Rosencrans, Adam2016-10-212016-10-212016-08https://hdl.handle.net/1794/2036460 pages. A thesis presented to the Department of Human Physiology and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Summer 2016.This paper attempts to answer four fundamental questions: what are the causes of muscle fatigue during steady state exercise, how is pH related to muscle fatigue, what technologies exist to measure pH during exercise, and what future steps must be taken to make use of this connection. This paper examines muscle fatigue as a whole, as well as the role pH plays in predicting the onset of muscle fatigue in exercising muscle. Current literature on the physiological and temporal links of pH to lactate threshold and muscle fatigue are examined. This paper makes the assertion that while acidosis may not cause fatigue or even be exactly temporally correlated with muscular fatigue, there is a strong enough correlation between the two for pH measurement to have potential use in preventing muscle fatigue and subject dropout during steady state exercise. Finally, there is a review of current technology and methods for measuring pH in vivo in order to determine the most efficient and practical way forward for pH measurement to be used in this manner.en-USCreative Commons BY-NC-ND 4.0-USHuman physiologyMuscle fatiguepHSteady stateExerciseThresholdNIRSAcidosisThesis / Dissertation