Journal ArticleDOI
Acute blood biochemical alterations in response to marathon running.
TLDR
Altering in adrenalsympathico function were indicated by increased levels of cortisol, epinephrine, and norepinephrine and water and electrolyte balance was not sufficient to maintain body weight, the runners losing approximately 2.8 kg.Abstract:
Adrenal-sympathico function, blood carbohydrates and lipids, and water and electrolyte balance were studied in six highly trained male marathon runners prior to and after running a marathon (26.2 miles; 42.2 km) and on control days corresponding to the above times. Fluid intake was not sufficient to maintain body weight, the runners losing approximately 2.8 kg. Estimated plasma volume losses (161 ml, 4.4%) indicated that most of the fluid loss was extravascular. Tre rose an average 2.4 degrees C and a significant negative correlation between running time and rise in Tre was observed. Glucose, fatty acids, glycerol, hemoglobin, and plasma proteins were significantly elevated after the race. Small but statistically significant increments in lactate and pyruvate were also observed. Alterations in adrenal-sympathico function were indicated by increased levels of cortisol, epinephrine, and norepinephrine.read more
Citations
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Cardiovascular Effects of Exercise Training Molecular Mechanisms
TL;DR: The aim of this review is to provide a bird's-eye view on what is known and unknown about the physiological and biochemical mechanisms involved in mediating exercise-induced cardiovascular effects and to present key data on exercise effects on cardiac and vascular function.
Journal ArticleDOI
Human water needs
TL;DR: Day-to-day hydration is generally well maintained so long as food and fluid are readily available, and the individual variability between athletes can be substantial.
Journal ArticleDOI
Applied physiology of marathon running.
Bertil Sjödin,Jan Svedenhag +1 more
TL;DR: Present indications are that marathon runners, compared with normal individuals, have a higher turnover rate in fat metabolism at given high exercise intensities expressed both in absolute (m/sec) and relative %V̇O2 max terms.
Journal ArticleDOI
Effect of marathon running on hematologic and biochemical laboratory parameters, including cardiac markers.
Alexander Kratz,Kent B. Lewandrowski,Arthur J. Siegel,Kelly Y. Chun,James G. Flood,Elizabeth M. Van Cott,Elizabeth Lee-Lewandrowski +6 more
TL;DR: The increase in WBC counts was due mainly to neutrophilia and monocytosis, with a relative decrease in circulating lymphocytes, consistent with an inflammatory reaction to tissue injury.
Journal ArticleDOI
Thermoregulation and marathon running: biological and environmental influences.
TL;DR: The correlation between running speed and Tre, especially over the final stages of a marathon event, is often significant but fails to reliably explain more than a fraction of the variability in post-marathon Tre; the submaximal exercise intensities observed throughout 42km races suggest the need for other synergistic factors or circumstances in explaining this occurrence.
References
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Book
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TL;DR: In this article, the authors introduce the principles of estimation and inference: means and variance, means and variations, and means and variance of estimators and inferors, and the analysis of factorial experiments having repeated measures on the same element.
Journal ArticleDOI
Statistical Principles in Experimental Design
TL;DR: This chapter discusses design and analysis of single-Factor Experiments: Completely Randomized Design and Factorial Experiments in which Some of the Interactions are Confounded.
Journal Article
Evidence for the existence of monoamine-containing neurons in the central nervous system. i. demonstration of monoamines in the cell bodies of brain stem neurons.
Dahlstroem A,Fuxe K +1 more
Journal ArticleDOI
Calculation of percentage changes in volumes of blood, plasma, and red cells in dehydration.
D. B. Dill,D L Costill +1 more
TL;DR: Changes in PV calculated from the increase in plasma protein concentration averaged 7.5(z compared with 12.2 y0 calculated from changes in Hb and Hct, the difference could be accounted for by a loss of 6v10 plasma protein from the circulation.
Journal ArticleDOI
Colorimetric ultramicro method for the determination of free fatty acids
TL;DR: In this article, a colorimetric ultramicro method for the determination of serum and tissue fatty acids has been improved in sensitivity and selectivity by extracting cobalt rather than copper soaps by means of a solvent lighter than water instead of chloroform.
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Calculation of percentage changes in volumes of blood, plasma, and red cells in dehydration.
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