Foundations First Athletics The Speed Window: Les années critiques qui façonnent le potentiel athlétique Paperback

The fastest kid on the field at twelve is rarely the fastest at eighteen. It is not bad luck. It is timing, and almost no one is watching the clock that matters.Most young athletes are trained straight through the windows that matter. A window to wire movement patterns. A window to adapt through growth. A window to build force. Each one closes. The next one opens on top of whatever was built, or wasn't.It opens early, long before the trophies and travel teams, and it closes whether you are paying attention or not. Inside it, the nervous system learns how to move. Miss it, and you spend the next decade buying back what could have been built for free. The sequence is biological. It does not wait. The Speed Window maps all three.The Three Windows of athletic development: - The Neural Window (ages 7 to 12): when the nervous system absorbs movement with an efficiency it will never have again.- The Stabilization Window (ages 12 to 15): when puberty reorganizes the body and mechanics matter more than intensity.- The Force Window (ages 15 to 18): when the foundation turns into real strength and speed.Inside, you will learn: - Why it is about how a child learns to move, not how hard they train.- How to train around your child's biological clock, not the calendar.- Why early specialization is a head start that does not last.- The biology of injury during the growth spurt, and how to protect your athlete.- How to evaluate any program or training environment in three questions.Backed by long-term athletic development research and built on the author's own path, The Speed Window is the playbook for the years between seven and eighteen. It is written for parents, in plain language, with no hype and jargon.Every copy unlocks free access to a companion platform: drill libraries and video demonstrations