Estimate my max HR

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16 years ago 12/06/2007 10:41pm EST

40 yo male

Earlier this week, I had a cardiac stress test. Basically, I ended up going to the max that the machine and test would go to ... "Level 7" 20% grade and 6 mph. The doctor knew that I was in shape and we skipped to level 2. Long story short, it took ~15 min for me to get up to ~170 to 172, I still had "gas left in the tank" and was working hard, but didn't feel like I was maxed out. With this in mind, the max HR that I reached was ~172. Based on this info, what would you estimate my max HR to be? Seems like it might be [220 - age] plus a few beats. ... even if 220 - age were off by 4-5 beats, it would still be accurate within +/- 2%.

HPD

16 years ago 12/06/2007 10:55pm EST

re: HighPlainsDrifter

He thought you'd max out at 6 mph? Is that a typo? Or did you mean 6 min/mile?

Did your heart rate plateau at 172, or was it still rising? If it was still rising, then there's no way estimate where it would have stopped. Maybe 173. Maybe 200. 220-age is definitely off, and even revised formulas still have a standard deviation of about +/-10 beats. Only way to know is to measure it.

16 years ago 12/07/2007 12:26am EST

re: hold the phone

hold the phone wrote:
He thought you'd max out at 6 mph? Is that a typo? Or did you mean 6 min/mile?

What part of "20% grade" did you not understand?

16 years ago 12/07/2007 7:47am EST

re: Kevin52

This particular setup did not allow for fast running.

BP measurement at every stage change, roughly every 2-3 min, wearing a belt/harness where roughly 10 or so cables plugged into some type of unit, and the 10 cables were attached to electrodes taped onto various areas around my chest.

... for those of you who are deficient in math skills a 20% grade is huge, which was not lost on Kevin52. Running 100m in the horizontal direction would result in 20m of climbing.

16 years ago 12/07/2007 8:52am EST

re: HighPlainsDrifter

I had the same experience. I'm 42 in Ok shape. Used to be fast.

Doc said I reached max heart rate at 175 on a steep grade (grade doesnt matter). There was no way I was at max HR, cuz intuitively I could have kept that pace up for at least 10 mins. I spoke to Doc about it he said that its not a matter of fitness but maximum eletrical impulses that heart can generate is reduced as you age. He said its a "very accurate" estimate

16 years ago 12/07/2007 10:23am EST

re: hold the phone

Yes - it plateaued at 170 - 172, at the extent of the limitations of the testing setup. With this in mind, I'm guessing that the 220-age, in my case 40, which would be ~180 +/- 3 to 5(probably on the plus side) would be an accurate guestimation. I'll guess that my max is 182, midway between 180 to 185, which if incorrect would be an error of < 2%.

hold the phone wrote:
Did your heart rate plateau at 172, or was it still rising?

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