dc.contributor.author |
Loiselle, Denis |
en |
dc.contributor.author |
Johnston, CM |
en |
dc.contributor.author |
Han, June |
en |
dc.contributor.author |
Nielsen, Poul |
en |
dc.contributor.author |
Taberner, Andrew |
en |
dc.date.accessioned |
2016-04-21T03:53:18Z |
en |
dc.date.issued |
2016-02 |
en |
dc.identifier.citation |
American Journal of Physiology - Heart and Circulatory Physiology, 2016, 310 (3), pp. H311 - H325 |
en |
dc.identifier.issn |
0363-6135 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/28618 |
en |
dc.description.abstract |
The contraction of muscle is characterized by the development of force and movement (mechanics) together with the generation of heat (metabolism). Heat represents that component of the enthalpy of ATP hydrolysis that is not captured by the microscopic machinery of the cell for the performance of work. It arises from two conceptually and temporally distinct sources: initial metabolism and recovery metabolism. Initial metabolism comprises the hydrolysis of ATP and its rapid regeneration by hydrolysis of phosphocreatine (PCr) in the processes underlying excitation-contraction coupling and subsequent cross-bridge cycling and sliding of the contractile filaments. Recovery metabolism describes those process, both aerobic (mitochondrial) and anaerobic (cytoplasmic), that produce ATP, thereby allowing the regeneration of PCr from its hydrolysis products. An equivalent partitioning of muscle heat production is often invoked by muscle physiologists. In this formulation, total enthalpy expenditure is separated into external mechanical work (W) and heat (Q). Heat is again partitioned into three conceptually distinct components: basal, activation, and force dependent. In the following mini-review, we trace the development of these ideas in parallel with the development of measurement techniques for separating the various thermal components. |
en |
dc.description.uri |
http://ajpheart.physiology.org/ |
en |
dc.format.medium |
Print-Electronic |
en |
dc.language |
eng |
en |
dc.publisher |
American Physiological Society |
en |
dc.relation.ispartofseries |
American Journal of Physiology - Heart and Circulatory Physiology |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0002-9513/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.title |
Muscle heat: a window into the thermodynamics of a molecular machine |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1152/ajpheart.00569.2015 |
en |
pubs.issue |
3 |
en |
pubs.begin-page |
H311 |
en |
pubs.volume |
310 |
en |
dc.description.version |
AM - Accepted Manuscript |
en |
dc.rights.holder |
Copyright:
American Physiological Society |
en |
dc.identifier.pmid |
26589327 |
en |
pubs.author-url |
http://ajpheart.physiology.org/content/310/3/H311 |
en |
pubs.end-page |
H325 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.subtype |
Review |
en |
pubs.elements-id |
515061 |
en |
pubs.org-id |
Bioengineering Institute |
en |
pubs.org-id |
ABI Associates |
en |
pubs.org-id |
Engineering |
en |
pubs.org-id |
Engineering Science |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Science Research |
en |
pubs.org-id |
Maurice Wilkins Centre (2010-2014) |
en |
dc.identifier.eissn |
1522-1539 |
en |
pubs.record-created-at-source-date |
2016-04-21 |
en |
pubs.dimensions-id |
26589327 |
en |