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Pacing strategy and change in body composition during a deca iron triathlon


Herbst, L; Knechtle, B; Lopez, C L; Andonie, J L; Fraire, O S; Kohler, G; Rüst, C A; Rosemann, T (2011). Pacing strategy and change in body composition during a deca iron triathlon. Chinese Journal of Physiology, 54(4):255-263.

Abstract

We investigated the timeline of performances in the three races of the ‘World Challenge Deca Iron
Triathlon’, held in 2006, 2007 and 2009, where the athletes completed one Ironman triathlon daily on 10
consecutive days. The association of anthropometric characteristics such as body fat estimated using
bioelectrical impedance analysis and previous experience in ultra-triathlon with race time was investigated
using multiple linear regression analysis. Forty-nine athletes participated in these three races; 23 (47%)
participants completed the race within 8,817 (1,322) min. Day 1 was the fastest with 762 (86) min; the
slowest was Day 10 with 943 (167) min (P < 0.05). The time per Ironman increased during the race
(P < 0.05). Body mass and fat mass decreased whereas lean body mass increased (P < 0.05). Race time
was related to both the number of finished Triple Iron triathlons (P = 0.028) and the personal best time
in a Triple Iron triathlon (P < 0.0001). We concluded that performance in a Deca Iron triathlon decreased throughout the competition, with the fastest race on Day 1 and the slowest on Day 10. The number of finished Triple Iron triathlons and the personal best time in a Triple Iron triathlon, but not anthropometry, were related to race time. To conclude, athletes need to have a high number of previously completed Triple Iron triathlons, as well as a fast personal best time in a Triple Iron triathlon, in order to finish a Deca Iron triathlon successfully.

We investigated the timeline of performances in the three races of the ‘World Challenge Deca Iron
Triathlon’, held in 2006, 2007 and 2009, where the athletes completed one Ironman triathlon daily on 10
consecutive days. The association of anthropometric characteristics such as body fat estimated using
bioelectrical impedance analysis and previous experience in ultra-triathlon with race time was investigated
using multiple linear regression analysis. Forty-nine athletes participated in these three races; 23 (47%)
participants completed the race within 8,817 (1,322) min. Day 1 was the fastest with 762 (86) min; the
slowest was Day 10 with 943 (167) min (P < 0.05). The time per Ironman increased during the race
(P < 0.05). Body mass and fat mass decreased whereas lean body mass increased (P < 0.05). Race time
was related to both the number of finished Triple Iron triathlons (P = 0.028) and the personal best time
in a Triple Iron triathlon (P < 0.0001). We concluded that performance in a Deca Iron triathlon decreased throughout the competition, with the fastest race on Day 1 and the slowest on Day 10. The number of finished Triple Iron triathlons and the personal best time in a Triple Iron triathlon, but not anthropometry, were related to race time. To conclude, athletes need to have a high number of previously completed Triple Iron triathlons, as well as a fast personal best time in a Triple Iron triathlon, in order to finish a Deca Iron triathlon successfully.

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15 citations in Web of Science®
27 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Institute of General Practice
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2011
Deposited On:13 Jan 2012 09:36
Last Modified:05 Apr 2016 15:16
Publisher:Chinese Physiological Society
ISSN:0304-4920
Publisher DOI:10.4077/CJP.2011.AMM115
PubMed ID:22129824
Permanent URL: http://doi.org/10.5167/uzh-53364

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