頸髄損傷者の常酸素・低酸素環境下における軽運動時の脳内酸素動態

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  • CEREBRAL OXYGENATION OF CERVICAL SPINAL CORD INJURED INDIVIDUALS DURING LIGHT EXERCISE UNDER NORMOXIA AND HYPOXIA

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The purpose of this study was to examine cerebral oxygenation in individuals with cervical spinal cord injury (SCI) during light exercise under normoxia and hypoxia. We used near-infrared spectroscopy to measure changes in oxyhemoglobin (oxyHb), deoxyhemoglobin (deoxyHb), and total hemoglobin (totalHb). In both the SCI and Control groups, deoxyHb increased during exercise under normoxia and hypoxia relative to rest. OxyHb slightly increased during exercise in the Control group. However, oxyHb decreased during exercise under hypoxia in the SCI group. These results might come from the decreased oxygen delivering capacity in individuals with SCI which was likely to result from the autonomic nervous system dysfunction and decreased skeletal muscle pump activity, possibly due to disuse atrophy.

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