Jump to content

Blood donation


Recommended Posts

I would just like to know, how does donating blood affect other riders, I donated on Wednesday night and went to Kyalami yesterday for the first time this year and I was useless (I did a 30K mtb ride over the weekend and I was OK), can it be the blood donation that affected me or is it just being away from the road bike for 5 months.

Link to comment
Share on other sites

I would just like to know, how does donating blood affect other riders, I donated on Wednesday night and went to Kyalami yesterday for the first time this year and I was useless (I did a 30K mtb ride over the weekend and I was OK), can it be the blood donation that affected me or is it just being away from the road bike for 5 months.

 

It will affect you - I believe it takes 24 to 48 hours to replenish and recover from it. I always feel a bit pap for a couple of days after - so it probally was a combination of both affecting you.

Link to comment
Share on other sites

I am not a medic but read a up a while back.

Your volume is replenished in 24-48 hours of the donation. However the red blod cells take much longer. If you were up to where you were in such a short time why would they only allow you to donate blood 56 days later. because some of the cells take that long to replenish.

Link to comment
Share on other sites

yep , you feel it bad,

i cannot believe that 500mls is so NB.

 

weird thing is that it is not consistent for me, sometimes i feel way worse and others not so bad,

but i deff feel it each time.

 

just out of interests sake, what was your iron level, mine is normally between 16 and 17

Link to comment
Share on other sites

reason it takes a while for you to recover, is red blood cells are removed, and a while bunch more is pumped back into your blood system from bone marrow afterwards, these cells still need to mature before they are 100% functional at carrying oxygen. thats why your performance will be down a few days after donation

Link to comment
Share on other sites

curtsy of wikipedia

 

"In the process of red blood cell maturation, a cell undergoes a series of differentiations. The following stages 1–7 of development all occur within the bone marrow:

1.hemocytoblast a pluripotent hematopoietic stem cell

2.Common myeloid progenitor multipotent stem cell

3.unipotent stem cell

4.pronormoblast also commonly called proerythroblast or rubriblast.

5.basophilic normoblast/early normoblast also commonly called erythroblast

6.polychromatophilic normoblast/intermediate normoblast

7.orthochromatic normoblast/late normoblast - Nucleus is Expelled before becoming a reticulocyte

8.reticulocyte

 

The cell is released from the bone marrow after stage 7, and so of circulating red blood cells there are ~1% reticulocytes. After 1–2 days these ultimately become "erythrocytes" or mature red blood cells."

Link to comment
Share on other sites

Most obviouse reason would be:

Less red blood cells means less haemotonin, thus less oxygen capacity in the blood, so your muscles don't get full supply of oxygen...

The avg guy has 7 litres, majority of it is your torso

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

My Profile My Forum Content My Followed Content Forum Settings Ad Messages My Ads My Favourites My Saved Alerts My Pay Deals Settings Help Logout