PHYSICAL FITNESS RELATED TO HEALTH AND CARDIAC RISK OF WORKERS WHO PERFORM WORK ACTIVITIES WITH DIFFERENT PHYSICAL WORKLOAD INTENSITIES
The purpose of this study was to evaluate the physical fitness related to health and cardiac risk of workers who perform work activities with different physical workload intensities. Twenty six volunteers (16 men and 10 women) gave their formal consent to participate in the study and were evaluated, aged between 40 to 60 years of old, sedentary, healthy, employed in activities that require different types of physical overload. Subjects were divided into two groups according to the nature of the work activity performed. Group Ⅰ was composed of workers who perform office and administrative activities. Group Ⅱ was composed of workers who perform activities of carpentry, mounting of wood frames and manual material handling. Data of weight, height, body mass index (BMI), body fat percentage (％BF), rest heart rate (HR rest), rest systolic blood pressure (SBP rest), rest diastolic blood pressure (DBP rest), laboratory tests of total cholesterol (TChol), triglycerides (TG) and fasting plasma glucose (FPG) were collected from each worker. In addition to that, RISKO questionnaire was applied for assessment of cardiac risk. The physical fitness of each worker was evaluated through a series of tests which comprise the following: sit and reach test, maximal isometric handgrip strength test, horizontal jump test, maximal abdominal pushups test and cardiorespiratory endurance test. The maximum oxygen consumption (VO2 max) of each worker was estimated from the maximum heart rate data obtained in the end of the cardiorespiratory endurance test. Student t Test was used to compare the data between groups with significance level established in 5％. The results showed that there were no significant differences in the values of％BF, rest SAP, TChol, TG and FPG between groups (p>0.05). There were significant differences in the values of rest HR (p<0.01) and rest DBP (p<0.05) between groups. The results of physical fitness related to health showed significant difference only for the left hand in the maximal isometric handgrip strength test (p<0.05). The result for estimated VO2 max. did not show significant differences between groups (p>0,05). The cardiac risk classification revealed equivalent distribution for the workers in group Ⅰ, situated between ‘below the average risk and ‘moderate risk. Group Ⅱ showed greater variation of cardiac risk classification, with predominance observed for ‘general average risk. The higher incidence risk factors between groups Ⅰ and Ⅱ were family background for cardiac disease and high diastolic blood pressure. The lower incidence risk factors among workers in group Ⅰ were tobacco smoking, high cholesterol and high systolic blood pressure, and among workers in group Ⅱ the risk factors of lower incidence were obesity and tobacco smoking. The results suggest that the physical overload imposed by these work activities did not have an influence on the physical fitness of the workers. The ‘muscle strength component may have been influenced by the physical characteristics observed in the carpentry work. The risk for the development of cardiovascular diseases between groups does not seem to have a significant influence of the physical fitness related to the nature of the work activity performed.
Fabrício Augusto Menegon Frida Marina Fischer Maria Marques Gomes Bertolini
School of Public Health, Department of Environmental Health, University of S(a)o Paulo Department of Morpho-physiological Sciences, State University of Maringá
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-5
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）