Estimation of aerobic capacity ( VO2max) of adult male population of Turkey

Abstract

The aerobic capacity (AC or VO2max), also called physical work capacity, is an important parameter to determine the safe work energy expenditure norms to protect the workers. The energy expended during a task performance can be estimated by assuming that most of the energy is produced through aerobic metabolism which is determined by measuring the amount of oxygen consumed by the individual. If the overall workload is too high, aerobic metabolism may not be adequate to provide all the required energy. Then the worker generates the additional energy by anaerobic metabolism resulting lactic acid build up and eventually fatigue. In extreme cases, it may lead to cardiovascular and pulmonary health issues even fatalities. Aerobic capacities may vary among individuals and among populations due to heredity, nutrition, and exercise. Over several decades, a number of researchers have developed aerobic norms for a number of developed countries. However, such norms do not exist for the population of Turkey. This study is the first attempt to develop such baseline values for the male population of Turkey. This study is carried out to estimate the AC of the male population of Turkey and investigate the effects of some personal characteristics on AC. In the study, a modified submaximal cycle ergometer test, called Astrand-Myhre Bike Test, was used. The sample of the study included 260 healthy male volunteers (18 to 54 yrs.) having family origin from different regions of Turkey. Based on the statistical analysis results, the average AC is found to be 2.5 l/min (±0.3) and body weighted adjusted AC is found to be 33.2 ml/kg/min (± 7.7). The mean values of VO2max (in both l/min and in ml/kg/min) decreases by age and body weight groups. Through this study, a first is achieved, and the AC norms of the adult male population of Turkey are established between the ages of 18 and 54 years. These norms can serve as a ‘reference’ in the design for aerobic capacity for the male population of Turkey. The comparisons with the world populations are also made.