Early-Phase Satellite Cell and Myonuclear Domain Adaptations to Slow-Speed vs. Traditional Resistance Training Programs

Journal of Strength and Conditioning Research
Jennifer R Herman-MontemayorRobert S Staron

Abstract

The purpose of this investigation was to identify adaptations in satellite cell (SC) content and myonuclear domain (MND) after 6-week slow-speed vs. "normal-speed" resistance training programs. Thirty-four untrained females were divided into slow speed (SS), traditional strength (TS), traditional muscular endurance (TE), and nontraining control (C) groups. Three sets each of leg press, squat, and knee extension were performed 2 days per week for the first week and 3 days per week for the following 5 weeks. The SS group performed 6-10 repetition maximum (6-10RM) for each set with 10-second concentric (con) and 4-second eccentric (ecc) contractions for each repetition. Traditional strength and TE performed 6-10RM and 20-30RM, respectively, at "normal" speed (1-2 seconds per con and ecc contractions). Traditional muscular endurance and SS trained at the same intensity (40-60% 1RM), whereas TS trained at 80-85% 1RM. Pretraining and posttraining muscle biopsies were analyzed for fiber cross-sectional area, fiber type, SC content, myonuclear number, and MND. Satellite cell content of type I, IIA, IIAX, and IIX fibers significantly increased in TS. However, SC content of only type IIAX and IIX fibers increased in SS, and there was no ...Continue Reading

References

Jan 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·W SchubertA Starzinski-Powitz
Nov 1, 1987·Journal of Applied Physiology·K C Darr, E Schultz
Aug 1, 1971·The Anatomical Record·F P Moss, C P Leblond
Jan 1, 1994·Reviews of Physiology, Biochemistry and Pharmacology·E Schultz, K M McCormick
Sep 17, 1999·Muscle & Nerve·D L AllenV R Edgerton
Nov 24, 1999·Journal of Applied Physiology·Y OhiraV R Edgerton
May 31, 2001·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·S M RothM A Rogers
Jul 18, 2001·Journal of Applied Physiology·T J Hawke, D J Garry
Feb 1, 1961·The Journal of Biophysical and Biochemical Cytology·A MAURO
Dec 25, 2003·Muscle & Nerve·Fawzi KadiJan Lexell
Jun 26, 2004·The Journal of Physiology·Fawzi KadiJesper L Andersen
Aug 2, 2005·Histochemistry and Cell Biology·Anders ErikssonLars-Eric Thornell
Nov 12, 2005·Histochemistry and Cell Biology·Fawzi KadiJan Henriksson
Nov 30, 2005·Muscle & Nerve·Hans C DreyerRobert A Wiswell
Feb 8, 2006·The International Journal of Biochemistry & Cell Biology·Geoffrey Goldspink
Jun 15, 2006·American Journal of Physiology. Endocrinology and Metabolism·John K PetrellaMarcas M Bamman
Feb 10, 2007·Journal of Applied Physiology·Roddy S O'Connor, Grace K Pavlath
Mar 31, 2007·Journal of Applied Physiology·Marcas M BammanJames M Cross
Aug 29, 2007·Journal of Applied Physiology·John J McCarthy, Karyn A Esser
Dec 21, 2007·Scandinavian Journal of Medicine & Science in Sports·A L Mackey
Aug 11, 2011·Development·John J McCarthyCharlotte A Peterson
Feb 14, 2012·European Journal of Applied Physiology·Mark D SchuenkeRobert S Staron
Aug 17, 2012·American Journal of Physiology. Cell Physiology·Janna R JacksonEsther E Dupont-Versteegden
Sep 13, 2012·Medicine and Science in Sports and Exercise·Naomi M CermakLuc J C Van Loon

❮ Previous
Next ❯

Citations

Mar 7, 2018·Medicine and Science in Sports and Exercise·Miguel S ConceiçãoCarlos Ugrinowitsch
Dec 8, 2017·Physiology·Kevin A MurachCharlotte A Peterson
Sep 7, 2018·Medicine and Science in Sports and Exercise·Thomas BjørnsenTruls Raastad
Jan 13, 2021·Medicine and Science in Sports and Exercise·Pedro LopezRonei S Pinto
Sep 5, 2021·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Kevin A MurachCharlotte A Peterson

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biomechanics

Biomechanics examines the generation of internal forces within the body and investigates the effects and control of forces that act on or are produced on tissues. Here are the latest discoveries.