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Considerations for determining the time course of post-activation potentiation

Nibali, Maria L., Chapman, Dale W., Robergs, Robert A. and Drinkwater, Eric J. 2015, Considerations for determining the time course of post-activation potentiation, Applied physiology, nutrition and metabolism, vol. 40, no. 11, pp. 1163-1170, doi: 10.1139/apnm-2015-0175.

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Title Considerations for determining the time course of post-activation potentiation
Author(s) Nibali, Maria L.
Chapman, Dale W.
Robergs, Robert A.
Drinkwater, Eric J.ORCID iD for Drinkwater, Eric J. orcid.org/0000-0002-9594-9360
Journal name Applied physiology, nutrition and metabolism
Volume number 40
Issue number 11
Start page 1163
End page 1170
Total pages 8
Publisher NRC Research Press
Place of publication Ottawa, Ont.
Publication date 2015-11
ISSN 1715-5312
1715-5320
Keyword(s) complex training
jump squats
kinetics
post-activiation potentiation
power output
Summary We sought to determine the efficacy of using a continuous time course trial to assess the temporal profile of post-activation potentiation and to determine the time course of potentiation of discrete jump squat kinetic and kinematic variables. Eight physically trained men performed jump squats before and 4, 8, and 12 min after a 5-repetition maximum back squat. Time intervals were assessed in 3 discontinuous trials (each time interval assessed in a separate trial) and in 1 continuous trial (all time intervals assessed in a single trial). Percentage differences between continuous and discontinuous trials at each time interval were mostly insubstantial. Discrete variables displayed a diverse time course (effect size: trivial to large); time to maximal values ranged between 5.00 ± 2.53 min (concentric peak force) and 9.50 ± 2.98 min (eccentric mean force). Eccentric variables (8.58 ± 3.56 min) took longer to peak than concentric variables (6.64 ± 2.93 min) (effect size: small). Individual subjects attained maximal values for kinetic and kinematic variables at different time intervals, yet the 4-min interval typically displayed the greatest magnitude and frequency of potentiation. We conclude that a continuous time course trial does not substantially influence performance of subsequent jumps and is appropriate for determining the temporal profile of potentiation, which is influenced by discrete jump squat kinetic and kinematic variables and individual differences.
Language eng
DOI 10.1139/apnm-2015-0175
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 ©2015, NRC Research Press
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082919

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