Document Detail


Heart rate and heart rate variability at rest and during exercise in boys who suffered a severe traumatic brain injury and typically-developed controls.
MedLine Citation:
PMID:  20085448     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: To measure heart rate (HR) and heart rate variability (HRV) at rest and during exercise in children with post-severe traumatic brain injury as compared to age-matched typically-developed controls. DESIGN: Comparative study. SETTING: Out-patient rehabilitation department. PARTICIPANTS: Twelve boys post-severe traumatic brain injury (TBI) (aged 7-13 years) and 18 typically-developed (TD) boys matched for age. INTERVENTIONS: HR and HRV were determined at rest and at a steady functional walking rate on the treadmill. MAIN OUTCOME MEASURES: HR and HRV parameters include: time domain parameters: standard deviation of the R-R interval, square root of the mean squared differences of successive R-R differences at rest and during steady-state exercise. RESULTS: Children post-TBI demonstrated higher mean HR values at rest (TBI 91.8 +/- 7.0 beats per minute vs 72.0 +/- 7.1 beats per minute in controls, p < 0.05) and during exercise (TBI 123.4 +/- 15.5 beats per minute vs 113.0 +/- 9.1 beats per minute in controls, p < 0.05). At rest, the time domain measures of HRV were significantly lower in the TBI group (p < 0.05). Time domain mean values decreased significantly during exercise only among the TD children. CONCLUSIONS: The findings of this study suggest that among children post-severe TBI, the cardiac autonomic mechanism is less efficient at rest and less adaptive to exercise and activity as compared to TD children.
Authors:
Michal Katz-Leurer; Hemda Rotem; Ofer Keren; Shirley Meyer
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Brain injury : [BI]     Volume:  24     ISSN:  1362-301X     ISO Abbreviation:  Brain Inj     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-01-20     Completed Date:  2010-08-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8710358     Medline TA:  Brain Inj     Country:  England    
Other Details:
Languages:  eng     Pagination:  110-4     Citation Subset:  IM    
Affiliation:
Sackler Faculty of Medicine, School of Health Professions, Physical Therapy Department, Tel-Aviv University, Tel Aviv, Israel. michalkz@post.tau.ac.il
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Brain Injuries / physiopathology*,  rehabilitation
Child
Electrocardiography
Exercise / physiology
Exercise Test
Heart Rate / physiology*
Humans
Male
Rest / physiology*
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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