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La spectroscopie dans le proche infrarouge : ses champs d'application dans les sciences du sport| old_uid | 4678 |
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| title | La spectroscopie dans le proche infrarouge : ses champs d'application dans les sciences du sport |
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| start_date | 2008/04/24 |
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| schedule | 10h30 |
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| online | no |
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| summary | For decades, researchers have contributed with new ways of applying physics’ principles to exercise physiology. Recently, application of optical techniques in biology, medicine and physiology became an important field. Moreover, researchers were involved in developing new, non-invasive instrumentation for sport sciences applications. Optical methods can contribute to exercise physiology by offering the possibility of rapid, low-resolution, functional images and real-time devices for tissue investigation. Near-infrared spectroscopy (NIRS) is a useful technique for the investigation of biological tissues because of the relatively low absorption of water and high absorption of oxy- and deoxy- haemoglobin in the near-infrared region of 750-900 nm. Due to these properties, the near-infrared light can penetrate biological tissues in the range of 0.5-2 cm, offering investigation possibility of deep tissues and differentiate among healthy versus diseased, trained versus untrained tissues. The theoretical and technological advances of the past 10 to 15 years have opened the door to a range of applications in the sport sciences, including some that involve imaging of the adult brain during challenging exercise, which for many years had been inaccessible to NIRS. This talk examines perturbations’ methods for measuring blood flow and muscular metabolism within resting and exercising conditions in humans. Protocols for reliable measurements of blood flow and muscle oxygen consumption are presented, while the advantages and pitfalls of these and other methods are discussed. Actual applications in the field of sport sciences are outlined. |
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| responsibles | Marin |
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