Changes in Serum Haptoglobin Concentration by Treadmill-running and Ergometer-cycling

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概要

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• TSUKANAKA, A, UMEMURA, Y, ISHIKO, T, and MATUI, N, Changes in Serum Haptoglobin Concentration by Treadmill-running and Ergometer-cycling. Adv. Exerc. Sports Physiol, Vol.6, No.1 pp.1-6, 2000. The purpose of this study was to investigate 1) whether footstrike impacts induce hemolysis, and 2) whether runner's erythricytes are more fragile than those of sedentary subjects. Eight female distance runners and 8 sedentary subjects performed treadmill-running and ergometer-cycring of simillar exercise intensity for 20 minutes. Mcan heart rate, as an index of exercise intensity, was adjusted for both groups in each exercise. Blood samples were drawn just before, immediately after (within 1 minute) and 1 hour after excrcise, and hematological parameters (while blood cell count (WBC), red blood cell count (RBC), hemoglobin concentration (Hb). hematocrit (Ht), mean corpuscular volume (MCV), platclct count (PLT)) and serum haptoglobin concentration (Hp) were measured. WBC, RBC, Hb, Ht and PLT increased immediately after exercise, but they returned to the initial values 1 hour later. The resting level of Hp in runners was significantly lower than that in seduntary subjects (p<0.05). Hp ingreased significantly immediately after ergometer-cycling in both groups (p<0.05), and it decreased significantly below the initial level 1 hour after treadmill-running (p<0.05) in both groups, whereas it returned to the initial level 1 hour after ergometer-cycling in both groups. Since WBC, RBC, Hb, Ht and PLT increased immediately after exercise decreased signigicantly in both groups (p<0.05). When Hp was corrected by plasma volume change, the apparent increase in Hp immediately after exercise was not observed any more. Although Hp of runners was lower than that of sedentary subjects, changes in Hp by eiercise were quite similar in the two groups. From these results, it may be concluded that 1) footstrike impacts seem to cause intravascular hemolysis, and 2) the fragility of runner's erythrocytes does nto seem to be increased.

• 日本運動生理学会の論文

著者

• Tsukanaka Atsuko

  Laboratory for Exercise Physiology and Biomechanics,Faculty of Physical Education,Cukyo University

• Tsukanaka Atsuko

  Laboratory For Exercise Physiology And Biomechanics Faculty Of Physical Education Cukyo University

関連論文

• Changes in Serum Haptoglobin Concentration by Treadmill-running and Ergometer-cycling
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