Trabalho de Conclusão de Curso de Especialização
Efeitos da doação de sangue sobre a resposta hipóxica e o desempenho físico
Fecha
2013-03-28Autor
Lameira, Clarissa Rossatto
Institución
Resumen
Some people are afraid that blood donation can cause discomfort, dizziness or
weakness. This study aimed to verify the effects of donating 450 ml of blood over the
physical performance after 24 hours. The study group was composed of 9 male
student volunteers (22 +/- 3 years old, 74 +/- 18 kg). The procedures for collecting
data included: signing the informed consent and approval in the risk questionnaire;
first hypoxic test at rest, and after 15 minutes the first maximal exercise test (MET) on
a treadmill; three days later, the participants donated blood; hypoxic test and MET
were repeated 24 hours after donation. The results indicated that there was no
change in SpO2, CF, SBPH, and DBPH within the 15 minutes of hypoxia, comparing
the moments before and after the donation. During exercise, after donation, CF and
SSE were significantly higher only in the first speed stage, 9 km/h. The running
performance was significantly lower after the donation. We conclude that the removal
of 450 ml of blood does not change the variables BP and CF at rest, in normoxia and
in hypoxia, and in exercise, except for the speed of 9 km/h, and we did not observe
any malaise or discomfort to the study group.