Maximum Volume of Oxygen Capacity (Vo2Max). Maximum oxygen volume capacity as a measure of aerobic capacity has been established as the international standard of physical capacity. Maximal oxygen capacity is defined as the maximum amount of oxygen that the organism consumes per unit of time while doing the exercise intensity grows, and that can not be improved with further increase in exercise intensity (Ranković, et al, 2010).
Silva, et al (2008) states that aerobic capacity (VO2max) is a metabolic parameters intended to measure individual maximal oxygen uptake, and this is an important performance indicator. The term maximal aerobic capacity equal to the maximal oxygen uptake, maximal aerobic power or maximal oxygen consumption VO2max. Aerobic endurance, maximal aerobic capacity and maximal oxygen uptake are all terms used interchangeably with VO2max (Wilmore, 2011).
Uliyandari (2009) says that "VO2max is the maximum amount of oxygen that can be consumed during intense physical activity until exhaustion occurred. Because VO2max can limit a person's cardiovascular capacity, VO2max is considered as the best indicator of aerobic endurance ".
Maximum oxygen uptake (VO2max): The body’s capacity to transport and use oxygen during a maximum exertion involving dynamic contraction of large muscle groups, such as during running or cycling. Also known as maximal aerobic power and cardiorespiratory endurance capacity (Larsen, 2010).
Guyton & Hall (2008) says VO2max is the oxygen consumption rate in maximum aerobic metabolism. Maximal aerobic capacity can also be used as an indicator of a person's physical fitness. Furthermore, VO2max can also be interpreted as a maximum of one's ability to consume oxygen during physical activity.
Shephard (2008), defines VO2max as:
Maximum oxygen consumption (also called maximum oxygen uptake, maximum aerobic power, aerobic capacity, functional aerobic capacity, or simply VO2max) is considered as a measure of cardiorespiratory fitness criterion. This is the highest level at which oxygen can be consumed during exercise or the maximum rate at which oxygen can be taken in, distributed, and used by the body during physical activity. "V" in VO2max is the volume used per minute (appears above the V to indicate "per unit time"). VO2max is usually expressed in relative (uptake relative to body weight) this as a measure of milliliters of oxygen consumed per kilogram of body weight per minute (ml O 2 / kg / min or ml / kg / min). Important factors that affect maximal oxygen consumption in healthy adults is age, sex, heredity, body composition, and mode of exercise training situation. In addition, a number of diseases such as heart disease, chronic obstructive pulmonary disease, diabetes, and cancer-related bone diseases (such as osteoporosis) can markedly interfere with maximal aerobic capacity.
Uliyandari (2009), describes some of the factors that can affect the value of VO2max were age, sex, temperature, and condition training. Maximum Volume of Oxygen (VO2max) can also be referred to as the Maximum Aerobic Capacity (MAC) due equally to increase endurance athletes. To determine the increase in endurance trained athletes before and after training can be measured through Volume Oxygen Maximum (VO2max).