Muscle oxygen dynamics during cycling exercise in angina pectoris patients

Shun Takagi, Norio Murase, Ryotaro Kime, Masatsugu Niwayama, Takuya Osada, Toshihito Katsumura

研究成果: Conference contribution

抜粋

Muscle O2 dynamics during ramp cycling exercise were compared between angina pectoris patients (AP; n = 7, age: 73 ± 6 years) after coronary artery bypass grafting and age-, height-, and body weight-matched elderly control subjects (CON; n = 7, age: 74 ± 8 years). Muscle O2 saturation (SmO2) and relative change in deoxygenated (Δdeoxy-Hb) and total hemoglobin concentration (Δtotal-Hb) were measured continuously during exercise in the vastus lateralis (VL) by near infrared spatial resolved spectroscopy. Pulmonary O2 uptake (VO2) was also monitored throughout exercise to determine peak VO2. In AP, SmO2 was significantly higher, and Δdeoxy-Hb was significantly lower during exercise, compared to CON. In all subjects, ΔSmO2 (values at peak exercise minus values at resting) was negatively correlated to peak VO2 (r = −0.52, p < 0.05), and Δdeoxy-Hb at peak exercise tended to be negatively associated with peak VO2 (r = 0.48, p = 0.07). Blunted skeletal muscle deoxygenation response was observed in AP patients, which may be related to lower aerobic capacity in AP patients.

元の言語English
ホスト出版物のタイトルOxygen Transport to Tissue XXXVIII
出版者Springer New York LLC
ページ291-297
ページ数7
923
ISBN(印刷物)9783319388083
DOI
出版物ステータスPublished - 2016
イベント43rd Annual Meeting of the International Society on Oxygen Transport to Tissue, ISOTT 2015 - Wuhan, China
継続期間: 2015 7 112015 7 16

出版物シリーズ

名前Advances in Experimental Medicine and Biology
923
ISSN(印刷物)00652598
ISSN(電子版)22148019

Other

Other43rd Annual Meeting of the International Society on Oxygen Transport to Tissue, ISOTT 2015
China
Wuhan
期間15/7/1115/7/16

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)

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  • これを引用

    Takagi, S., Murase, N., Kime, R., Niwayama, M., Osada, T., & Katsumura, T. (2016). Muscle oxygen dynamics during cycling exercise in angina pectoris patients. : Oxygen Transport to Tissue XXXVIII (巻 923, pp. 291-297). (Advances in Experimental Medicine and Biology; 巻数 923). Springer New York LLC. https://doi.org/10.1007/978-3-319-38810-6_39