I need to make sure the sources are credible. Maybe reference JAA (Japanese Athletics Association) or similar organizations. But since this is an article, perhaps avoid specific citations unless necessary.
Including tips for parents or coaches on how to support these athletes would add value. Maybe a section on the importance of nutrition, rest, and academic performance alongside training. japanese amateur teen -18 19-
Avoid any sensitive topics like overtraining or exploitation, unless it's to address the challenges. Keep the focus positive but realistic. Also, considering the age range, highlight the developmental aspect—skills they're building now for later in life. I need to make sure the sources are credible