In thinking about using accessory exercises to train either or both power and speed, I thought of this article by Brett Contreras
. He has looked at many studies on "power" training, asking what is the the best loading for this. He concludes that it is different for each lift, and different for each person, and that you have to figure it out for yourself.
One quote: "The best load is most likely specific to the individual and could have much to do with the individual’s “weak link.” For example, if they’re weak but pretty elastic perhaps you should try to get them strong, and if they’re strong but not explosive, perhaps you should focus on power and reactive strength."
And another: "Finally, variety and periodization are important considerations in program design. With the many types of plyometrics, ballistics, sprint drills, towing drills, explosive lifts, and heavy lifts, there’s no reason to stick with solely one load (as a percentage of 1RM) indefinitely."
Here's my question. Is part of the explanation for the wide variety of findings in all of the studies do to confusion between speed and power? In other words, do some of these studies really look at speed lifting and call it power?