Echinocytosis in athletes with exercise-induced hypoxemia.

Abnormal hemorheology has been proposed previously as a possible genesis of exercise-induced hypoxemia (EIH) in humans. This study, in support of the hemorheological hypothesis, aims at determining if red blood cell shape changes might be related to EIH. Three groups of subjects: one without EIH (n=5); one developing mild-EIH (n=7); and, one with moderate EIH (n=5).

Sampling time after tourniquet removal affects erythrocyte deformability and aggregation measurements.

Venipuncture procedures are widely thought to influence biochemical, hematological or hemorheological measurements. In line with the preparation of the new Guidelines for the standardization of hemorheological measurement, we compared various blood rheological parameters (i.e.

Hemorheology and heart rate variability: is there a relationship?

The aim of the present study was to test the relationships between hemorheology and autonomic nervous system (ANS) activity in 23 sickle cell trait (SCT) carriers and 17 control subjects. Hemorheological parameters were assessed at rest. Nocturnal ANS activity was calculated from heart rate variability indices.