Document Detail


Short-term Aerobic Exercise Reduces Nitroglycerin-Induced Orthostatic Intolerance in Older Adults with Type 2 Diabetes.
MedLine Citation:
PMID:  21346593     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS/HYPOTHESIS:: Older adults are at high risk for syncope due to orthostatic intolerance (OI), and this risk increases with co-morbid Type 2 diabetes and vasoactive medications. Despite many benefits, previous investigations have shown worsening OI with aerobic training. We examined whether aerobic exercise reduced OI in older adults with Type 2 diabetes that were given a short-acting vasoactive agent (nitroglycerin, GTN). METHODS:: Forty older adults (25 males and 15 females, mean age 71.4±0.7, ranging in age from 65 to 83) with Type 2 diabetes were recruited. Subjects were randomized to each of 2 groups: an aerobic group (AT, 3 months vigorous aerobic exercise), and a nonaerobic (NA, no aerobic exercise) group. Exercise sessions were supervised by a certified exercise trainer 3 times per week. After being given 400 micrograms of sublingual nitroglycerin, each subject was placed in a 70 degree head-up tilt for 30 minutes. RESULTS:: When the two groups were compared using a Cox proportional hazards model, tilt table tolerance (TTT) was significantly better in the AT group as compared to the NA group (χMC=7.271, p=0.007). CONCLUSIONS:: Our findings indicate that a relatively short aerobic exercise intervention can improve post-GTN orthostatic tolerance in older adults with Type 2 diabetes.
Authors:
Kenneth M Madden; Chris Lockhart; Tiffany F Potter; Darcye Cuff; Graydon S Meneilly
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-21
Journal Detail:
Title:  Journal of cardiovascular pharmacology     Volume:  -     ISSN:  1533-4023     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7902492     Medline TA:  J Cardiovasc Pharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
VITALiTY (Vancouver Initiative to Add Life to Years) Research Laboratory, Division of Geriatric Medicine, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
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