International Journal of Occupational Hygiene 2017. 9(4):.

EstimatingAerobic Capacity (VO2-max) using a Single-stage Step Test and Determining its Effective Factors
Sattar Hosseini, Mohammad Reza Ghotbi Ravandi, narges khanjani


Background and objectives: Maximal Aerobic Capacity (VO2-max) is an indicator for the preparedness of the cardiovascular and respiratory systems and a tool to estimate the physiological fitness of individuals for their work. This study aimed to measure the VO2-max and Physical Work Capacity (PWC) of workers at a metal industry and the factors affecting it using a single-stage step test.
Materials and Methods: This cross-sectional study was conducted on 60 workers in a metal industry in Tehran. Data collection tools was a questionnaire including separate sections asking about demographic and anthropometric (height, weight and BMI) characteristics. Quantitative variables were recorded after being measured. The Tuxworth and Shahnawaz method and step test were used in order to estimate VO2-max and PWC. Data were analyzed using SPSS 22.
Findings: The relative humidity of the place was 40% and local air pressure was 879 atmospheres. The average VO2-maxand average maximum PWC of the study population were 3.13±0.283L/min and 15.65±1.41 kcal/min, respectively. There was a significant relationship between VO2-maxusing single-stage step test and BMI (P=0.01), number of hours of exercise per week (P=0.009) and age (P=0.01).
Conclusion: The step test is a rapid, easy and low-cost method to estimate physiological adaptation and PWC of individuals. Variables such asage, hours of exercise per week and BMI are effective on aerobic capacity.


VO2-max, physical work capacity, step test

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Mououdi MA, Choobineh AR. Ergonomics in practice: selected ergonomics topics. Nashr-e-Markaz, Tehran, iran, 1999. pp 81-94.

(1)..Motallebi Kashani M, Lahmi M, Khavanin A. Evaluation of physical work capacity at Iranian workers. ICE07 Kuala Lumpur. 2007:42-7.

Grandjean E, Kroemer KH. Fitting the task to the human: a textbook of occupational ergonomics: CRC press; 1997.

Balderrama C, Ibarra G, De La Riva J, Lopez S. Evaluation of three methodologies to estimate the VO 2max in people of different ages. Applied ergonomics. 2010;42(1):162-8.

Nogueira FdS, Pompeu FAMS. Maximal workload prediction models in the clinical cardio-pulmonary effort test. Arquivos brasileiros de cardiologia. 2006;87(2):137-45.

Magrani P, Pompeu FAMS. Equations for predicting aerobic power (VO2) of young Brazilian adults. Arquivos brasileiros de cardiologia. 2010;94(6):763-70.

Daneshmandi H, Fard AR, Choobineh A. Estimation of aerobic capacity and determination of its associated factors among male workers of industrial sector of Iran. International Journal of Occupational Safety and Ergonomics. 2013;19(4):667-73

Ramos SB, de Aguiar PF, Lopes AC, Barreto G, Rodrigues AVS, Pereira HMG, et al. Effects of caffeine (3 mg) on maximal oxygen consumption, plasmatic lactate and reaction time after maximum effort.(Efectos de la utilización de 3 mg de cafeína sobre los niveles de potencia aeróbica máxima, de lactato plasmático y del tiempo de reacción simple, ambos después de la realización de esfuerzo máximo). RICYDE Revista Internacional de Ciencias del Deporte doi: 105232/ricyde. 2006;2(5):42-52.

Southard TL, Pugh JW. Effect of hydration state on heart rate-based estimates of VO2-max. Professionalization of Exercise Physiology. 2004;7(1).

Chatterjee P, Banerjee AK, Das P, Debnath P. A regression equation for the estimation of VO2max in Nepalese male adults. 2010.

Culpepper MI, Francis KT. An anatomical model to determine step height in step testing for estimating aerobic capacity. Journal of theoretical biology. 1987;129(1):1-8.

Yoopat P, Vanwonterghem K, Louhevaara V. Evaluation of a step-test for assessing the cardiorespiratory capacity of workers in Thailand: a pilot study. Journal of human ergology. 2002;31(1-2):33-40.

Aghilinejad M, Choobineh A, Sadeghi Z, Nouri M, Ahmadi AB. Prevalence of musculoskeletal disorders among Iranian steel workers. Iranian Red Crescent Medical Journal. 2012;14(4):198.

Siconolfi SF, Cullinane EM, Carleton RA, Thompson PD. Assessing VO2max in epidemiologic studies: modification of the Astrand-Rhyming test. Medicine and science in sports and exercise. 1982;14(5):335-8.

Tuxworth W, Shahnawaz H. The design and evaluation of a step test for the rapid prediction of physical work capacity in an unsophisticated industrial work force. Ergonomics. 1977;20(2):181-91.

Golbabaaei F, Omidvari M. Man tehrmal environment. Tehran: University of Tehran Press; 2008. p. 75-82. Persian.

Zare Derisi F, Rastegar L, Hosseini S, Daneshmandi H, Choobineh A, Mohammadbeigi A. Correlation of astrand and ACSM protocols in estimating the maximum aerobic capacity (Vo2-Max). Journal of Ergonomics. 2014;1(3):27-35. persian

Beere PA, Russell SD, Morey MC, Kitzman DW, Higginbotham MB. Aerobic exercise training can reverse age-related peripheral circulatory changes in healthy older men. Circulation. 1999;100(10):1085-94.

Virtanen M, Vahtera J, Pentti J, Honkonen T, Elovainio M, Kivimäki M. Job strain and psychologic distress: influence on sickness absence among Finnish employees. American journal of preventive medicine. 2007;33(3):182-7.


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