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Muscle Glycogenolysis And Resynthesis In Response To A Half Ironman Triathlon: A Case Study, Trevor L. Gullum, Charles Dumke, Brent Ruby
Muscle Glycogenolysis And Resynthesis In Response To A Half Ironman Triathlon: A Case Study, Trevor L. Gullum, Charles Dumke, Brent Ruby
Integrative Physiology and Athletic Training Faculty Publications
Purpose : To describe the degrees of muscle-glycogen depletion and resynthesis in response to a half Ironman triathlon. Methods: One male subject (38 years of age) completed the Grand Columbian half Ironman triathlon ( 1.9-km swim, 90-km bike, 21.1-km run, Coulee City, Wash). Three muscle biopsies were obtained from his right vastus lateralis (prerace, immediately postrace, and 4 hours postrace). Prerace and postrace body weight were recorded, in addition to macronutrient consumption before, during, and after the race. Energy expenditure and whole-body substrate oxidation were estimated from linear regression established from laboratory trials (watts and run pace relative to VO(2) …
Blood Leukocyte Mrna Expression For Il-10, Il-1ra, And Il-8, But Not Il-6, Increases After Exercise, David Nieman, Dru Henson, J. Mark Davis, Charles Dumke, Alan C. Utter, E. Angela Murphy, Steven Pearce, Greg Gojanovich, Steven R. Mcanulty, Lisa S. Mcanulty
Blood Leukocyte Mrna Expression For Il-10, Il-1ra, And Il-8, But Not Il-6, Increases After Exercise, David Nieman, Dru Henson, J. Mark Davis, Charles Dumke, Alan C. Utter, E. Angela Murphy, Steven Pearce, Greg Gojanovich, Steven R. Mcanulty, Lisa S. Mcanulty
Integrative Physiology and Athletic Training Faculty Publications
The primary purpose of this project was to study exercise-induced leukocyte cytokine mRNA expression. Changes in plasma cytokine levels and blood leukocyte mRNA expression for interleukin-6 (IL-6), IL-8, IL- 10, and IL-1 receptor antagonist (IL-1Ra) were measured in 12 athletes following 2 h of intensive cycling (64% Wattsmax) while ingesting a carbohydrate or placebo beverage (randomized and double blinded). Blood samples were collected 30 min preexercise and immediately and 1 h postexercise. Carbohydate compared with placebo ingestion attenuated exercise-induced changes in plasma cortisol (8.8% vs. 62%, respectively), epinephrine (–9.2% vs. 138%), IL-6 (10-fold vs. 40-fold), IL-10 (8.9-fold vs. …