Document Detail

The importance of daily physical activity for improved exercise tolerance in heart failure patients with limited access to centre-based cardiac rehabilitation.
MedLine Citation:
PMID:  23620699     Owner:  NLM     Status:  PubMed-not-MEDLINE    
BACKGROUND: Supervised cardiac rehabilitation provided at dedicated centres ameliorates exercise intolerance in patients with chronic heart failure.
OBJECTIVE: To correlate the amount of physical activity outside the hospital with improved exercise tolerance in patients with limited access to centre-based programs.
METHODS: Forty patients (median age 69 years) with stable heart failure due to systolic left ventricular dysfunction participated in cardiac rehabilitation once per week for five months. Using a validated single-axial accelerometer, the number of steps and physical activity-related energy expenditures on nonrehabilitation days were determined.
RESULTS: Median (interquartile range) peak oxygen consumption was increased from 14.4 mL/kg/min (range 12.9 mL/kg/min to 17.8 mL/kg/min) to 16.4 mL/kg/min (range 13.9 mL/kg/min to 19.1 mL/kg/min); P<0.0001, in association with a decreased slope of the minute ventilation to carbon dioxide production plot (34.2 [range 31.3 to 38.1] versus 32.7 [range 30.3 to 36.5]; P<0.0001). Changes in peak oxygen consumption were correlated with the daily number of steps (P<0.01) and physical activity-related energy expenditures (P<0.05). Furthermore, these changes were significantly correlated with total exercise time per day and time spent for light (≤3 metabolic equivalents) exercise, but not with time spent for moderate/vigorous (>3 metabolic equivalents) exercise.
CONCLUSIONS: The number of steps and energy expenditures outside the hospital were correlated with improved exercise capacity. An accelerometer may be useful for guiding home-based cardiac rehabilitation.
Noriaki Sato; Hideki Origuchi; Umpei Yamamoto; Yasuhiro Takanaga; Masahiro Mohri
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Experimental and clinical cardiology     Volume:  17     ISSN:  1205-6626     ISO Abbreviation:  Exp Clin Cardiol     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2013-04-26     Completed Date:  2013-04-29     Revised Date:  2013-04-29    
Medline Journal Info:
Nlm Unique ID:  9715903     Medline TA:  Exp Clin Cardiol     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  121-4     Citation Subset:  -    
Department of Rehabilitation;
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