I was recently poolside with a professional swimming coach watching a group of young swimmers practice fly kick with boards.
On their front holding the board out in front with both hands gripping the side of the board.
Two groups of the ages 9 to 12 years of age performed multiple intervals of this drill with and without fins.
Now then ...some will say stop it will hurt the lower back etc.
Others have said. Where is the research evidence that supports the idea that fly kick on the front with a board held correctly as above causes any trouble at all.
As a point of interest I asked a number of the swimmers did they have any back pain after the efforts. Their answer was unanimous.
Anyone got any thoughts on this....