 2582.
[Abstract] [Full Text]

Home page
 J. Clin. Endocrinol. Metab.Home page
Measures of Submaximal Aerobic Performance Evaluate and Predict Functional Response to Growth Hormone (GH) Treatment in GH-Deficient Adults
J. Clin. Endocrinol. Metab., December 1, 1999; 84(12): 4570 - 4577.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online