PMID: 3745051Aug 1, 1986Paper

Physiological responses to prolonged exercise in ultramarathon athletes

Journal of Applied Physiology
C T Davies, M W Thompson

Abstract

The physiological responses of 10 ultramarathon athletes to prolonged exercise at the highest intensity level they could sustain for 4 h have been examined. Energy expenditure for the 4 h of exercise was 14,146 +/- 1,789 kJ, of which 63% was provided by the oxidation of fat. Plasma free fatty acids rose, but the changes in blood lactate concentration (delta 0.2 mmol/l) and exchange ratio (delta 0.05) were small, and the postexercise glycogen content (130 +/- 42 mumol/g) of the vastus lateralis muscles was estimated to be 37-53% of normal resting values. During exercise O2 intake (VO2) increased with time from the 50th to 240th min, the rise becoming significant (P less than 0.01) after 110 min of work. The change in VO2 was equivalent to a rise in relative intensity (%VO2max) of +9.1% and a change of speed of 1.49 km/h. A rise in cardiac frequency compensated for a fall in stroke volume (SV), so that cardiac output was maintained, and the increases in rectal temperature (Tre) (delta 0.63 degree C) and sweat loss (3.49 +/- 0.50 kg, equivalent to 5.5% of body wt) and the decreased mean skin temperature (Tsk) (-1.22 degree C) were within tolerable limits during exercise. Following exercise there was a loss (-25%) of ability to gen...Continue Reading

Citations

Jan 1, 1995·European Journal of Applied Physiology and Occupational Physiology·K Sahlin, J Y Seger
Mar 16, 2002·Journal of Applied Physiology·Romuald LepersGuillaume Y Millet
Oct 23, 2002·Journal of Applied Physiology·G Y MilletY Ballay
Jan 5, 2005·Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée·Gil BoudetAlain Chamoux
Oct 28, 2004·Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée·Andrew P BlaberValerie E Walker
Jun 25, 2005·European Journal of Applied Physiology·Jarrod D PreslandSimeon P Cairns
Oct 8, 2008·Journal of Physiological Anthropology·Takuma ArimitsuTokuo Yano
May 5, 2009·Research Quarterly for Exercise and Sport·Beat KnechtleGötz Kohler
May 18, 2010·Medicine and Science in Sports and Exercise·Hyo Jeong KimMarc Francaux
Mar 26, 2013·Medicine and Science in Sports and Exercise·Philippe GimenezGuillaume Y Millet
Oct 25, 2017·Frontiers in Physiology·Gianluca VernilloGuillaume Y Millet
Oct 11, 2017·American Journal of Human Biology : the Official Journal of the Human Biology Council·Daniel P LongmanMichael P Muehlenbein
May 28, 2019·Frontiers in Physiology·Ahmad Munir Che MuhamedMartin William Thompson
Aug 5, 2004·Medicine and Science in Sports and Exercise·Nicolas PlaceGuillaume Y Millet
Feb 18, 2004·Sports Medicine·Guillaume Y Millet, Romuald Lepers
Apr 11, 2006·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Kotaro KawaguchiYagesh Bhambhani
Sep 1, 2005·Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée·Joaquin Sanchis MoysiJosé A L Calbet
Feb 20, 2010·Journal of Applied Physiology·Vincent MartinGuillaume Y Millet
Jul 31, 2007·European Journal of Applied Physiology·Kim PetersenKlavs Madsen
Mar 3, 2011·PloS One·Guillaume Y MilletVincent Martin
Jun 22, 2011·Journal of Strength and Conditioning Research·Philip R HayesKevin Thomas
Jul 28, 2016·European Journal of Applied Physiology·Marlene GiandoliniGuillaume Y Millet
Nov 4, 2016·European Journal of Sport Science·Mark Burnley, Andrew M Jones
May 5, 2018·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Guillaume Y MilletJohn Temesi
Mar 29, 2018·Praxis·Beat Knechtle, Pantelis T Nikolaidis
Jun 19, 2018·Frontiers in Physiology·Beat Knechtle, Pantelis T Nikolaidis
Jan 1, 1988·European Journal of Applied Physiology and Occupational Physiology·T D NoakesA J Benade
Nov 18, 2000·Medicine and Science in Sports and Exercise·R LepersJ van Hoecke
Jan 18, 2002·Journal of Applied Physiology·G Y MilletG Lattier
Jul 12, 2007·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Stephen S Cheung
Aug 21, 2008·Journal of Strength and Conditioning Research·Sébastien Sangnier, Claire Tourny-Chollet
Apr 7, 2007·Medicine and Science in Sports and Exercise·Timothy D Noakes
Sep 2, 2011·European Journal of Applied Physiology·Stefano LazzerPietro Enrico di Prampero
Aug 7, 2012·Journal of the Royal Army Medical Corps·A Nicol, O Donoghue
Mar 11, 2011·Journal of Sports Sciences·Juan Manuel García-MansoMiriam Quiroga
Feb 15, 2015·European Journal of Applied Physiology·Jean-René Lacour, Muriel Bourdin
Aug 24, 2018·Frontiers in Physiology·Jeferson O SantanaErico C Caperuto
May 6, 2020·The International Journal of Cardiovascular Imaging·Antonello D'AndreaUNKNOWN Echocardiography Study Group of the Italian Society of Cardiology
Mar 1, 1992·Zeitschrift für Ernährungswissenschaft·W LanghansD Braun
Aug 30, 2008·Journal of Applied Physiology·Samuel VergesGuillaume Y Millet
Oct 19, 2017·European Journal of Applied Physiology·Kristopher A Pruitt, Justin M Hill

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.