User Manual

Joule 3.0 User Guide page 46
Chapter 13: Definition of Terms
VO2 Max 1. The maximal amount of oxygen that a person can consume and process measured
in liters of oxygen per minute (absolute) or in milliliters of oxygen per minute per kilogram of
body weight (normalized to body weight). 2. The upper limit of aerobic metabolism. 3. A strong
predictor of endurance performance in a mixed population of individuals. 4. An exercise intensity
corresponding with the maximal power output a person can hold between 2 to 8 minutes.
Lactate Threshold
1. An exercise intensity where the production of lactate or appearance of lactate in the blood
exceeds the removal or disappearance of lactate from the blood. 2. An exercise intensity charac-
terized by a sudden increase in breathing rate or ventilation. 3. An exercise intensity where indi-
viduals begin to feel a burning sensation in working muscle. 4. An exercise intensity considered to
be hard. 5. An exercise intensity that can be held for a prolonged period of time ranging from 40
minutes to 2 hours. 6. Amongst athletes with similar VO2 max values the power at lactate thresh-
old is the strongest predictor of performance.
Lactate Threshold Break Point
1. The power output or exercise intensity where blood lactate just begins to increase above its
resting baseline. 2. An exercise intensity characterized as somewhat hard. 3. The upper end of
the endurance training zone and the bottom end of the lactate threshold zone. 4. An exercise
intensity that can be held for 1 to 3 hours or as long as there is available stored carbohydrate or
glycogen.
Lactate Threshold > 1mM
1. The power output or exercise intensity where the blood lactate is equal to 1 mM above its
resting baseline. 2. An exercise intensity characterized as hard. 3. The mid point of the lactate
threshold training zone. 4. An exercise intensity that can be held for 1 to 2 hours.
Lactate Threshold 4 mM
1. The power output or exercise intensity at a blood lactate level of 4 mM or 2 to 3 mM above
baseline. 2. An exercise intensity characterized as very hard. 3. The upper limit of the lactate
threshold zone. 4. An exercise intensity that can be held for 30 minutes to 1 hour.