AUTHOR(S): Dr. Dalveer Singh Kaunteya

ABSTRACT:
The amount of oxygen that can be utilized at maximal work is called aerobic capacity or VO₂ max. and is determined by measuring the amount of oxygen assimilated per kg of body weight per minute. The average man breathes approximately 6 liters of air per minute, at rest, and may consume volumes of air in excess of 150 liters per minutes during a hard 5- or 6 mile run. When increasing running pace or workload there is a point at which lactic acid begins to accumulate. This is a crucial workload, as lactic acid can inhibit muscle contraction and energy production and cause pain and a burning sensation. The lactate threshold for most males is between 165 and 180 beats per minute, with females being slightly higher, at about 175 to 185 beats per minute. Relatively high-intensity, short rest period interval work has also been found to improve the lactate threshold. Cycles of 2-3 minutes of work with 1-2 minutes of rest have been found to reduce lactate accumulation during the lactate threshold is one of the more important measurements that will be obtained during testing of an endurance athlete. VO₂ max is the maximum capacity to transport and utilize oxygen during incremental exercise. It is also called maximal oxygen consumption or maximal oxygen uptake. It is also known as aerobic capacity, which reflects the physical fitness of a person exercise. The measurement of VO₂max is important, as in many athletic events a large amount of the energy needed to perform the exercise is produced through the use of oxygen. VO₂ max many factors must be considered by the coach and athlete.

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