Erk and p38 Phosphorylation Following Three Different Maximal Velocity Squat Protocols

The purpose of this study was to determine the effect of low, moderate, and high intensity exercise protocols as are commonly used by athletes on the phosphorylation of ERK1/2 and p38 MAPKinases. Nine recreationally trained males (21.4 + or - 1.67 yrs, 92.23 + or - 9.72 kg), completed each of three...

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Published in:Medicine and science in sports and exercise 2012-05, Vol.44 (5S), p.347-347
Main Authors: Kudrna, Rebecca, Moodie, Nicole, Prewitt, Michael, Fry, Andrew, Gallagher, Phillip
Format: Article
Language:English
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Summary:The purpose of this study was to determine the effect of low, moderate, and high intensity exercise protocols as are commonly used by athletes on the phosphorylation of ERK1/2 and p38 MAPKinases. Nine recreationally trained males (21.4 + or - 1.67 yrs, 92.23 + or - 9.72 kg), completed each of three speed squat (emphasizing speed of the concentric phase) protocols in randomized order and on non-consecutive days. The three testing protocols consisted of a low relative intensity (LI; 5 sets of 10 repetitions at 30% 1RM); moderate intensity (MI; 5 sets of 5 repetitions at 70% 1RM); and high Intensity (HI; 5 sets of 3 repetitions at 90% 1RM. For ERK1/2, there was a significant main effect for time(F sub((1,8)) = 6.86, p =0.031). Ratio of phosphorylated to total ERK1/2 increased by 33%, 56%, and 43% for the HI, MI, and LI respectively but was not significantly different between protocols (F sub((2,16)) = 0.186, p>0.05).
ISSN:0195-9131