Lots of people ignore the symptoms or neglect to see a physician to catch problems early. Dunno if that's what happened here ...RIP in peace to the guy
Rip big fella...
My late brother died from a massive heart attack in his sleep at age 38
From his mobile phone's search history I found out he searched
Heart attack symptoms
Angina pectoris
Heaviness on chest...
Tragically he developed these symptoms two weeks prior his demise.
He visited a cardiologist and under gone effort test which was ok
Later I discussed with her doctor, she said he had elevated blood levels and slightly elevated BP
She said it is not possible to realize clogging without angiogram if it is not over 70 percent
There are definitely signs but they develop suddenly and for a massive powerlifter it wouldn't take too long for some kind of blood clot resulting a massive heart attack, as high intensity exercise is a big risk if arteries are clogged.
P.S: Arythmia is a very serious sign. Both of my parents died shortly after developing arythmia.