Document Detail


The effectiveness of compression garments and lower limb exercise on post-exercise blood pressure regulation in orthostatically intolerant athletes.
MedLine Citation:
PMID:  20818194     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Orthostatic intolerance (OI) may occur postexercise in normotensive individuals due to gravitational stress and removal of muscle pump.
DESIGN: Six subjects performed 3 maximal bouts of exercise associated with (1) no intervention (CONTROL) (initial trial), (2) with use of lower limb compression garment (TROU), and (3) lower limb exercise (HEEL).
SETTING: In each trial, 10 minutes of supine rest was followed by 10 minutes of standing before and immediately after maximal exercise.
PARTICIPANTS: All subjects were OI during the CONTROL trial.
INTERVENTIONS: In the TROU trial, the compression garment was worn during the supine and standing phases. In the HEEL trial, heel raises were performed every 60 seconds during standing periods.
MAIN OUTCOME MEASURES: Systolic blood pressure and heart rate were continuously recorded, and stroke, cardiac output, and total peripheral resistance were estimated (PortAPres, TNO Biomedical Instrumentation, Amsterdam, the Netherlands). Positional changes were compared preexercise and postexercise in CONTROL, TROU, and HEEL via 2-way analysis of variance.
RESULTS: All 6 subjects experienced OI in the CONTROL trial, but this was reduced to 2 after the HEEL and 1 after the TROU. Minor increases in systolic blood pressure (CONTROL, 3 +/- 11; TROU, 12 +/- 18; HEEL, 7 +/- 15 mm Hg) and heart rate (CONTROL, 10 +/- 12; TROU, 16 +/- 8; HEEL, 15 +/- 13 beats.min) were observed, but total peripheral resistance did not alter significantly during orthostasis postexercise (CONTROL, 0.462 +/- 0.351; TROU, 0.325 +/- 0.212; HEEL, 0.746 +/- 0.412 medical units).
CONCLUSIONS: It seems that simple methods/practices adopted by athletes can have a positive impact on OI.
Authors:
Sheena E Privett; Keith P George; Gregory P Whyte; Nigel T Cable
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine     Volume:  20     ISSN:  1536-3724     ISO Abbreviation:  Clin J Sport Med     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-06     Completed Date:  2011-01-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9103300     Medline TA:  Clin J Sport Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  362-7     Citation Subset:  IM    
Affiliation:
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
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MeSH Terms
Descriptor/Qualifier:
Adult
Analysis of Variance
Athletic Injuries / rehabilitation*
Blood Pressure / physiology*
Cardiac Output
Diastole
Exercise / physiology*
Exercise Tolerance
Female
Heart Rate
Humans
Lower Extremity / blood supply*,  physiology
Male
Orthostatic Intolerance / therapy*
Stockings, Compression*
Systole
Time Factors
Vascular Resistance / physiology

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


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