Enter your Email address:
Wolters Kluwer Health may email you for journal alerts and information, but is committed
to maintaining your privacy and will not share your personal information without
You currently have no recent searches
Thompson, S M.1; Coyle, M A.1; Stager, J M. FACSM1; Brown, J B.1
1University of Indianapolis, Indianapolis, IN Indiana University, Bloomington, IN Vivometrics Inc. Ventrua, CA
The determination of ventilatory threshold (Tvent) has proven useful in the assessment of training effectiveness. However, as yet, determination of Tvent has been restricted to the laboratory. Thus, we compared a novel ambulatory monitoring system that uses inductive plythesmography (LifeShirtTM, VivoMetrics, Inc., Ventura, CA) to Tvent determined by a standard mass flow device (Hector Engineering, Bloomington, IN).
Five subjects wore the LifeShirtTM (LS) during a graded exercise test to Vo2 max. During the test, metabolic activity was measured by open flow indirect calorimetry. Ventilation was monitored simultaneously by the mass flow device (MF) and LS. The exercise intensity (as indicated by Vco2) where Tvent occurred was determined by the V-slope method. Inter-device differences in Tvent values were tested within each subject by paired student's t-test (p < 0.05).
Exercise intensity where Tvent occurred did not differ between LS (Vco2 = 3.18 ± 0.70 L/min) and MF (Vco2 = 3.21 ± 0.66 L/min).
These data suggest the ambulatory technology (as employed by LifeShirtTM) can be used to characterize the ventilatory responses to exercise at different intensities.
©2003The American College of Sports Medicine
Colleague's E-mail is Invalid
Your Name: (optional)
Separate multiple e-mails with a (;).
Thought you might appreciate this item(s) I saw at Medicine & Science in Sports & Exercise.
Send a copy to your email
Your message has been successfully sent to your colleague.
Some error has occurred while processing your request. Please try after some time.
An Existing Folder
A New Folder
The item(s) has been successfully added to "".
Login with your LWW Journals username and password.
Username or Email:
Enter and submit the email address you registered with. An email with instructions to reset your password will be sent to that address.
Link to reset your password has been sent to specified email address.
What does "Remember me" mean?
By checking this box, you'll stay logged in until you logout. You'll get easier access to your articles, collections,
media, and all your other content, even if you close your browser or shut down your
To protect your most sensitive data and activities (like changing your password),
we'll ask you to re-enter your password when you access these services.
What if I'm on a computer that I share with others?
If you're using a public computer or you share this computer with others, we recommend
that you uncheck the "Remember me" box.
Save my selection
Article Level Metrics