準高地における短期間の競泳トレーニングが血液性状等の生理的応答に及ぼす影響

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The effect of short term training (5 days) at moderate altitude (1280m ', MA) on hematological and physiological changes were studied in eight elite competitive swimmers. Resting HR at MA was significantly higher than that at sea level (SL), and resting SpC_2 at MA was lower, but not significant. In the Dayl at MA, RBC count and hematocrit was decreased, but these variables were recovered in the Day4. On the other hand, blood hemoglobin concentration slightly decreased in the Day1 at MA, but significantly increased in the Day4 at MA, and sustained three days after returned to normobaric condition. Serum erythropoietin concentration was significantly increased at MA (42.8 ± 20.7% ; p<0.01). These results suggested that physiological and hematological change during training at 1280m altitude is similar to that at 2000m altitude or more, and training at 1280m might be improved blood oxygen transport capacity and aerobic performance in safety.
東海大学の論文