Dietary Nitrate Does Not Induce Hypoxia Dependent Augmented Oxygen Delivery in Skeletal Muscle in Young Healthy Subjects
نویسندگان
چکیده
DIETARY NITRATE DOES NOT INDUCE HYPOXIA DEPENDENT AUGMENTED OXYGEN DELIVERY IN SKELETAL MUSCLE IN YOUNG HEALTHY SUBJECTS. Rachel Bentley, Stuart R Gray, Christian Schwarzbauer, Dana Dawson, Michael P Frenneaux, and Jiabao He Aberdeen Biomedical Imaging Centre, University of Aberdeen, Aberdeen, Aberdeenshire, United Kingdom, Musculoskeletal Research Programme, University of Aberdeen, Aberdeen, Aberdeenshire, United Kingdom, Cardiovascular Research Programme, University of Aberdeen, Aberdeen, Aberdeenshire, United Kingdom
منابع مشابه
Dietary nitrate reduces skeletal muscle oxygenation response to physical exercise: a quantitative muscle functional MRI study
Dietary inorganic nitrate supplementation (probably via conversion to nitrite) increases skeletal muscle metabolic efficiency. In addition, it may also cause hypoxia-dependent vasodilation and this has the potential to augment oxygen delivery to exercising skeletal muscle. However, direct evidence for the latter with spatial localization to exercising muscle groups does not exist. We employed q...
متن کاملErythrocyte and the regulation of human skeletal muscle blood flow and oxygen delivery: role of circulating ATP.
Blood flow to contracting skeletal muscle is tightly coupled to the oxygenation state of hemoglobin. To investigate if ATP could be a signal by which the erythrocyte contributes to the regulation of skeletal muscle blood flow and oxygen (O2) delivery, we measured circulating ATP in 8 young subjects during incremental one-legged knee-extensor exercise under conditions of normoxia, hypoxia, hyper...
متن کاملMuscle oxygenation profiles between active and inactive muscles with nitrate supplementation under hypoxic exercise
Whether dietary nitrate supplementation improves exercise performance or not is still controversial. While redistribution of sufficient oxygen from inactive to active muscles is essential for optimal exercise performance, no study investigated the effects of nitrate supplementation on muscle oxygenation profiles between active and inactive muscles. Nine healthy males performed 25 min of submaxi...
متن کاملDietary nitrate improves muscle but not cerebral oxygenation status during exercise in hypoxia.
Exercise tolerance is impaired in hypoxia, and it has recently been shown that dietary nitrate supplementation can reduce the oxygen (O(2)) cost of muscle contractions. Therefore, we investigated the effect of dietary nitrate supplementation on arterial, muscle, and cerebral oxygenation status, symptoms of acute mountain sickness (AMS), and exercise tolerance at simulated 5,000 m altitude. Fift...
متن کاملAcute Dietary Nitrate Supplementation Decreases Systolic Blood Pressure and Increases Dry Static Apnea Performance in Females
Collofello BS, Moskalik B, Essick EE. Acute Dietary Nitrate Supplementation Decreases Systolic Blood Pressure and Increases Dry Static Apnea Performance in Females. JEPonline 2014;17(4):1526. Recently, dietary inorganic nitrate has been explored as a sports nutrition supplement, and has been shown to enhance exercise performance by reducing metabolic oxygen cost and lowering blood pressure. The...
متن کامل