Answered Ostarine/MK677 Reduced Max HR

jim2509

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Ok so on Week 4 of Ostarine 20mg /MK677 10 mg and enjoying thus far APART from since ive been on them my Max HR threshold seems to have lowered from 174-76 to 168-170?? Now before id hit 174 and still have a little left over...now i hit 170 and am done?? Now the only other thing i can think that would be another factor was that early April i got hit with a bad bout of Tonsilitis that landed me 24 hours in hospital on a drip as it was infected..surely cant be that?

So thoughts?? I was under impression Osta helped endurance...anyone else had similar and should i be concerned??
 

jim2509

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But are you performing less when taking osta?
It might help with oxygen delivery somehow and hr might be lower because of that.
Yes my performance with Cardio was alot worse and id hit my maximum VO2 at 169-170 bpm and couldnt continue...which set alarm bells ringing. I tried numerous times and still got the same result. This was over last 2 weeks (week 3-4 of Osta/Mk677) so i decided To do a little test....i stopped taking the supplements on Saturday and this morning i hit 176bpm and my stamina was back and went for at least 1:30 min longer....which is HUGE.

I was quite relieved today to see my old VO2 HR level back which pushing myself.

So what on earth was going on?? Be hell i know??
 

jim2509

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Update:

On waking up this morning, walking downstairs seeing family etc i took my BP and it was 106/70....which surprised me as Ostarine/MK677 is supposed to slightly elevate BP. Am taking Arm1care Pro/Fish Oil as well...so its not BP.

Going to play about with my Garmin HR Strap to see if its that playing up?
 

jim2509

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Update:

Ok so I stopped taking Osta/MK677 on Saturday and today did a bleep test and low and behold my Max Heart Rate was 176...BACK to what it used to be and i could run harder/longer as well??

So what can we deduce from this as Ostarine is 'Supposed' to increase performance/endurance could it be due to how Osta effects the body or the MK677??

I felt strong today and definately more stamina. Be interesting to see if anyone has tested there HR before cycle/after cycle on this stuff to see if they have the same as ive not read about these effects before.

I might now leave it a month and maybe just use good old fashioned Halodrol or Hexadrone with 4-AD??
 

bosskardo

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But are you performing less when taking osta?
It might help with oxygen delivery somehow and hr might be lower because of that.
 

bosskardo

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That's strange as ostarine should increase endurance. But maybe not at high effort (anaerobic)
 

jim2509

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That's strange as ostarine should increase endurance. But maybe not at high effort (anaerobic)
Yeah possibly that. Yesterday i had a fitness test and ran over 170 bpm again without an issue......to be honest felt fitter than for a long time and am on nothing. I seem to have recovered libido quickly as well so dont think Ostarine is very suppressive. Might try a decent natty product next...any tips??
 

bosskardo

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Yeah possibly that. Yesterday i had a fitness test and ran over 170 bpm again without an issue......to be honest felt fitter than for a long time and am on nothing. I seem to have recovered libido quickly as well so dont think Ostarine is very suppressive. Might try a decent natty product next...any tips??
Depend on what goals you have
 

jim2509

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Yohimbe or alpha y are always good choices.
Sup3r-Shred is pretty good but not sure if available anymore.
Yohimbe or alpha y are always good choices.
Sup3r-Shred is pretty good but not sure if available anymore.
Hmmm never heard of Artemesia Iwayomogi Extract in the Super 3 r shred...i can get it but its not cheap.

I have some 1dhea/4 dhea kicking around somewhere but generally people think its not great although pretty sides free.
 

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