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Effect of Different Types of Conditioning Contraction on Upper Body Postactivation Potentiation

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Author
Esformes, Joseph I.
Keenan, Matthew
Moody, Jeremy A.
Bampouras, Theodoros
Date
2011-01
Acceptance date
2011
Type
Article
Publisher
Lippincott, Williams and Wilkins
ISSN
1533-4295
Metadata
Show full item record
Abstract
Muscle contractions preceding an activity can result in increased force generation (postactivation potentiation [PAP]). Although the type of muscular contractions could affect subsequent strength and power performance, little information exists on their effects. The purpose of this study was to examine PAP effects produced by isometric (ISO), concentric (CON), eccentric (ECC), or concentric-eccentric (DYN) conditioning contractions on upper body force and power performance. Ten male, competitive rugby players (mean ± SD: age 20.4 ± 0.8 years, height 177.0 ± 8.1 cm, body mass 90.2 ± 13.8 kg) performed a ballistic bench press throw (BBPT) followed by a 10-minute rest and one of the conditioning contractions. After a 12-minute rest, the subjects performed another BBPT (post-BBPT). The conditioning contractions, applied on separate days and in counterbalanced randomized order, were a 7-second isometric barbell bench press for ISO and 1 set of 3 bench press repetitions at 3 repetition maximum for CON, ECC, and DYN (each repetition lasting 2 seconds for CON and ECC, overall execution time <7 seconds for DYN). Peak power (Ppeak), peak force (Fpeak), maximum distance (Dmax) and rate of force development (RFD) were measured using a linear position transducer. Electromyography (EMG) of the pectoralis major and triceps brachii was also recorded. The ISO produced significantly higher Ppeak (587 ± 116 and 605 ± 126 W for pre- and post-BBPT, respectively; p < 0.05). No significant differences in Ppeak were revealed for CON, ECC, and DYN (p > 0.05), and no significant differences existed in Fpeak, Dmax, and RFD for ISO, CON, ECC, and DYN (p > 0.05). Finally, EMG was not significantly different between pre- and post-BBPT for any of the conditioning contractions (p > 0.05). Isometric contractions appear to be the only conditioning contractions increasing upper body power output after long resting periods.
Journal/conference proceeding
Journal of Strength and Conditioning Research;
Citation
Esformes, J.I., Keenan, M., Moody, J. and Bampouras, T.M. (2011) 'Effect of different types of conditioning contraction on upper body postactivation potentiation', Journal of Strength & Conditioning Research, 25(1), pp.143-148. DOI: 10.1519/JSC.0b013e3181fef7f3.
URI
http://hdl.handle.net/10369/10591
DOI
https://doi.org/10.1519/JSC.0b013e3181fef7f3
Description
Article published in Strength and Conditioning Journal in January 2011, available open access at: https://doi.org/10.1519/JSC.0b013e3181fef7f3.
Rights
http://www.rioxx.net/licenses/all-rights-reserved
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
Collections
  • Sport Research Groups [1083]

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