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Does endurance training improve red blood cell aging and hemorheology in moderate-trained healthy individuals?

Journal of Sport and Health Science 2020年第6期9卷 595-603页

作者： Daniel A.Bizjak Fabian Tomschi Gunnar Bales Elie Nader Marc Romana Philippe Connes Wilhelm Bloch marijke grau Department of Molecular and Cellular Sports Medicine German Sport University CologneCologne 50933Germany Laboratoire LIBM EA7424-Equipe“Biologie Vasculaire et du Globule Rouge” UniversitéClaude Bernard Lyon 1Villeurbanne 69100France Laboratoire d’Excellence du Globule Rouge GR-Ex Paris 75015France Universitédes Antilles InsermUnitéBiologie Intégrée du Globule RougeCHU de PointeàPitrePointe_a PitreGuadeloupe 97157France Institut Universitaire de France Paris 75231France The German Research Centre of Elite Sport German Sport University CologneCologne 50933Germany

Objective:To examine the impact of a 6-week endurance training on red blood cell(RBC)aging and deformability of healthy participants to detect possible improved hemorheological and performance-related ***:A total of 31 participants(17 females and 14 males)performed a 6-week moderate training protocol(three 1-h running sessions per week at 70%of maximal heart rate).Blood was sampled before and after the *** from each participant were fractioned according to density and age into 4 RBC *** were examined for changes of RBC properties,including aging distribution,RBC deformability,RBC microparticles,and phosphatidylserine *** and plasma nitrite levels were measured as indicators of nitric oxide ***:Aerobic performance,peak oxygen consumption,ventilatory thresholds,velocity at the aerobic-anaerobic threshold,and lactate at exhaustion improved after *** relative amount of both young RBCs and old RBCs increased,and the amount of the main RBC fraction *** externalization and RBC-derived microparticles *** deformability expressed as shear stress required to achieve half-maximum deformation to theoretical maximal elongation index at infinite shear stress improved in unfractioned RBCs(p<0.001).Nitrite decreased in total(p=0.001),young(p<0.001),main(p<0.001),and old(p=0.020)aged RBCs and in plasma(p=0.002),but not in very old ***:These results indicate that non-endurance-trained healthy participants benefit from a regular moderate running training program because performance-related parameters improve and a younger RBC population with improved RBC properties is induced,which might support oxygen supply in the microcirculation.

关键词： Cellular adaptation Hemorheology Nitric oxide Performance RBC physiology and aging

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