Relationship between Indicators Measured by 31P-magnetic Resonance Spectroscopy and Near-infrared Spectroscopy after Decreased Muscle and Vessel Function

• Nirengi Shinsuke

  Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan

• Kurihara Toshiyuki

  Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan

• Fujioka Masako

  Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan

• Saiki Takeshi

  Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan

• Hamaoka Takafumi

  Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan

Bibliographic Information

Other Title

• 筋血管機能低下時における近赤外線分光法と磁気共鳴分光法の評価指標の関連

Abstract

The purpose of this study was to compare indicators of oxidative capacity obtained from 31P-magnetic resonance spectroscopy (31P-MRS) and near-infrared spectroscopy (NIRS) following a 21-day upper-limb cast immobilization. Eight healthy men (19.5±0.9 years, mean±SD) participated in this study. For all subjects, the non-dominant arm was immobilized for 3 weeks with a cast (IMM) and the dominant arm was measured as control (CON). We measured the following parameters for participants pre- and post-immobilization: forearm cross-sectional area (CSA) and maximal voluntary contraction (MVC) of the grip. The oxidative capacity was evaluated by the time constant for the recovery of muscle oxygen consumption (TcVo2mus) determined by NIRS and the time constant of PCr (TcPCr) by 31P-MRS. There was no significant change in forearm CSA. MVC, TcVo2mus, and TcPCr were significantly decreased 26.5%, 25.9% and 32.2%, respectively, post-immobilization. A positive correlation was found between pre- and post-immobilization in TcVo2mus and TcPCr. The TcVo2mus and TcPCr were decreased during the 3-week immobilization, and there was a positive correlation between TcVo2mus and TcPCr both pre- and post-immobilization. The result of this study indicates that NIRS determined oxidative capacity is useful in a clinical setup where muscle and vascular functions are compromised.

Journal

• The Journal of Japanese College of Angiology

  The Journal of Japanese College of Angiology 53 (January), 1-7, 2013

  Japanese College of Angiology

Keywords

• near-infrared spectroscopy
• 31-phosphorus magnetic resonance spectroscopy
• muscle oxygen consumption
• muscle oxidative capacity
• cast immobilization

Details

• CRID: 1390001204900430080
• NII Article ID: 130003378866
• DOI: 10.7133/jca.53.1
• ISSN: 18808840
• ISSN: 03871126
• Web Site: https://search.jamas.or.jp/link/ui/2013132587
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed