Universität zu Köln

Willwacher, Steffen, Sleboda, David A., Maehlich, Daniela, Brueggemann, Gert-Peter, Roberts, Thomas J. and Bratke, Grischa (2020). The time course of calf muscle fluid volume during prolonged running. PHYSIOL. REP., 8 (9). HOBOKEN: WILEY. ISSN 2051-817X

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Abstract

Muscle fluid is essential for the biochemistry and the biomechanics of muscle contraction. Here, we provide evidence that muscle fluid volumes undergo significant changes during 75 min of moderate intensity (2.7 +/- 0.4 m/s) running. Using MRI measurements at baseline and after 2.5, 5, 10, 15, 45 and 75 min, we found that the volumes of calf muscles (quantified through average cross-sectional area) in 18 young recreational runners increase (up to 9% in the gastrocnemii) at the beginning and decrease (below baseline levels) at later stages of running. However, the intensity of changes varied between analyzed muscles. We speculate that these changes are induced by muscle activity and dehydration-related changes in osmotic pressure gradients between intramuscular and extramuscular spaces. These findings highlight the complex nature of muscle fluid shifts during prolonged running exercise.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Willwacher, Steffen UNSPECIFIED UNSPECIFIED UNSPECIFIED Sleboda, David A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maehlich, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Brueggemann, Gert-Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Roberts, Thomas J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bratke, Grischa UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-334672
DOI:	10.14814/phy2.14414
Journal or Publication Title:	PHYSIOL. REP.
Volume:	8
Number:	9
Date:	2020
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	2051-817X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SKELETAL-MUSCLE; EXERCISE INTENSITY; PLASMA-VOLUME; WATER; HEAT; T2; COMPARTMENTS; DEHYDRATION; RELAXATION; RESISTANCE Multiple languages Physiology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33467