Activate Now
 
ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Big step towards cure for HIV and other lifelong viral infections

SURVEY RESULTS: Attitudes About Fatigue

How Omega-3 Fights Depression

Superfood Trio: Ginger, Turmeric, and Carrots?

Rejuvenate Your Skin Naturally With Sea Buckthorn Oil

A Smile

Can Drinking More Water Help You Lose Weight?

Resveratrol’s Link to Slowing Alzheimer’s

Tropical Turmeric Carrot Juice & Smoothie

Most Everyone Can Use More Vitamin D

 
Print Page
Email Article

Diminished Cardiopulmonary Capacity During Post-Exertional Malaise - Source: Journal of Chronic Fatigue Syndrome, Vol. 14, #3, 2007

  [ 153 votes ]   [ Discuss This Article ]
By VanNess, JM, et al. • www.ProHealth.com • January 30, 2008


[Note: See abstract, “Legal and Scientific Considerations of the Exercise Stress Test” http://www.immunesupport.com/library/showarticle.cfm?id=8660, which links to the full text article and concludes that patient assessment using the test-retest protocol described here “provides an assessment of CFS-related disability consistent with both medical and legal considerations.”]

Reduced functional capacity and post-exertional malaise following physical activity are hallmark symptoms of Chronic Fatigue Syndrome (CFS). That these symptoms are often delayed may explain the equivocal results for clinical cardiopulmonary exercise testing with CFS patients.

The reproducibility of VO2max in healthy subjects is well documented. This may not be the case with CFS due to delayed recovery symptoms.

Purpose: To compare results from repeated exercise tests as indicators of post-exertional malaise in CFS.

Methods: Peak oxygen consumption (VO2 peak), percentage of predicted peak heart rate (HR%), and VO2 at anaerobic threshold (AT), were compared between six CFS patients and six control subjects for two maximal exercise tests separated by 24 hours.

Results: Multivariate analysis showed no significant differences between control and CFS, respectively, for test 1: VO2 peak (28.4 ± 7.2 ml/ kg/min; 26.2 ± 4.9 ml/kg/min), AT (17.5 ± 4.8 ml/kg/min; 15.0 ± 4.9 ml/ kg/min) or HR% (87.0 ± 25.4%; 94.8 ± 8.8%). However, for test 2 the CFS patients achieved significantly lower values for both VO2peak (28.9 ± 8.0 ml/kg/min; 20.5 ± 1.8 ml/kg/min, p = 0.031) and AT (18.0 ± 5.2 ml/kg/min; 11.0 ± 3.4 ml/kg/min, p = 0.021). HR% was not significantly different (97.6 ± 27.2%; 87.8 ± 9.3%, p = 0.07).

A follow-up classification analysis differentiated between CFS patients and controls with an overall accuracy of 92%.

Conclusion: In the absence of a second exercise test, the lack of any significant differences for the first test would appear to suggest no functional impairment in CFS patients. However, the results from the second test indicate the presence of a CFS related post-exertional malaise.

It might be concluded then that a single exercise test is insufficient to demonstrate functional impairment in CFS patients. A second test may be necessary to document the atypical recovery response and protracted malaise unique to CFS.

Source: Journal of Chronic Fatigue Syndrome, Vol. 14, #3, 2007; pp 77 – 85. DOI: 10.1300/J092v14n02_07 by VanNess JM, Snell CR, Stevens SR.





Post a Comment

Featured Products From the ProHealth Store
Energy NADH™ 12.5mg Ultra ATP+, Double Strength Mitochondria Ignite™ with NT Factor®

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
Natural Pain Relief Supplements

Featured Products

Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium

Natural Remedies

Can Glycine + Amino Acids Be the Secret to Deep, Rejuvenating Sleep? Can Glycine + Amino Acids Be the Secret to Deep, Rejuvenating Sleep?
Astaxanthin - A Little-Known but Power-Packed Nutrient Astaxanthin - A Little-Known but Power-Packed Nutrient
Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue
The Big Blue Fish that Helps Chase the Blues Away The Big Blue Fish that Helps Chase the Blues Away
Ubiquinol - A More Advanced Form of the Energy Producing Nutrient CoQ-10 Ubiquinol - A More Advanced Form of the Energy Producing Nutrient CoQ-10

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE AND SAVE 15% NOW*
Be the first to know about new products, special discounts and the latest health news. *New subscribers only

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2016 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map