Energy systems pt2

Question 1

indirect calorimetry

Answer 1

provides accurate measure of energy expenditure through gas exchange
measures how much co2is produced and how much o2 is consumed at rest and during aerobic exercise
also enables us to find the main substrate being used (fat/carb) very reliable
gives precise calculation of vo2 and v02 max

Question 2

lactate sampling

Answer 2

used in endurance sports (swimming, rowing, running) to monitor training and predict performance
involves taking a tiny blood sample and a handheld device analyses the blood and indicates how much lactate is present
accurate and objective
can also be used to measure intensity of exercise: higher intensity at which lactate threshold occurs = the fitter the individual = can give idea of lvl of fitness
will allow performer to select relevant training zones
regular lactate testing provides a comparison for coach and performer to see improvements