<Originals>Hematological Responses in Juveniles after Training at Moderate Altitude

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• OHNO, H., KIMU, Chang K., KIM Jin H., JUNG Yong S., BAE Sang Y., TOSHINAI, K., MIYAZAKI, H., ESAKI, K., TAKEMASA, T., KINUGASA, T., KIZAKI, T., HITOMI, Y., OOKAWARA, T., OH-ISHI S. and HAGA, S., Hematological Responses in Juveniles after Training at Moderate Altitude. Abv. Exerc. Sports Physiol., Vol.10, No.2 pp.31-35, 2004. The aim of the current study was to investigate the effects of moderate-altitude training on hematological parameters including erythropoietin (EPO) and 2,3-diphos-phoglycerate (2.3-DPG) in juveniles. Eight young male and three female skiers, aged 9-19 years, participated in this experiment. The training protocol consisted of 4-5-h skiing, 6 times/week, for 5 weeks, at an elevation of 2,700 m or of 3.500 m (for the last 3 days) in summer. Living quarters were at 2,100 m for 2 weeks and at 2,700 m for the following 3 weeks, respectively. Their blood samples were collected at sea level 3-4 days before and after the training. As anticipated, there were significant (P<0.05) increases in red blood cell count, hemoglobin (Hb), and hemotocrit after moderate-altitude training. Also, blood 2,3-DPG concentration rose significantly (P<0.05) after training indicating a shift of the Hb dissociation curve to the right, whereas serum EPO level showed a significant(P<0.05) decrease. The decrease in EPO level inversely P<0.05) correlated with the change in 2,3-DPG concentration after training. The results obtained suggest that moderate-altitude training has benefical effects on hematolofical parameters in juveniles, probably improving red cell oxygen transport.

• 日本運動生理学会の論文

著者

• 武政 徹

  Institute Of Health And Sport Sciences University Of Tsukuba

• OHNO Hideki

  Department of Molecular Predictive Medicine and Sport Science, Kyorin University, School of Medicine

• KIZAKI Takako

  Department of Molecular Predictive Medicine and Sport Science, Kyorin University, School of Medicine

• TAKEMASA Tohru

  Institute of Health and Sport Sciences, University of Tsukuba

• HAGA Shukoh

  Institute of Health and Sport Sciences, University of Tsukuba

• OH-ISHI SHUJI

  Fifth Department of Internal Medicine, Tokyo Medical University

• KIZAKI Takako

  Kyorin University

• HAGA Shukoh

  Nihonbashigakkan University

• OHNO Hideki

  Kyorin University

• Hitomi Yoshiaki

  Department Of Molecular Predictive Medicine And Sport Science Kyorin University School Of Medicine

• Hitomi Yoshiaki

  Department Of Environmental And Preventive Medicine Graduate School Of Medical Science Kanazawa Univ

• Bae Sang

  Institute Of Health And Sport Sciences University Of Tsukuba

• Haga Shukoh

  Institute Of Health & Sports Sciences University Of Tsukuba

• Ohishi Shuji

  Fifth Department Of Internal Medicine Tokyo Medical University

• Toshinai Koji

  Institute Of Health And Sport Sciences University Of Tsukuba

• Takemasa Tohru

  Institute Of Health & Sports Sciences University Of Tsukuba

• MIYAZAKI Hiromi

  Institute of Health and Sport Sciences, University of Tsukuba

• ESAKI Kazuki

  Institute of Health and Sport Sciences, University of Tsukuba

• OOKAWARA Tomomi

  Department of Biochemistry, Hyogo University of Medicine

• Ohno Hideki

  Department Of Hygiene National Defense Medical College

• KIM Jin

  Research Institute of Basic Science, Changwon National University

• Kinugasa Takashi

  Institute of Health and Sport Sciences, University of Tsukuba

• KIM Chang

  Research Institute of Physical Education & Sport Science, Korean National University of Physical Edu

• JUNG Yong

  Research Institute of Physical Education & Sport Science, Korean National University of Physical Edu

• Haga Shukoh

  Institute Of Health An Sport Sciences University Of Tsukuba

• Kim Jin

  Research Institute Of Basic Science Changwon National University

• Oh-ishi Shuji

  Kasumigaura Hospital Tokyo Medical University

• Oh-ishi Shuji

  Fifth Department Of Internal Medicine Tokyo Medical University

• Esaki Kazuki

  Institute Of Health And Sport Sciences University Of Tsukuba

• Kinugasa Takashi

  Kyorin University

• Kinugasa Takashi

  Third Department Of Internal Medicine Kyorin University School Of Medicine

• Miyazaki Hiromi

  Institute Of Health And Sport Sciences University Of Tsukuba

• Ookawara Tomomi

  Department Of Biochemistry Hyogo University Of Medicine

• Takahashi Kazuto

  Third Department Of Internal Medicine Kyorin University School Of Medicine

• Kinugasa Takashi

  Institute Of Health And Sport Sciences University Of Tsukuba

• Kim Jin

  Research Center For Proteineous Materials Chosun University

• Ohno Hideki

  Department Of Gastroenterology Graduate School Of Medicine University Of Tokyo

• Kinugasa Takashi

  College Of Medical Technology And Nursing University Of Tsukuba

• Jung Yong

  Research Institute Of Physical Education & Sport Science Korean National University Of Physical

• Kizaki Takako

  Department Of Molecular Predictive Medicine And Sport Science Kyorin University School Of Medicine

• Ookawara Tomomi

  Department Of Biochemistry Hyogo College Of Medicine

• Kim Chang

  Research Institute Of Physical Education & Sport Science Korean National University Of Physical

• Hitomi Yoshiaki

  Department Of Environmental And Preventive Medicine Faculty Of Medicine Institute Of Medical Pharmaceutical And Health Sciences Kanazawa University

• KIM Cang

  Research Institute of Physical Education & Sport Science, Korean National University of Physical Education

• Kizaki Takao

  Department of Molecular Predictive Medicine, Kyorin University, School of Medicine

• OHNO Hideki

  Department of Gastroenterology and Cancer Gene Regulation, Kanazawa University Graduate School of Medical Sciences

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