Chapter title |
Muscle Oxygen Dynamics During Cycling Exercise in Angina Pectoris Patients.
|
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Chapter number | 39 |
Book title |
Oxygen Transport to Tissue XXXVIII
|
Published in |
Advances in experimental medicine and biology, January 2016
|
DOI | 10.1007/978-3-319-38810-6_39 |
Pubmed ID | |
Book ISBNs |
978-3-31-938808-3, 978-3-31-938810-6
|
Authors |
Shun Takagi, Norio Murase, Ryotaro Kime, Masatsugu Niwayama, Takuya Osada, Toshihito Katsumura |
Editors |
Qingming Luo, Lin Z. Li, David K. Harrison, Hua Shi, Duane F. Bruley |
Abstract |
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 (∆deoxy-Hb) and total hemoglobin concentration (∆total-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 ∆deoxy-Hb was significantly lower during exercise, compared to CON. In all subjects, ∆SmO2 (values at peak exercise minus values at resting) was negatively correlated to peak VO2 (r = -0.52, p < 0.05), and ∆deoxy-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. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 49 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 3 | 6% |
Student > Bachelor | 3 | 6% |
Other | 2 | 4% |
Student > Doctoral Student | 1 | 2% |
Student > Master | 1 | 2% |
Other | 1 | 2% |
Unknown | 38 | 78% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 4 | 8% |
Neuroscience | 2 | 4% |
Sports and Recreations | 2 | 4% |
Psychology | 1 | 2% |
Materials Science | 1 | 2% |
Other | 1 | 2% |
Unknown | 38 | 78% |