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Donating Blood

Old 06-24-19, 10:09 AM
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koolerb
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Donating Blood

Just complete my first race after a long hiatus. I wasn't expecting to place very high in the ranking but under-performed even my low expectations. I donated blood the the Wednesday before a Saturday race, I thought a few days to recover from that would be fine. Could that have been a factor?
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Old 06-24-19, 10:18 AM
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I would say yes.
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Old 06-24-19, 10:27 AM
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From a quick Google search:
After donation, your body goes to work regenerating the lost blood. Your plasma recovers the quickest, in about 24 hours (9). The Red Cross recommends no strenuous exercise during this period until your “fluid” or plasma normalizes (9). Platelets restore next, within a 72-hour period (13). The oxygen carriers or RBCs – unfortunately for athletes – are the slowest to regenerate, taking four to six weeks to fully rebound (9).

The lag in RBC recovery is an obvious indicator that an athlete’s endurance performance will suffer until pre-donation levels are restored. Several studies have reported significant drops in performance measures from 24 hours to two days post-donation in active young adults, including VO2 max, work rate (4,5,6,7), and time to exhaustion (5). Dellweg et al. reported a 9% decrease in VO2max, and a 13% drop in maximal work rate following a 500-ml whole blood donation (6).
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Old 06-24-19, 10:45 AM
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I do not like to give up a test tube of blood for a test.
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Old 06-24-19, 11:00 AM
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Originally Posted by koolerb View Post
Just complete my first race after a long hiatus. I wasn't expecting to place very high in the ranking but under-performed even my low expectations. I donated blood the the Wednesday before a Saturday race, I thought a few days to recover from that would be fine. Could that have been a factor?
Does your Red Cross have facilities to draw platelets? I used to donate platelets in my racing days, every 2 weeks, and felt no ill effects at all (except a little dizziness after the donating from the sodium citrate used to keep the blood form clotting. Clears in an hour or two. In fact, I came off my first donation, rode straight to our club race (15-20 miles), won it and rode 20 miles home. The next summer I raced in elite condition, still donating every two weeks. By contrast, donating whole blood really knocks me out and I feel it on the bike at least a week (as a non-racer; I knew from my two whole blood donations before racing I had no business donating whole blood as a racer.

Ben
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Old 06-24-19, 01:47 PM
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Weeks to fully recover. About 3 months. I've given over 2 gallons until they stopped taking mine (grew up in Africa and they kept going further back in time).
Giving blood and racing don't go together.
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Old 06-24-19, 02:59 PM
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Wow, 4-6 weeks. That was probably a contributing factor.
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Old 06-24-19, 06:09 PM
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Originally Posted by Hermes View Post
I do not like to give up a test tube of blood for a test.
Most tests are about 6 tubes.
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Old 06-25-19, 11:39 AM
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Originally Posted by koolerb View Post
Just complete my first race after a long hiatus. I wasn't expecting to place very high in the ranking but under-performed even my low expectations. I donated blood the the Wednesday before a Saturday race, I thought a few days to recover from that would be fine. Could that have been a factor?
This is called anti-autologous-doping. You remove RBCs just before a race to reduce performance for weeks. Very rarely performed at the World Tour level.
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