Isometric transfer to dynamic movement?

[speedster12]

@Race_Radio

Soviet research, dating back to the sixties of the 20th century, points out that isometric training coming before dynamic work may increase its effectiveness by up to 20%. This is called the “immediate after effect” of isometric training. When the reverse sequence of training was tested (dynamic work preceding isometric work), results actually deteriorated. According to Mel Siff’s “Supertraining”, the after effect occurs immediately after the preliminary isometric tension. Strength continues to increase and peaks between the 10th to 20th minute. To maximize the strength boost, I recommend performing isometric holds 15-17 minutes before the hardest sets of dynamic work.

For this variant to be effective, the isometric tension should be held for two to three seconds and then replaced by dynamic work of an explosive nature using a relatively low weight.

Could anyone please just confirm for me the below statement:

Can someone please confirm if this quote is true???..

Look up post activation potentiation