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Bowing Down to the Kettlebell and PNF Change of Heart?

Ever have one of those days when what you though was right was wrong? I have lots of them lately.
Cases in point:
#1: A study in the Journal of Strength and Conditioninng found PNF stretching ineffective for inproving vertical and mobility in quadricep muscles( below )
#2: A study in the Journal of Strength and Conditioning found kettlebells to be effective to improve strength and power.( below 2 )
I dislike kettlebells and use PNF stretching, daily.
Good science, I am told, involves creating a hypothesis and then trying to disprove said hypothesis. Looks like I’ve just disproven my hypothesis that kettlebells don’t work and PNF is as effective or more so than other muscle activation facilitations( dynamic stretch, foam rolling etc.).
Keep in mind that no study is perfect, for example PNF of the quadriceps may not be the best way to elicit and increase in vertical jump. However, these studies offer enough evidence to at least get me thinking about a change.


source: https://journals.lww.com/nsca-jscr/Abstract/2013/02000/Effects_of_a_Short_Proprioceptive_Neuromuscular.24.aspx



author: ryanbooth