Blood donation and effect on fitness

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Discussion Overview

The discussion revolves around the effects of blood donation on fitness levels, particularly focusing on how the reduction of red blood cells impacts oxygen-carrying capacity and subsequent physical performance. Participants explore the implications of blood donation for training and athletic performance.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant notes a personal experience of decreased fitness levels following blood donation, raising questions about the overall impact on fitness and oxygen capacity during training.
  • Another participant explains that donating blood reduces the number of red blood cells, which carry oxygen, and discusses how this reduction is gradually restored over time.
  • There is mention of blood doping among competitive athletes, where transfusions are used to increase red blood cell counts temporarily, suggesting a potential link between blood donation and performance enhancement.
  • A later post humorously suggests using the blood of children for doping, but raises concerns about blood-type mismatches as a possible issue.

Areas of Agreement / Disagreement

Participants express varying views on the implications of blood donation for fitness, with some focusing on personal experiences and others discussing broader concepts related to blood doping. The discussion remains unresolved regarding the specific effects of blood donation on fitness levels.

Contextual Notes

Participants do not fully explore the physiological mechanisms behind the recovery of red blood cells or the long-term effects of blood donation on athletic performance. There is also a lack of consensus on the benefits or drawbacks of training post-donation.

Who May Find This Useful

Individuals interested in the physiological effects of blood donation, athletes considering the implications for training, and those curious about blood doping practices may find this discussion relevant.

cpscdave
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A couple weeks ago I gave blood.
Obviously for the week afterwards I found an difference in my fitness. I tired more easily and couldn't push as hard during fitness classes.

This got me wondering how donating blood affects your fitness level.

If you train after a donation would this prompt an increase in your oxygen carrying capacity over and above that if you had simply trained?
 
Biology news on Phys.org
Obviously, by donating a pint of whole blood, you have removed a certain amount of the red blood cells from your body, which carry oxygen from the lungs to your muscles. This reduction in the oxygen-carrying ability of your bloodstream gradually returns as your body replaces what was donated.

Certain competitive athletes have been suspected in the past of 'blood doping', wherein these individuals will receive a transfusion of blood to temporarily increase the amount of red blood cells, with the theory being that the extra red corpuscles will allow their blood to carry more oxygen while they are competing. Unlike using performance-enhancing drugs, it was once difficult to detect if an athlete was 'blood doping', but now several tests have been developed.

http://en.wikipedia.org/wiki/Blood_doping
 
Even better, take the blood of your children for doping!

http://news.sciencemag.org/biology/2014/05/young-blood-renews-old-mice
 

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