Estimating Aerobic Capacity (VO2-max) Using a Single-stage Step Test and Determining its Effective Factors
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Abstract
Maximal Aerobic Capacity (VO2-max) is an indicator of 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. This cross-sectional study was conducted on 60 workers in a metal industry in Tehran, in 2017. Data collection tools were 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. 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-maxusingsingle-stage step test and BMI (P=0.01), number of hours of exercise per week (P=0.009) and age (P=0.01). 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.
Mououdi MA, Choobineh AR. Ergonomics in practice: selected ergonomics topics. Nashr-e-Markaz, Tehran, Iran, 1999. pp 81-94.
.Motallebi Kashani M, Lahmi M, Khavanin A. Evaluation of physical work capacity at Iranian workers. ICE07 Kuala Lumpur. 2007:42-7.
Balderrama C, Ibarra G, De La Riva J, Lopez S. Evaluation of three methodologies to estimate the VO 2max in people of different ages. . Appl Ergon 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. Int J Occup Saf Ergon 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). Rev Int Cienc Deporte 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)19-25.
Chatterjee P, Banerjee AK, Das P, Debnath P. A regression equation for the estimation of maximum oxygen uptake in Nepalese adult females. Asian J Sports Med 2010 Mar;1(1):41.
Culpepper MI, Francis KT. An anatomical model to determine step height in step testing for estimating aerobic capacity. J Theor Biol 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. J Hum Ergol 2002;31(1-2):33-40.
Rostami R, Zamanian Z, Hasanzadeh J. . Investigation of the effect of noise exposure in the workplace on the general health of steel industry workers. Int J Occup Hyg. 2015 Oct 11;5(2):53-5.
Sahamii R, Omidvar M, Lotfi FH. Performance Assessment of HSE Management Systems: A Fuzzy Approach in a Steel Manufacturing Company. Int J Occup Hyg. 2016 Jun 1;8(2).
Aghilinejad M, Choobineh A, Sadeghi Z, Nouri M, Ahmadi AB. Prevalence of musculoskeletal disorders among Iranian steel workers. Iran Red Cresc Med J 2012;14(4):198.
.Siconolfi SF, Cullinane EM, Carleton RA, Thompson PD. Assessing VO2-max in epidemiologic studies: modification of the Astrand-Rhyming test. Med Sci Sports Exerc 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. Ergo J 1977;20(2):181-91.
Golbabaaei F, Omidvari M. Man tehrmal environment. Tehran: University of Tehran Press; 2008. p. 75-82. [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. Am J Prev Med 2007;33(3):182-7.
| Files | ||
| Issue | Vol 9 No 4 (2017) | |
| Section | Original Article(s) | |
| Published | 2017-11-18 | |
| Keywords | ||
| VO2-max Physical work capacity Step test | ||
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