Journal article
Joint-level energetics differentiate isoinertial from speed-power resistance training—a Bayesian analysis
PeerJ, Vol.6, e4620
2018
Abstract
Background: There is convincing evidence for the benefits of resistance training on vertical jump improvements, but little evidence to guide optimal training prescription. The inability to detect small between modality effects may partially reflect the use of ANOVA statistics. This study represents the results of a sub-study from a larger project investigating the effects of two resistance training methods on load carriage running energetics. Bayesian statistics were used to compare the effectiveness of isoinertial resistance against speed-power training to change countermovement jump (CMJ) and squat jump (SJ) height, and joint energetics. Methods:Active adults were randomly allocated to either a six-week isoinertial (n = 16; calf raises, leg press, and lunge), or a speed-power training program (n = 14; countermovement jumps, hopping, with hip flexor training to target pre-swing running energetics). Primary outcome variables included jump height and joint power. Bayesian mixed modelling and Functional Data Analysis were used, where significance was determined by a non-zero crossing of the 95% Bayesian Credible Interval (CrI). Results: The gain in CMJ height after isoinertial training was 1.95 cm (95% CrI [0.85-3.04] cm) greater than the gain after speed-power training, but the gain in SJ height was similar between groups. In the CMJ, isoinertial training produced a larger increase in power absorption at the hip by a mean 0.018% (equivalent to 35 W) (95% CrI [0.007-0.03]), knee by 0.014% (equivalent to 27 W) (95% CrI [0.006-0.02]) and foot by 0.011% (equivalent to 21 W) (95% CrI [0.005-0.02]) compared to speed-power training. Discussion: Short-term isoinertial training improved CMJ height more than speed-power training. The principle adaptive difference between training modalities was at the level of hip, knee and foot power absorption.
Details
- Title
- Joint-level energetics differentiate isoinertial from speed-power resistance training—a Bayesian analysis
- Authors
- Bernard X W Liew (Author) - University of Birmingham, United KingdomChristopher C Drovandi (Author) - Queensland University of TechnologySamuel Clifford (Author) - Queensland University of TechnologyJustin W L Keogh (Author) - University of the Sunshine Coast - Faculty of Arts, Business and LawSusan Morris (Author) - Curtin University of TechnologyKevin Netto (Author) - Curtin University of Technology
- Publication details
- PeerJ, Vol.6, e4620
- Publisher
- PeerJ, Ltd.
- Date published
- 2018
- DOI
- 10.7717/peerj.4620
- ISSN
- 2167-8359
- Copyright note
- Copyright © 2018 Liew et al. Licence: This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99450428902621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Sport Sciences