Just no. Visual perceptual abilities do not significantly decline in the 30s or 40s. Reaction speed does not declinesignificantly either in those ages. Experience can more than make up for neuro-muscular changes into the 50s. Case in point: Richard Petty, the stock car driver. Finally, you can advance abilities until you become senile or physically incapable. People don’t stop learning. There are some brain changes of grey to white matter with age but that does not mean someone only “can” as in maybe retain or advance abilities.
Physical changes like sarcopenia, tendon’s losing flexibility, vertebral disc shrinkage, longer recovery times, etc. well, now you are talking.