Pre workout vasodilators

[Wapadaigo]

My understanding is:

Resistance training causes your body to send out a signal(not trying to get to in depth here) that reduces blood flow (vasoconstriction) to non working muscles, and simultaneously promotes blood flow (vasodilates) to the targeted muscle group being worked in order to supply the muscle with more blood for work being performed.

My confusion:

Why are preworkout supps that promote full body vasodilation so highly thought of if they are only working against what your body is trying to promote?

Let me know if i need to explain my point further due to poor wording. Thanks for feedback

[PinchTheBear]

Why are preworkout supps that promote full body vasodilation

Nitrates/BCAA Nitrates: C-Bol, ICE Plus, Bullrush Recelerator, VPX Powershock... in no particular order.

[steelleD]

Nitrates/BCAA Nitrates: C-Bol, ICE Plus, Bullrush Recelerator, VPX Powershock... in no particular order.

He asked why, not what.


As to OP: dunno the real reason, but my broscience degree tells me that even with supplements that promote "full body vasodialation", your body is smart enough to not send more blood to your calves when you're doing skullcrushers.

[Wapadaigo]

He asked why, not what.

Thanks ha. He must've double dosed on his pre work out supp today and got a little to antsy to read the full sentence before he answered.

[Wapadaigo]

He asked why, not what.


As to OP: dunno the real reason, but my broscience degree tells me that even with supplements that promote "full body vasodialation", your body is smart enough to not send more blood to your calves when you're doing skullcrushers.

I don't think it sends more to your calves( for this particular example), but it will just send less to your tris....In theory

[Blitz n destroy]

My understanding is:

Resistance training causes your body to send out a signal(not trying to get to in depth here) that reduces blood flow (vasoconstriction) to non working muscles, and simultaneously promotes blood flow (vasodilates) to the targeted muscle group being worked in order to supply the muscle with more blood for work being performed.

My confusion:

Why are preworkout supps that promote full body vasodilation so highly thought of if they are only working against what your body is trying to promote?

Let me know if i need to explain my point further due to poor wording. Thanks for feedback

Working out a specific muscles group decreases blood flow to others?

There is a response that sends more blood to target muscle groups, but I do not think that it decreases bloodflow elsewhere other than digestion slowing down.

That being said...the effects of a pre workout/no supplement would not entirely override your bodys response to exercise. If a supplement enhances full body blood flow, then you will still have the response of an increase in blood flow to the target area...

[ryanr623]

Working out a specific muscles group descreases blood flow to others?

This. Never heard of that.

[Gym God]

... interesting.

[Blitz n destroy]

The cardiac output is increased, of course, via sympathetic nerves that increase the heart rate and increase the stroke volume. Also, the stroke volume potentially can increase via the Frank-Starling mechanism. This is because contracting skeletal muscles tend to squeeze blood in their veins back to the central veins via muscle pumping. The elevated pressure in the central veins then in some circumstances can increase the end diastolic volume and thus the stroke volume.

At the same time as skeletal muscle arterioles dilate, arterioles to certain other areas help compensate by constricting. The primary organs for this sympathetic vasoconstriction are the gut, skin and inactive skeletal muscles.

The gut usually can get by with less blood flow because most of the blood flowing to the digestive system is for absorbing food molecules rather than for keeping the organs alive. However, in long-term, endurance exercise, digestion and absorption at some point starts taking place again.

Likewise, blood flow to the skin is not primarily for keeping the skin alive and thus can be reduced, at least for a short while. But reductions in blood flow to the skin are likely to be transient because it is imperative that enough blood flow through the skin to give off the extra heat generated in exercise.

In the end, in a healthy person the mean arterial pressure stays constant. because the increased flow of blood through exercising muscles is compensated for remarkably well by an increased cardiac output and adjustments to arterioles.

http://courses.washington.edu/conj/heart/exercise.htm






Again...I do not think that taking a pre workout product would negate this effect, the body would still be responding the same, just with a greater overall blood flow. Also, even though certain muscles may be inactive by our terms..they still receive secondary stimulation through compound exercise.

[steelleD]

Working out a specific muscles group decreases blood flow to others?

There is a response that sends more blood to target muscle groups, but I do not think that it decreases bloodflow elsewhere other than digestion slowing down.

That being said...the effects of a pre workout/no supplement would not entirely override your bodys response to exercise. If a supplement enhances full body blood flow, then you will still have the response of an increase in blood flow to the target area...

thanks blitz, this is what i was trying to say

[bigla2004]

Good stuff blitz.

[BubbaDoc]

This. Never heard of that.

Your body has about 6 liters of blood. If it ramps up blood flow to an area(exercised muscle), it's got to slow it down somewhere else.
Just a basic regulatory response.

[TMac26]

Your body has about 6 liters of blood. If it ramps up blood flow to an area(exercised muscle), it's got to slow it down somewhere else.
Just a basic regulatory response.

You make it sound like if i work out my arms and chest too much i won't be able to walk out of the gym due to the "pump" in my upper body.

[Wapadaigo]

http://courses.washington.edu/conj/heart/exercise.htm






Again...I do not think that taking a pre workout product would negate this effect, the body would still be responding the same, just with a greater overall blood flow. Also, even though certain muscles may be inactive by our terms..they still receive secondary stimulation through compound exercise.

But by contributing to overall blood flow, it would take away from working muscle's blood flow

[Wapadaigo]

You make it sound like if i work out my arms and chest too much i won't be able to walk out of the gym due to the "pump" in my upper body.

It does not shut off blood flow completely to other muscles, just reduces.

[PinchTheBear]

He asked why, not what.

Thanks ha. He must've double dosed on his pre work out supp today and got a little to antsy to read the full sentence before he answered.

LOL guilty. 1,3 dimeth.