KIN 3306 Lecture Notes - Lecture 2: Indirect Calorimetry, Exercise Physiology, Food Energy
29 Jan 2017
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Document Summary
A person exercises in a metabolic chamber surrounded by pipes pumped with specific amounts of water. As the person exercises and releases heat, the water is heated and calories are measured by the change in the temperature of the water. Indirect calorimetry: best suited for exercise physiology, measures oxygen and carbon dioxide production, aerobic energy systems use oxygen and produce carbon dioxide, measuring vo2 and vco2. Difference is the amount of oxygen that is consumed vs the amount of oxygen. Noncalorimetric techniques that stays in the body: less accurate but more accessible. Pedometers count steps by detecting hip motion take 10,000 steps per day to maintain good health cheapest options. Duration, frequency and intensity of physical activity. More expensive and require software to analyze the date commonly used in research settings. Heart rate monitors strong direct correlation between heart rate and vo2. Most require a chest strap and a wrist watch calorie output might not be entirely accurate for everyone.
