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Testing of the maximal dynamic output hypothesis in trained and untrained subjects.
J Strength Cond Res. 2010 May; 24(5):1269-76.JS

Abstract

The maximal dynamic output (MDO) hypothesis is a newly proposed concept, which suggests that the muscular system of the lower limbs is designed to produce maximal power output when performing countermovement vertical jumping (CMJ) at body mass as opposed to other loading conditions. However, it is unclear if the MDO concept can be applied to individuals with different levels of maximal strength. The purpose of this investigation was to determine if subjects, who have distinct differences in maximal strength, maximize CMJ power at body mass. Fourteen male strength-power trained subjects (squat 1 repetition maximum (1RM)-to-body mass ratio = 1.96 +/- 0.24) and 6 untrained male subjects (squat 1RM-to-body mass ratio = 0.94 +/- 0.18) completed CMJs with loads that were less than, equal to, and greater than body mass. Loads less than body mass were accomplished with a custom-designed unloading apparatus, and loads greater than body mass were accomplished with a barbell and weights. In both groups, mean values for CMJ peak and mean power were greatest during the body mass jump. Power outputs at body mass were significantly different (p <or= 0.05) than power outputs at various conditions of loading and unloading. These data support the MDO hypothesis and its application to individuals with significantly different 1RM-to-body mass ratios. Additionally, these data further support the idea that body mass CMJs are a theoretically sound way to train for power because of the maximal power outputs that are produced during this condition.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Nuzzo JL
Department of Exercise and Rehabilitative Sciences, Slippery Rock University, Slippery Rock, Pennsylvania, USA. james.nuzzo@sru.edu
McBride JM
No affiliation info available
Dayne AM
No affiliation info available
Israetel MA
No affiliation info available
Dumke CL
No affiliation info available
Triplett NT
No affiliation info available

MeSH

AdultBiomechanical PhenomenaHumansLegMaleModels, BiologicalMuscle StrengthPhysical ExertionResistance TrainingWeight LiftingWeight-Bearing

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20386123

Citation

Nuzzo, James L., et al. "Testing of the Maximal Dynamic Output Hypothesis in Trained and Untrained Subjects." Journal of Strength and Conditioning Research, vol. 24, no. 5, 2010, pp. 1269-76.
Nuzzo JL, McBride JM, Dayne AM, et al. Testing of the maximal dynamic output hypothesis in trained and untrained subjects. J Strength Cond Res. 2010;24(5):1269-76.
Nuzzo, J. L., McBride, J. M., Dayne, A. M., Israetel, M. A., Dumke, C. L., & Triplett, N. T. (2010). Testing of the maximal dynamic output hypothesis in trained and untrained subjects. Journal of Strength and Conditioning Research, 24(5), 1269-76. https://doi.org/10.1519/JSC.0b013e3181d68691
Nuzzo JL, et al. Testing of the Maximal Dynamic Output Hypothesis in Trained and Untrained Subjects. J Strength Cond Res. 2010;24(5):1269-76. PubMed PMID: 20386123.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Testing of the maximal dynamic output hypothesis in trained and untrained subjects. AU - Nuzzo,James L, AU - McBride,Jeffrey M, AU - Dayne,Andrea M, AU - Israetel,Michael A, AU - Dumke,Charles L, AU - Triplett,N Travis, PY - 2010/4/14/entrez PY - 2010/4/14/pubmed PY - 2010/8/5/medline SP - 1269 EP - 76 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 24 IS - 5 N2 - The maximal dynamic output (MDO) hypothesis is a newly proposed concept, which suggests that the muscular system of the lower limbs is designed to produce maximal power output when performing countermovement vertical jumping (CMJ) at body mass as opposed to other loading conditions. However, it is unclear if the MDO concept can be applied to individuals with different levels of maximal strength. The purpose of this investigation was to determine if subjects, who have distinct differences in maximal strength, maximize CMJ power at body mass. Fourteen male strength-power trained subjects (squat 1 repetition maximum (1RM)-to-body mass ratio = 1.96 +/- 0.24) and 6 untrained male subjects (squat 1RM-to-body mass ratio = 0.94 +/- 0.18) completed CMJs with loads that were less than, equal to, and greater than body mass. Loads less than body mass were accomplished with a custom-designed unloading apparatus, and loads greater than body mass were accomplished with a barbell and weights. In both groups, mean values for CMJ peak and mean power were greatest during the body mass jump. Power outputs at body mass were significantly different (p <or= 0.05) than power outputs at various conditions of loading and unloading. These data support the MDO hypothesis and its application to individuals with significantly different 1RM-to-body mass ratios. Additionally, these data further support the idea that body mass CMJs are a theoretically sound way to train for power because of the maximal power outputs that are produced during this condition. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/20386123/Testing_of_the_maximal_dynamic_output_hypothesis_in_trained_and_untrained_subjects_ DB - PRIME DP - Unbound Medicine ER -