Maximal O2 Uptake
Maximal oxygen uptake measures cardio-respiratory fitness, which is the ability of an individual to exercise continuously for an extended period of time with out fatigue. Oxygen is highly important as it is required for the production of cellular energy (ATP). (Marieb, 2001, p. 29). ATP stores, and releases chemical energy for the body's cells. (Marieb, 2001, p. 1182). Each cell consumes oxygen and converts food energy to usable ATP for cellular work. During exercise muscle cells require more ATP which in turn indicates they will also use more oxygen. When assessing individuals VO2max, exercise is undertaken using the large muscle groups, and by measuring oxygen uptake whilst increasing the work intensity, we are able to observe a plateau value which indicates VO2max. A: The historical development of methodologies used to assess VO2max.The study of exercise physiology has evolved over the years and advances made have always followed those made in the study of basic physiology. (Massengale & Swanson, 1997, p. 367). The structure and function of the human body has been a fascinating thing that has been studied for centuries, even dating back to the ancient Greek days. However, it wasn'
The respiratory exchange ratio (R. Maximal testing involves the subject exercising to the point of volitional fatigue. The test was conducted by Antoine Laurent Lavoisier, who was the very first person to conduct experiments on human respiration. Sub maximal testing is the more commonly used method due to risks involved and expensive equipment required when doing maximal testing. O2 uptake is representative of the hearts ability to deliver O2 to the working muscles and the muscles ability to use the energy. Philadelphia: Lippincott Williams & Wilkins.
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