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Effects of Isometric and Dynamic Post-activation Potentiation Protocols on Maximal Sprint Performance.
MedLine Citation:
PMID:  23302751     Owner:  NLM     Status:  Publisher    
ABSTRACT: This study examined the effects of 3 types of post-activation potentiation (PAP) protocols (single joint isometric, multi-joint isometric and multi-joint dynamic) on subsequent 10-, 20- and 30-meter sprint performance in 12 well-trained male track athletes (mean ± SD age = 22.4 ± 3.2 years). The subjects performed four protocols in a randomized order on different days: control (4 minutes of passive rest), maximum voluntary isometric knee extension (3 repetitions of 3-seconds isometric knee extension), maximum voluntary isometric back squat (3 repetitions of 3-seconds isometric squat) and dynamic back squat (3 repetitions of back squats at 90% 1 repetition maximum). After each protocol, a 4-minute recovery period was incorporated prior to a 30-meter maximal sprint assessment. Maximal sprint times at 10-, 20- and 30-meter were measured using timing gates to reflect sprint performance. One-way repeated measures Analyses of Variance revealed no differences in sprint performance among the four protocols at 10-, 20- or 30-meter intervals. There were, however, large individual variations in the response to the PAP protocols with some athletes benefiting from the PAP effect and others not. In summary, this study showed no enhancement of short-distance sprint performance after PAP protocols with a 4-minute recovery period, regardless of isometric or dynamics, single-joint or multi-joint. Coaches considering the use of PAP protocols to improve sprinting performance of their athletes should exploit the effectiveness of different PAP protocols on an individual basis.
Julian J H Lim; Pui W Kong
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-8
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Sports Science Centre, Singapore Sports Institute, Singapore Physical Education and Sports Science Academic Group, National Institute of Education, Nanyang Technological University, Singapore.
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