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Cycling Attributes that Enhance Running Performance after the Cycle Section in Triathlon.
MedLine Citation:
PMID:  23347994     Owner:  NLM     Status:  Publisher    
PURPOSE: To determine how cycling with a variable (triathlon-specific) power distribution affects subsequent running performance, and quantify relationships between an individual cycling power profile and running ability after cycling. METHODS: Twelve well-trained male triathletes (VO2peak 4.9 ± 0.5 L·min-1; mass 73.5 ± 7.7 kg, mean ± SD) undertook a cycle VO2peak and maximal aerobic power test, and a power profile involving six maximal efforts (6 s - 10 min). Each subject then performed two experimental 1 h cycle-run trials at either triathlon-specific variable (VAR) power ranging from 40-140% MAP or constant (CON) power (both at 65% MAP) followed by an outdoors 9.3 km time trial run. Subjects also completed a control 9.3 km run with no preceding exercise. RESULTS: The 9.3 km run time was 42; ±37 s slower (mean; ±90% confidence limits, CL) after VAR (35:32 ± 3:18 min:s, mean ± SD) compared with CON power cycling (34:50 ± 2:49 min:s). This decrement (35; ±20 s, mean; ± 90% CL) was primarily evident in the first half of the run. Higher blood lactate and rating of perceived exertion after 1 h VAR cycling were moderately correlated (r=0.51-0.55; ~±0.40) with a larger decrement in run performance. There were no clear associations between the power profile test and decrement in run time after VAR compared with CON. CONCLUSIONS: A highly variable power distribution in cycling is likely to impair 10 km triathlon run performance. Training to lower physiological and perceptual responses during cycling should limit the negative effects on triathlon running.
Naroa Etxebarria; Judith M Anson; David B Pyne; Richard A Ferguson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-23
Journal Detail:
Title:  International journal of sports physiology and performance     Volume:  -     ISSN:  1555-0265     ISO Abbreviation:  Int J Sports Physiol Perform     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101276430     Medline TA:  Int J Sports Physiol Perform     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK and the National Institute of Sports Studies (NISS), Faculty of Health, University of Canberra, ACT 2601, Australia.
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