Endüstri Mühendisliği

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Browsing Endüstri Mühendisliği by Subject "Aerobic exercises."

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    Determining the aerobic capacity (VO2max) of adult female population of Turkey
    (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.) Boz Kaya, Büşra Didem; Ekşioğlu, Mahmut.
    Aerobic capacity (AC) data of workforce are needed for ergonomic design of the physically demanding jobs in industry to establish safe and productive work designs. Workforce performance and production output depend on sustaining the effort over a period of time that depends on AC and type of tasks. In addition, excessive cardiovascular load may put the individuals in the risks of cardiovascular diseases such as coronary heart disease. AC data are also needed to form baselines for treatment of patients and also for sports to determine the fitness levels. There are a number of studies performed around the world related to the AC of the various populations. These studies shows that AC varies among some world populations and within the sub groups of a given population due to the differences in genetics, lifestyle, nutrition, geographical region, fitness level, gender and age. Therefore, it is a need to develop AC norms for the population of Turkey. Therefore, the objectives of the study are (i) estimating the aerobic capacity of healthy (normal) adult female population of Turkey, (ii) examining the effects of age, BMI and job-group on AC and (iii) comparing the AC data of the female population of Turkey with the AC data of female population of other countries. A sample of 256 healthy adult female volunteers aged between 18 and 54 with family roots from all seven regions of Turkey participated in the study. A modified submaximal cycle ergometer test, called Astrand - Myhre Bike Test, was used to collect AC data from the participants. Based on the statistical analysis results, mean and std of AC was found as 2 ± 0.2 l/min and 32.3 ± 7.8 ml/kg/min. The mean values of VO2max are decreasing from 18-24 years group to 45-54 years group and from under-weight group to obese group. In contrary, regular exercise had significant positive effect on AC. The established norms can serve as baseline in industrial work design and also clinical and sports settings. The results were compared with other world populations.
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    Estimation of aerobic capacity ( VO2max) of adult male population of Turkey
    (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.) Yılmaz, Altuğ.; Ekşioğlu, Mahmut.
    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.