Home Current Issue Previous Issues Published Ahead-of-Print Collections For Authors Journal Info
Skip Navigation LinksHome > December 2012 - Volume 26 - Issue 12 > The Effects of Potentiating Stimuli Intensity Under Varying...
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e318270fc56
Original Research

The Effects of Potentiating Stimuli Intensity Under Varying Rest Periods on Vertical Jump Performance and Power

Lowery, Ryan P.1; Duncan, Nevine M.1; Loenneke, Jeremy P.2; Sikorski, Eric M.3; Naimo, Marshall A.1; Brown, Lee E.4; Wilson, Floyd G.5; Wilson, Jacob M.1

Collapse Box

Abstract

Abstract: Lowery, RP, Duncan, NM, Loenneke, JP, Sikorski, EM, Naimo, MA, Brown, LE, Wilson, FG, and Wilson, JM. The effects of potentiating stimuli intensity under varying rest periods on vertical jump performance and power. J Strength Cond Res 26(12): 3320–3325, 2012—Previous research has demonstrated that post-activation potentiation (PAP) increases in an intensity-dependent manner. However, these studies did not control for volume loads. The purpose of this study was to investigate the effects of varying intensities and rest period lengths, while controlling for volume load, on vertical jump (VJ) performance. Thirteen men, aged 21 ± 3 years with an average relative full squat of 1.7 ± 2 times their body weight, were recruited for this study. Participants were assigned to 3 different experimental sessions that required them to perform the back squat at 56% (low intensity), 70% (moderate intensity), and 93% (high intensity) of their 1 repetition maximums. Vertical jump height and power were recorded at 0, 2, 4, 8, and 12 minutes after squat. There was a significant condition by time interaction for VJ height and power, in which both variables did not change in the low-intensity condition, whereas decreasing immediately after squat for both the moderate- and high-intensity conditions. In the moderate- and high-intensity conditions, VJ height and power increased and peaked at minute 4 and returned to baseline by minutes 8 and 12. These results indicate that when controlling for total work, jump performance and power are enhanced similarly by moderate and high squat intensities. However, high-intensity workloads may prolong the duration of PAP. Therefore, athletes may use moderate- and high-intensity loads during warm-ups to improve jump performance and power.

© 2012 National Strength and Conditioning Association

 

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.