Muscle Oxygenation Heterogeneity in a Single at Rest and During Bicycle Exercise

• KIME RYOTARO

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• OSADA TAKUYA

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• SHIROISHI KIYOSHI

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• ICHIMURA SHIRO

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• KUROSAWA YUKO

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• HOMMA TOSHIYUKI

  Japan Institute of Sports Sciences

• NAKAGAWA NAOKI

  Department of Preventive Medicine and Public Health, Tokyo Medical University St. Cecilia Woman's College

• MIYAZAKI JUNICHI

  Aoyama Gakuin University

• MURASE NORIO

  Department of Preventive Medicine and Public Health, Tokyo Medical University

• KATSUMURA TOSHIHITO

  Department of Preventive Medicine and Public Health, Tokyo Medical University

書誌事項

タイトル別名

• MUSCLE OXYGENATION HETEROGENEITY IN A SINGLE MUSCLE AT REST AND DURING BICYCLE EXERCISE

抄録

We evaluated regional differences of muscle O₂ dynamics between distal and proximal sites in the vastus lateralis (VL) muscle using near infrared spatial resolved spectroscopy (NIR_SRS). forty-one male subjects performed a 30 W ramp incremental bicycle exercise test until exhaustion. The NIR_SRS probes were attached on each distal and proximal site in the VL. The pulmonary O₂ uptake and heart rate were monitored continuously during the experiment. The TOI at rest was significantly higher in proximal than distal sites (65.0±5.2 vs. 69.7±4.6%, p<0.001). The TOI at exhaustion was also significantly higher in proximal than distal sites (39.5±6.7 vs. 47.5±7.6%, p<0.001). Moreover, a significant correlation was found between VO₂max and the TOI at exhaustion in each proximal and distal site in the VL. Half time reoxygenation, the time to reach a value of half-maximal recovery, was significantly slower in distal sites than proximal sites (27.1±5.6 vs. 25.0±6.1 sec, p<0.01). In conclusion, lower muscle oxygenation at exhaustion in higher VO₂max may be due to enhanced O₂ extraction in high oxidative capacity muscle. In addition, slower reoxygenation and lower muscle deoxygenation at the distal site in the VL may be explained by differences in O₂ supply and/or muscle fiber composition between distal and proximal sites.

収録刊行物

• 体力科学

  体力科学 55 (Supplement), S19-S22, 2006

  一般社団法人日本体力医学会

キーワード

• hemodynamics
• muscle O₂ consumption
• muscle perfusion
• NIRS

詳細情報

• CRID: 1390282679898302592
• NII論文ID: 110004821436
• NII書誌ID: AN00137986
• DOI: 10.7600/jspfsm.55.s19
• ISSN: 18814751
• ISSN: 0039906X
• NDL書誌ID: 8545102
• Web Site: http://id.ndl.go.jp/bib/8545102
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8545102
• Web Site: https://www.jstage.jst.go.jp/article/jspfsm/55/Supplement/55_S19/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可