Time course for the recovery of physical performance, blood hemoglobin, and ferritin content after blood donation
2015
Background It is widely accepted that
blood donationnegatively affects endurance performance, but data on physical recovery after a standard
blood donationare scarce. This study aimed to elucidate the temporary impact of
blood donationon endurance performance, measured as peak oxygen uptake (VO2peak) and
time trial(TT) performance. Study Design and Methods VO2peak, TT performance, blood, iron, and anthropometric variables were determined before (
baseline) and 3, 7, 14, and 28 days after
blood donationin 19 healthy men. Results VO2peak was reduced by 6.5% from 49.7 ± 2 mL/kg/min at
baselineto 46.3 ± 2 mL/kg/min on Day 3 (p < 0.001), and TT performance was reduced by 5.2% from 13:31 ± 00:42 to 14:13 ± 00:50 min:sec (p < 0.001). Both VO2peak and TT performance were back to
baseline14 days after
blood donation. Blood hemoglobin (Hb) concentration declined 7.9% from 9.3 ± 0.11 mmol/L at
baselineto 8.6 ± 0.1 mmol/L on Day 3 (p < 0.001) and was not different from
baseline28 days after
blood donation. The hematocrit (Hct) was reduced from 43.8 ± 0.5% at
baselineto 40.6 ± 0.6% on Day 3 (p < 0.001). On Day 28 Hct was 42.8 ± 0.5% and still reduced below
baseline(p = 0.028). Ferritin concentration was reduced 46% from 113 ± 23 μg/L at
baselineto a minimum of 61 ± 14 μg/L on Day 14 (p = 0.008). Conclusion The individual recovery was variable, but physical performance was recovered 14 days after a standard
blood donation, despite blood Hb concentration remaining lower than at
baseline.
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