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Int J Sports Med 2014; 35(14): 1170-1178
DOI: 10.1055/s-0034-1374601
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Intensity Profile during an Ultra-endurance Triathlon in Relation to Testing and Performance

A. Barrero
1   Institut Nacional d’Educació Física de Catalunya (INEFC), Universitat de Barcelona, INEFC-Barcelona Sports Sciences Research Group Barcelona, Barcelona, Spain
,
D. Chaverri
1   Institut Nacional d’Educació Física de Catalunya (INEFC), Universitat de Barcelona, INEFC-Barcelona Sports Sciences Research Group Barcelona, Barcelona, Spain
,
P. Erola
2   Departament d’Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, Tarragona, Spain
,
X. Iglesias
1   Institut Nacional d’Educació Física de Catalunya (INEFC), Universitat de Barcelona, INEFC-Barcelona Sports Sciences Research Group Barcelona, Barcelona, Spain
,
F. A. Rodríguez
1   Institut Nacional d’Educació Física de Catalunya (INEFC), Universitat de Barcelona, INEFC-Barcelona Sports Sciences Research Group Barcelona, Barcelona, Spain
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accepted after revision 27. März 2014

Publikationsdatum:
11. September 2014 (online)

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Abstract

We examined the heart rate (HR)-based intensity profile during an ultra-endurance triathlon (UET) estimated from the individual HR-oxygen uptake (˙VO2) relationship during specific graded tests, relating it to race performance. 9 male ultra-endurance triathletes completed the study. Before racing, subjects performed graded exercise tests involving cycle (C) ergometry, treadmill running (R) and free swimming (S) for peak ˙VO2 and HR at ventilatory thresholds (VT). Exercise-specific HR-˙VO2 regression equations were developed. Mean race HR was higher during S (149.2 (10.1) bpm) than during C (137.1 (5.7) bpm) and R (136.2 (10.5) bpm). During C and R, HR was below both VT (11% and 27–28%). HR differences between S and C correlated with C, R and final times. The greatest differences between S and C were related to the worst times in the next stages. These ultra-endurance triathletes performed S at a higher relative intensity, which was inversely correlated with performance in the following stages. The best predictors of final racing time (81%) were weight-adjusted ˙VO2max and HR difference between C and S. A more adequate characterization of the time pattern during the whole race, especially during S, adds new information concerning the intensity profile and cardiovascular demands of an UET race.

Key words

heart rate - oxygen uptake - ventilatory threshold - swimming - cycling - running
 

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