Muscle metabolic economy is inversely related to exercise intensity and type II myofiber distribution

Muscle & Nerve
G R HunterR L Weinsier

Abstract

It is not known what causes the well-established inverse relationship between whole-body exercise economy and exercise intensity. The purpose of this study was to: (1) evaluate muscle exercise economy at 45%, 70%, and maximum isometric strength using 31P magnetic resonance spectroscopy (31P-MRS); and (2) determine the relationship between percent type II muscle fiber cross-section, whole-body exercise economy, and muscle exercise economy. Subjects included 32 premenopausal women. Muscle exercise economy was significantly different across the three exercise intensities (28.1 +/- 10.4, 24.8 +/- 8.2, and 20.2 +/- 7.5 N/cm2. mmol/L adenosine triphosphate [ATP] for the 45%, 70%, and maximum intensities, respectively). Percent type II muscle area was significantly related to whole-body metabolic economy during activities of daily living (r = -0.68) and 31P-MRS muscle metabolic economy during isometric plantar flexion (r = -0.53). These data suggest that skeletal muscle becomes less economical as force production increases, and that these decreases in metabolic economy may be related to increased dependence on inefficient type II muscle.

References

May 1, 1975·The Histochemical Journal·V R EdgertonD R Simpson
Apr 1, 1978·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·L B Gladden, H G Welch
Sep 1, 1977·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·C M Donovan, G A Brooks
Jun 1, 1975·Journal of Applied Physiology·G A Gaesser, G A Brooks
Jan 1, 1973·Journal of the Neurological Sciences·M A JohnsonD Appleton
Mar 1, 1974·The American Journal of Physiology·I R Wendt, C L Gibbs
May 1, 1973·The American Journal of Physiology·I R Wendt, C L Gibbs
Jul 1, 1969·Journal of Applied Physiology·J H Wilmore
Dec 1, 1982·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·G C ElderR Roberts
Apr 1, 1983·Physiological Reviews·H J Freund
Mar 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·G J KempG K Radda
Jul 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M Boska
Sep 1, 1996·Medicine and Science in Sports and Exercise·M S TreuthM Williams
Jun 1, 1997·Medicine and Science in Sports and Exercise·B R LondereeD Lottmann
Jul 17, 1998·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·G R HunterD E Larson
Sep 26, 2001·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·B R NewcomerR L Weinsier

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Citations

Sep 26, 2009·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·T LangT B Harris
Jun 17, 2005·European Journal of Applied Physiology·Gary R HunterBradley R Newcomer
Sep 2, 2008·European Journal of Applied Physiology·Gary R HunterNuala M Byrne
Mar 4, 2009·European Journal of Applied Physiology·Gwenael LayecDavid Bendahan
Oct 26, 2010·European Journal of Applied Physiology·Gary R HunterBradley R Newcomer
Jan 14, 2011·European Journal of Applied Physiology·Gary R HunterBradley R Newcomer
Feb 15, 2003·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Marcas M BammanGary R Hunter
Sep 4, 2004·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·I Mark OlfertOdile Mathieu-Costello
Jan 15, 2010·Current Opinion in Pulmonary Medicine·Roberto A Rabinovich, Jordi Vilaró
May 19, 2007·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Bovorn SirikulBradley R Newcomer
Sep 23, 2003·American Journal of Respiratory and Critical Care Medicine·Russell S RichardsonPeter D Wagner
Aug 21, 2008·Journal of Strength and Conditioning Research·Sébastien Sangnier, Claire Tourny-Chollet
Apr 27, 2004·Sports Medicine·Gary R HunterMarcas M Bamman
Feb 25, 2014·Medicine and Science in Sports and Exercise·Andrew J ShawJonathan P Folland
Feb 16, 2013·Journal of Applied Physiology·Raymond C BrowningRaoul F Reiser
Feb 6, 2007·Medicine and Science in Sports and Exercise·Jan HoffJan Helgerud
Jun 5, 2007·Medicine and Science in Sports and Exercise·Hélène PerraultJean Bourbeau
Mar 11, 2010·Medicine and Science in Sports and Exercise·Nicolas PeyrotPascale Duche
Jan 27, 2011·Medicine and Science in Sports and Exercise·Gary R HunterBradley R Newcomer
Oct 12, 2011·Medicine and Science in Sports and Exercise·Nicolas PeyrotPascale Duche
Dec 8, 2010·The Journal of Physiology·Daniel T CannonHarry B Rossiter
Aug 14, 2012·Maturitas·Massimo VenturelliRussell S Richardson
Jun 25, 2014·Free Radical Biology & Medicine·Fabrisia AmbrosioAaron Barchowsky
Dec 30, 2014·Medicine and Science in Sports and Exercise·Jinkyung ChoHyunsik Kang
Jul 31, 2012·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·T A BeckittP M Lamont
Feb 27, 2015·Journal of Strength and Conditioning Research·Gary R HunterBradley R Newcomer
Feb 15, 2015·European Journal of Applied Physiology·Jean-René Lacour, Muriel Bourdin
Apr 29, 2011·Diabetes·Douglas E Befroy, Gerald I Shulman
Jan 19, 2018·The Journal of Physiology·Seungmoon Song, Hartmut Geyer
May 17, 2018·European Journal of Applied Physiology·Juliano H BorgesGary R Hunter
Jul 21, 2004·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·G R HunterB E Darnell
Dec 12, 2012·Journal of Applied Physiology·Massimo Venturelli, Russell S Richardson
Aug 29, 2014·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Anita D ChristieJane A Kent
May 28, 2019·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Tatiane PiuccoRicardo Dantas de Lucas
Dec 18, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Fabian NiessMartin Meyerspeer
Jun 5, 2015·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Gwenael LayecRussell S Richardson
Aug 9, 2018·European Journal of Applied Physiology·Nathan CaronGeorges Dalleau
Apr 17, 2013·Journal of Applied Physiology·Gwenael LayecTodd M Manini
May 4, 2021·Journal of Physical Therapy Science·Tatsuya IgawaAkira Kubo
Jun 11, 2021·Circulation Research·Mary M McDermottLuigi Ferrucci

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