Document Detail


Heart-rate recommendations: transfer between running and cycling exercise?
MedLine Citation:
PMID:  12740734     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
With the expanding use of portable heart rate (HR) monitors in endurance sports, HR is increasingly used as a marker for exercise intensity. Hereby, HR at the so-called individual anaerobic threshold (IAT) is one possible reference point. However, once determined, it is often attempted to apply HR recommendations from one type of ergometry to different kinds of exercises. We examined whether HR at IAT and at 4 mmol x l -1 blood lactate is predictable from cycling to running and vice versa. Data of 371 subjects (304 male, 67 female) were analyzed. All subjects underwent an incremental test on a treadmill (TR, starting speed 6 or 8 km x h -1, increments 2 km x h -1 every 3 min) and on a bicycle ergometer (BE, start at 50 Watt, increments 25 or 50 Watt every 3 min). IAT was determined at a net increase of lactate concentration of 1 - 5 mmol x l -1 above lactate concentration at lactate threshold for running (as in: Med Sci Sports Exerc 1998, 30 (10); 1552 - 1557) and 1.0 mmol x l -1 for cycling. A maximum time span of three weeks was allowed between the tests. We found that heart rate at IAT or at 4 mmol x l -1 blood lactate did not correlate between cycling and running. A sports specific test seems to be a prerequisite for reliable heart rate recommendations.
Authors:
K Roecker; H Striegel; H-H Dickhuth
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  International journal of sports medicine     Volume:  24     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-05-12     Completed Date:  2003-09-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  173-8     Citation Subset:  IM    
Affiliation:
Department of Rehabilitative and Preventive Sports Medicine, Medical Clinic and Polyclinic, University of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany. kai.roecker@msm1.ukl.uni-freiburg.de
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MeSH Terms
Descriptor/Qualifier:
Adult
Anaerobic Threshold / physiology
Bicycling / physiology*
Ergometry / methods
Exercise / physiology*
Female
Heart Rate / physiology*
Humans
Lactic Acid / blood
Male
Running / physiology*
Sex Factors
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

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


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