Effect Of Blood Donation On Blood Donor Cardiorespiratory Fitness Level

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dc.contributor.authorMail, Jamaludin
dc.date.accessioned2018-05-24T02:12:33Z
dc.date.available2018-05-24T02:12:33Z
dc.date.issued2017
dc.description.abstractBackground. Blood donation is vital to meet patients’ needs for blood and blood products. However, reduction of haemoglobin, haematocrit and blood volume following blood donation might affect the cardiorespiratory fitness level. The aim of this study is to determine the effect of blood donation on the level of cardiorespiratory fitness as measured by predicted maximum oxygen uptake (VO2 max). Methods. A total of 42 male blood donors were involved in this cross sectional study with 14 participants each for poor, average and excellent fitness groups. The 20 meters Multistage Shuttle Run fitness test protocol was used to measure cardiorespiratory fitness level. The test was performed 24 hours before and after a 450 ml whole blood donation. Simultaneously, haemoglobin and haematocrit were assessed 24 hours before, immediately after and 24 hours after the donation. Results. The median baseline pre-donation predicted VO2 max were 33.30 (30.73, 35.50), 38.85 (36.80, 42.65) and 50.80 (50.20, 52.60) ml/kg/min for poor, average and excellent fitness groups, respectively. The cardiorespiratory fitness level were slightly reduced at 24 hours after blood donation by 0.61%, 1.29% and 3.43% in the for poor, average and excellent fitness groups, respectively. However, the reduction was only statistically significant in the excellent fitness group (p = 0.017). The haemoglobin and haematocrit significantly reduced for all groups at 24 hours after donation. The haemoglobin was reduced by 7.63% (p < 0.001), 7.82% (p < 0.001) and 5.46% (p < 0.001) for poor, average and excellent fitness groups, respectively. The haematocrit was reduced by 8.40% (p < 0.001), 9.08% (p < 0.001) and 7.21% (p = 0.002) for for poor, average and excellent fitness groups, respectively. The Spearman correlation analysis revealed no significant relationship between haemoglobin changes and predicted VO2 max changes in all groups, poor fitness level group (rs = 0.001), average fitness level (rs = 0.639) and excellent fitness level group (rs = 0.532). Conclusion. The cardiorespiratory fitness level was slightly reduced at 24 hours following a 450 ml whole blood donation, which was concomitant with significant haemoglobin and haematocrit reduction. However, there was no significant relationship between the changes in haemoglobin and cardiorespiratory fitness after blood donation.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/5581
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectBlood donation, Cardiorespiratory fitnessen_US
dc.subjectVO2 max, Haemoglobin, Haematocriten_US
dc.titleEffect Of Blood Donation On Blood Donor Cardiorespiratory Fitness Levelen_US
dc.typeThesisen_US
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