Artery Research

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Volume 7, Issue 3-4, September 2013, Pages 146 - 146

P5.08 ACUTE CHANGES IN CAROTID DIAMETER AND THICKNESS AFTER AND IRONMAN COMPETITION

Authors
R.M. Bruno1, 2, E. Bianchini1, A. Vezzoli3, S. Mrakic Sposta3, A.I. Corciu2, M. Comassi2, R. Sicari1, E. Picano1, L. Pratali1
1Institute of Clinical Physiology – CNR, Pisa, Italy
2University of Pisa, Pisa, Italy
3Institute of Bioimaging and Molecular Physiology - CNR, Milano, Italy
Available Online 11 November 2013.
DOI
10.1016/j.artres.2013.10.157How to use a DOI?
Abstract

Objective: The aim of this study was to evaluate the acute effects of participation in Ironman triathlon competition on carotid properties, in relation to hemodynamic load.

Methods: 28 male triathletes (41±8 years), participating at the Ironman competition (swimming 3.8 km, cycling 180 km, running 42,2 km; 13 athletes performed half-race), underwent carotid and cardiac ultrasound examinations at rest and within 20’ from the arrival. Right carotid diameter (D), distension (ΔD) and Intima-Media-Thickness (IMT) were estimated by an automatic system applied to ultrasound B-mode image sequences, and carotid pulse pressure (PP) by tonometry.

Results: The mean duration of the competition was 12:48±1:14 h (6:14 ± 0:37 hrs for the half-race). At the end of the competition the athletes showed increased heart rate (60.2±13.1 to 82.8±15.6 bpm, p<0.0001), unchanged mean BP (93±14 to 91±10 mmHg, p=ns), carotid PP (from 42 to 42 mmHg, p=ns), and stroke volume (64±14 to 59±16 ml, p=ns) and total body water (48.0±4.0 to 46.5±3.9 kg, p=ns). Cardiac output was significantly increased (5.5±1.2 to 6.7±2.4 l/min, p<0.05), and total peripheral resistances were reduced (17.6±3.9 to 14.8±4.6, p=0.01). D was increased (7.19±0.65 to 7.61 ± 0.76mm, p<0.05), while IMT was significantly reduced at the end of the competition (537±70 to 495±70 μm, p<0.05). ΔD and CC were not modified (588±139 to 568±168 μm and 1.12±0.58 to 1.22±0.54 mm^2/KPa, p=ns).

Conclusions: In an Ironman competition, strenuous exercise induced a marked carotid dilation and a decrease in IMT.

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This is an open access article distributed under the CC BY-NC license.

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Journal
Artery Research
Volume-Issue
7 - 3-4
Pages
146 - 146
Publication Date
2013/11/11
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
10.1016/j.artres.2013.10.157How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

risenwbib
TY  - JOUR
AU  - R.M. Bruno
AU  - E. Bianchini
AU  - A. Vezzoli
AU  - S. Mrakic Sposta
AU  - A.I. Corciu
AU  - M. Comassi
AU  - R. Sicari
AU  - E. Picano
AU  - L. Pratali
PY  - 2013
DA  - 2013/11/11
TI  - P5.08 ACUTE CHANGES IN CAROTID DIAMETER AND THICKNESS AFTER AND IRONMAN COMPETITION
JO  - Artery Research
SP  - 146
EP  - 146
VL  - 7
IS  - 3-4
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2013.10.157
DO  - 10.1016/j.artres.2013.10.157
ID  - Bruno2013
ER  -