Is The Birth of a Star an implosion?

We know that a stars fusion is controlled by its fusion energy and
gravity's compression.(a balancing act) With millions of years of
compressing hydrogen to a smaller and smaller ball there comes that
spacetime when four hydrogen atoms fuse to make helium. I would think at
that instant an implosion has to take place. The explosion in a sense
can last a star"s life time. Bert