Det här låter verkligen som en episod av den yttre gränsen (1995) versionen, "I zonen."
Från Wikipedia-beskrivningen:
With its deadly lasers and hand-to-hand battles, 'The Octal' is a combat sport for a new generation of athletes — but Tanner Brooks is no longer a young man. Although he's promised his wife Jessica that this will be his final tournament, Tanner is desperate to go out a winner. Dr. Michael Chen has a way to make that happen. Through an experimental treatment that taps the power of the human nervous system, Chen accelerates Tanner's reflexes and perceptions. To Tanner, everything in the Octal begins to move in slow motion ... and Tanner quickly becomes unbeatable. However, there are side effects: Jessica notices that Tanner is tired, haggard and his hair is going gray.
och
A cured but aged Tanner and Jessica look at the "explanation" Dr. Chen left to them - his driver's license, which shows that he should have been only thirty years old. They realize he had tested the procedure on himself, causing his body to speed up and age faster.
Slå på de flesta punkter som du nämnde, idrottaren, slow motionen, de åldrande biverkningarna, den asiatiska läkaren (spelad av Pat Morita) och uppenbarelsen i slutet att doktorn verkligen inte var gammal, testade han behandling på sig själv först.
Den moraliska lektionen, eller åtminstone den avslutande berättelsen var:
For the human race life is a ceaseless competition for power, for fame, even love. But when the desire for victory is reduced to winning at any cost, then we can only guarantee our defeat.