Why the study?
Does physical training increase the amount of hemoglobin and blood volume?
Population
Athletically trained men and women, a subgroup of 4 individuals undergoing a skiing tour, and 1 patient…
Comparison
Physical training (or prolonged bed rest). vs An average group of the respective sexes…
Design
Cohort
Authors
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Observational links between training and higher hemoglobin are hypothesis-generating; RCTs needed before any practice change.
Does physical training increase the amount of hemoglobin and blood volume?
Physical training is associated with significant increases in total hemoglobin and blood volume, whereas prolonged inactivity leads to a decrease.
Kjellberg et al. (1949) studied this question.
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