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Volume, intensity, and timing of muscle power potentiation are variable

Chaouachi, Anis, Poulos, Nick, Abed, Fathi, Turki, Olfa, Brughelli, Matt, Chamari, Karim, Drinkwater, Eric J. and Behm, David G. 2011, Volume, intensity, and timing of muscle power potentiation are variable, Applied physiology, nutrition and metabolism, vol. 36, no. 5, pp. 736-747, doi: 10.1139/h11-079.

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Title Volume, intensity, and timing of muscle power potentiation are variable
Author(s) Chaouachi, Anis
Poulos, Nick
Abed, Fathi
Turki, Olfa
Brughelli, Matt
Chamari, Karim
Drinkwater, Eric J.
Behm, David G.
Journal name Applied physiology, nutrition and metabolism
Volume number 36
Issue number 5
Start page 736
End page 747
Total pages 12
Publisher NRC Research Press
Place of publication Ottawa, Ont.
Publication date 2011-10-13
ISSN 1715-5312
Keyword(s) postactivation potentiation
magnitude-based inferences
force
velocity
recovery
Summary Whereas muscle potentiation is consistently demonstrated with evoked contractile properties, the potentiation of functional and physiological measures is inconsistent. The objective was to compare a variety of conditioning stimuli volumes and intensities over a 15-min recovery period. Twelve volleyball players were subjected to conditioning stimuli that included 10 repetitions of half squats with 70% of 1-repetition maximum (RM) (10 × 70), 5 × 70, 5 × 85, 3 × 85, 3 × 90, 1 × 90, and control. Jump height, power, velocity, and force were measured at baseline, 1, 3, 5, 10, and 15 min. Data were analysed with a 2-way repeated measure ANOVA and magnitude-based inferences. The ANOVA indicated significant decreases in jump height, power, and velocity during recovery. This should not be interpreted that no potentiation occurred. Each dependent variable reached a peak at a slightly different time: peak jump height (2.8 ± 2.3 min), mean power (3.6 ± 3.01 min), peak power (2.5 ± 1.8 min), and peak velocity (2.5 ± 1.8 min). Magnitude-based inference revealed that both the 5 × 70 and 3 × 85 protocol elicited changes that exceeded 75% likelihood of exceeding the smallest worthwhile change (SWC) for peak power and velocity. The 10 × 70 and the 5 × 70 had a substantial likelihood of potentiating peak velocity and mean power above the SWC, respectively. Magnitude-based inferences revealed that while no protocol had a substantial likelihood of potentiating the peak vertical jump, the 5 × 70 had the most consistent substantial likelihood of increasing the peak of most dependent variables. We were unable to consistently predict if these peaks occurred at 1, 3, or 5 min poststimulation, though declines after 5 min seems probable.
Language eng
DOI 10.1139/h11-079
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2011, NRC Research Press
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083048

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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