Prolonged endurance exercise over several days induces increase in extracellular water (ECW). We aimed to investigate an association between the increase in ECW and the change in aldosterone and vasopressin in a multistage ultraendurance triathlon, the 'World Challenge Deca Iron Triathlon' with 10 Ironman triathlons within 10 days. Before and after each Ironman, body mass, ECW, urinary [Na(+)], urinary [K(+)], urinary specific gravity, urinary osmolality and aldosterone and vasopressin in plasma were measured. The 11 finishers completed the total distance of 38 km swimming, 1800 km cycling and 422 km running within 145.5 (18.8) hours and 25 (22) minutes. ECW increased by 0.9 (1.1) L from 14.6 (1.5) L prerace to 15.5 (1.9) L postrace (P < 0.0001). Aldosterone increased from 70.8 (104.5) pg/mL to 102.6 (104.6) pg/mL (P = 0.033); vasopressin remained unchanged. The increase in ECW was related neither to postrace aldosterone nor to postrace vasopressin. In conclusion, ECW and aldosterone increased after this multistage ultraendurance triathlon, but vasopressin did not. The increase in ECW and the increase in aldosterone were not associated.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1258/smj.2011.011287 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cardiac function and autonomic cardiac function during a multi-stage cycling event: a brief report.
Front Sports Act Living
July 2024
M2S Laboratory, University of Rennes 2, Rennes, France.
Introduction: Prolonged and repeated exercise performed during an ultra-endurance event can induce general and cardiac fatigue known as exercise-induced cardiac fatigue. Our objective was to find a possible correlation between the cardiac function and the autonomic cardiac function.
Methods: During a multistage ultra-endurance event, a female well-trained cyclist underwent daily rest echocardiography and heart rate variability measurements to assess the cardiac function and the cardiac autonomic function.
Pacing Variation in Multistage Ultramarathons: Internet-Based Cross-Sectional Study.
JMIR Form Res
August 2023
Medbase St Gallen Am Vadianplatz, St Gallen, Switzerland.
Background: Ultramarathon running is the most popular ultraendurance competition in terms of the number of races and runners competing annually worldwide; however, no study has compared pacing and performance over a long period.
Objective: This study analyzes the pacing of successful finishers and nonfinishers in multistage ultramarathons worldwide.
Methods: A total of 4079 athletes (men=3288; women=791) competing in 99 multistage ultramarathon events from 1983 to 2021 were analyzed, including the number of participants, age, gender, rank, and running speed of successful finishers.
Cardiac structure and function in response to a multi-stage marathon over 4486 km.
Eur J Prev Cardiol
August 2021
Division of Sports and Exercise Medicine, Department of Sport, Exercise, and Health, Medical Faculty, University of Basel, Switzerland.
Aims: To investigate whether participation in the Trans Europe Foot Race 2009 (TEFR), an ultramarathon race held over 64 consecutive days and 4486 km, led to changes in cardiac structure and function.
Methods: Cardiac magnetic resonance imaging was performed in 20 of 67 participating runners (two women; mean ± SD age 47.8 ± 10.
Musculoskeletal Injuries in Ultra-Endurance Running: A Scoping Review.
Front Physiol
March 2021
University of Washington and Seattle Children's Sports Medicine, Seattle, WA, United States.
Ultra-endurance running (UER) has seen an important increase in participation over the last few decades. Long hours of UER can lead to excessive stress on the body, resulting in musculoskeletal injuries (MSKI). UER is not a uniform sport and events can differ considerably in distance (over 42.
View Article and Find Full Text PDFCarbohydrate intake and ketosis in self-sufficient multi-stage ultramarathon runners.
J Sports Sci
February 2020
Sports Performance Optimisation Research Team, School of Health Sciences, University of Tasmania, Launceston, Australia.
Ultra-endurance athletes accumulate an energy deficit throughout their events and those competing in self-sufficient multi-stage races are particularly vulnerable due to load carriage considerations. Whilst urinary ketones have previously been noted in ultra-endurance exercise and attributed to insufficient carbohydrate (CHO) availability, not all studies have reported concomitant CHO intake. Our aim was to determine changes in blood glucose and β-hydroxybutyrate concentrations over five days (240 km) of a self-sufficient multi-stage ultramarathon in combination with quantification of energy and macronutrient intakes, estimated energy expenditure and evaluation of energy balance.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!