Document Detail


Even between-lap pacing despite high within-lap variation during mountain biking.
MedLine Citation:
PMID:  22356809     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: Given the paucity of research on pacing strategies during competitive events, this study examined changes in dynamic high-resolution performance parameters to analyze pacing profiles during a multiple-lap mountain-bike race over variable terrain.
METHODS: A global-positioning-system (GPS) unit (Garmin, Edge 305, USA) recorded velocity (m/s), distance (m), elevation (m), and heart rate at 1 Hz from 6 mountain-bike riders (mean±SD age=27.2±5.0 y, stature=176.8±8.1 cm, mass=76.3±11.7 kg, VO2max=55.1±6.0 mL·kg(-1)·min1) competing in a multilap race. Lap-by-lap (interlap) pacing was analyzed using a 1-way ANOVA for mean time and mean velocity. Velocity data were averaged every 100 m and plotted against race distance and elevation to observe the presence of intralap variation.
RESULTS: There was no significant difference in lap times (P=.99) or lap velocity (P=.65) across the 5 laps. Within each lap, a high degree of oscillation in velocity was observed, which broadly reflected changes in terrain, but high-resolution data demonstrated additional nonmonotonic variation not related to terrain.
CONCLUSION: Participants adopted an even pace strategy across the 5 laps despite rapid adjustments in velocity during each lap. While topographical and technical variations of the course accounted for some of the variability in velocity, the additional rapid adjustments in velocity may be associated with dynamic regulation of self-paced exercise.
Authors:
Louise Martin; Anneliese Lambeth-Mansell; Liane Beretta-Azevedo; Lucy A Holmes; Rachel Wright; Alan St Clair Gibson
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Publication Detail:
Type:  Journal Article     Date:  2012-02-16
Journal Detail:
Title:  International journal of sports physiology and performance     Volume:  7     ISSN:  1555-0265     ISO Abbreviation:  Int J Sports Physiol Perform     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-08-29     Completed Date:  2012-10-23     Revised Date:  2013-07-29    
Medline Journal Info:
Nlm Unique ID:  101276430     Medline TA:  Int J Sports Physiol Perform     Country:  United States    
Other Details:
Languages:  eng     Pagination:  261-70     Citation Subset:  IM    
Affiliation:
Institute of Sport and Exercise Science, University of Worcester, Worcester, UK.
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MeSH Terms
Descriptor/Qualifier:
Adult
Analysis of Variance
Bicycling*
Competitive Behavior
Female
Geographic Information Systems
Heart Rate
Humans
Male
Muscle Contraction*
Muscle, Skeletal / physiology*
Oxygen Consumption
Physical Endurance*
Task Performance and Analysis
Time Factors
Young Adult
Comments/Corrections
Comment In:
Int J Sports Physiol Perform. 2013 Jul;8(4):351

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


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