Blood Glucose and Lactate Kinetics during an Incremental Running Test in Endurance Runners

• Nakamura Kazuteru

  Department of Food Sciences, College of Life Sciences, Ibaraki Christian University

• Sengoku Yasuo

  Faculty of Health and Sport Sciences, University of Tsukuba

• Ogata Hitomi

  Faculty of Health and Sport Sciences, University of Tsukuba

• Watanabe Koichi

  Faculty of Health and Sport Sciences, University of Tsukuba

• Shirai Yusuke

  Doctoral Program in Physical Education, Health and Sports Sciences, University of Tsukuba

• Nabekura Yoshiharu

  Faculty of Health and Sport Sciences, University of Tsukuba

抄録

Aim: We examined the difference in blood glucose and lactate kinetics between highly and moderately trained runners during an incremental running test, and to examine the relationship between GT and LT in different training states. Methods: Eight highly trained (25.9±5.6 years, 167.6±5.2 cm, 57.5±6.0 kg) and eight moderately trained (23.8±3.7 years, 173.6±3.8 cm, 62.4±4.6 kg) male runners performed the incremental running test. Each stage of the test consisted of running for 4 min on a treadmill. The velocity was increased by 0.6 km·h⁻¹·stage⁻¹ until exhaustion. Blood glucose and lactate were measured after each stage, and GT and LT were determined using the log-log method. Results: During the incremental running test, blood lactate increased significantly in both groups, whereas blood glucose increased significantly only in highly trained runners. In highly trained runners, LT and GT did not differ significantly (15.2±1.0 and 15.7±1.3 km·h⁻¹, respectively; p=0.08), but were significantly correlated (r=0.906, p<0.01). In moderately trained runners, however, LT was significantly lower than GT (12.1±0.8 and 13.7±1.6 km·h⁻¹, respectively; p=0.02), and no significant correlation was observed between LT and GT (r=0.596, p=0.16). Conclusions: The relationship between blood glucose and lactate kinetics differs according to training state, so that the relationship of blood glucose and lactate kinetics and appearance pattern of GT reflects a different exercise capacity than that of LT.<br>

収録刊行物

• Ｉｎｔ．　Ｊ．　Ｓｐｏｒｔ　Ｈｅａｌｔｈ　Ｓｃｉ．

  Ｉｎｔ．　Ｊ．　Ｓｐｏｒｔ　Ｈｅａｌｔｈ　Ｓｃｉ． 14 (0), 11-20, 2016

  一般社団法人 日本体育・スポーツ・健康学会

キーワード

• Glucose threshold
• lactate threshold
• endurance capacity

詳細情報

• CRID: 1390001205286885376
• NII論文ID: 130006899989
• DOI: 10.5432/ijshs.201517
• ISSN: 18804012
• ISSN: 13481509
• Web Site: https://www.jstage.jst.go.jp/article/ijshs/14/0/14_201517/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可