Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


ohiou1235763955.pdf (1.3 MB)

ETD Abstract Container

Abstract Header

Muscular Adaptations to Slow-Speed Versus Traditional Resistance Training Protocols

Herman, Jennifer R.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1235763955

Abstract Details

2009, Doctor of Philosophy (PhD), Ohio University, Biological Sciences (Arts and Sciences).
Purpose: The purpose of this study was to investigate muscle fiber adaptations in response to slow-speed vs. “normal-speed” resistance training protocols. Methods: Thirty-four healthy adult females (21.1 ± 2.7 yr.) were randomly divided into four groups: slow-speed (SS), traditional strength (TS), traditional muscular endurance (TE), and non-exercising control (C). Three sets of 3 exercises (leg press, squat, and knee extension) were performed 2d/wk for 1 week and 3d/wk for 5 weeks. For each session, SS performed 6-10 repetitions maximum (6-10 RM) for each set with 10s con and 4s ecc contractions for each repetition. TS and TE performed 6-10 RM and 20-30 RM, respectively, at “normal” speed (1-2s/con and ecc contraction). TE and SS trained at the same relative intensity (40-60 % 1RM), whereas TS trained at 80-85 % 1RM. Pre- and post-training vastus lateralis muscle biopsies were analyzed for fiber-type composition, myosin heavy chain (MHC) content, fiber cross-sectional area (CSA), myonuclear domain (MND), myonuclear number, and satellite cells (SC) identified with anti-neural cell adhesion molecule (NCAM+). Results: 1) The percentage of type IIX fibers decreased and IIAX increased in TS, SS, and TE. However, only TS showed an increase in type IIA fibers. 2) The CSA of I, IIA, and IIX fibers increased in TS, whereas only IIA and IIX increased in SS. 3) The percent fiber area of type IIX decreased in TS and SS, and IIA increased in TS. MHCIIx decreased in TS, SS, and TE, and MHCIIa increased in TS. 4) SC content increased in type I, IIA, IIAX, and IIX fibers for TS, while only IIAX and IIX increased in SS. 5) MND increased in type I, IIA, IIAX, and IIX fibers in TS, and increased only in type IIA for SS. 6) There was no significant change in myonuclear number following training in any group. Conclusions: Slow-speed resistance training appears to be more beneficial than training with a similar resistance at a normal speed. However, training at higher intensity (80-85% 1RM) at normal speed resulted in the greatest overall muscle fiber response in each of the variables assessed.
Robert S. Staron (Advisor)
Brian Clark (Committee Member)
Roger Gilders (Committee Member)
Robert Hikida (Committee Member)
178 p.
Cellular Biology
skeletal muscle biology; resistance training; fiber type; hypertrophy; satellite cells; myonuclear domain; slow-speed; mATPase histochemistry

Recommended Citations

Citations

  • Herman, J. R. (2009). Muscular Adaptations to Slow-Speed Versus Traditional Resistance Training Protocols [Doctoral dissertation, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1235763955

    APA Style (7th edition)

  • Herman, Jennifer. Muscular Adaptations to Slow-Speed Versus Traditional Resistance Training Protocols. 2009. Ohio University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1235763955.

    MLA Style (8th edition)

  • Herman, Jennifer. "Muscular Adaptations to Slow-Speed Versus Traditional Resistance Training Protocols." Doctoral dissertation, Ohio University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1235763955

    Chicago Manual of Style (17th edition)

ohiou1235763955
1,971
© 2009, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.