scholarly journals AVALIAÇÃO DE CARGA FÍSICA DOS OPERADORES DE MÁQUINAS AGRÍCOLAS NO LITORAL LESTE DO CEARÁ

2019 ◽  
Vol 34 (4) ◽  
pp. 455-461
Author(s):  
Deivielison Ximenes Siqueira Macedo ◽  
Viviane Castro dos Santos ◽  
Leonardo de Almeida Monteiro ◽  
Jefferson Auteliano Carvalho Dutra ◽  
Wesley Araújo da Mota
Keyword(s):  
Heart Rate ◽  
Work Load ◽  
Physical Load ◽  
Physical Workload ◽  
Eastern Coast ◽  
Physical Work ◽  
Agricultural Machinery ◽  
Production Chain ◽  
Rate Analysis ◽  
Rest Time

AVALIAÇÃO DE CARGA FÍSICA DOS OPERADORES DE MÁQUINAS AGRÍCOLAS NO LITORAL LESTE DO CEARÁ   DEIVIELISON XIMENES SIQUEIRA MACEDO¹, VIVIANE CASTRO DOS SANTOS², LEONARDO DE ALMEIDA MONTEIRO³, JEFFERSON AUTELIANO CARVALHO DUTRA4, WESLEY ARAÚJO DA MOTA5   1 Departamento de Engenharia Agrícola, Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. [email protected] 2 Departamento de Engenharia Agrícola, Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. [email protected] 3 Departamento de Engenharia Agrícola, Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. [email protected] 4 Departamento de Engenharia Agrícola, Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. [email protected] 5 Departamento de Engenharia Agrícola, Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. [email protected]   RESUMO: Cada vez mais o uso do trator é indispensável na cadeia produtiva da maioria das culturas de interesse econômico. Esse crescente uso dos tratores reflete não só no aumento da produtividade, mas também no risco ao quais os operadores de máquinas agrícolas estão sujeitos. Entre os vários problemas, pode-se citar a carga física, atividades consideradas pesadas que podem causar tonturas, náuseas e até mesmo desmaio, aumentando e muito o risco de acidentes, uma forma de avaliar essa carga física é através da análise de frequência cardíaca. A partir dessas informações, objetivou-se avaliar a carga de trabalho físico em diferentes atividades com o trator, verificando se essas atividades são insalubres para o operador de máquinas agrícolas. O trabalho foi conduzido na macrorregião do litoral leste do Ceará. A carga física de trabalho foi mensurada por meio de levantamento de frequência cardíaca dos operadores nas atividades de gradagem, pulverização e colheita/transporte de coco. As atividades de pulverização e colheita foram classificadas como leves e a gradagem foi classificada como moderadamente pesada. A atividade de colheita foi a que exigiu menor esforço por parte dos operadores. Nenhuma das atividades se mostrou insalubre e nem precisou de tempo de descanso, porém a atividade de gradagem foi considerada moderadamente pesada para as condições do estudo, havendo a necessidade de uma atenção maior com essa atividade.   Palavras-chave: Frequência Cardíaca, Trator. Ergonomia.   PHYSICAL CHARGE ASSESSEMENT OF AGRICULTURAL MACHINERY OPERATORS IN THE EAST LARGE COAST OF CEARÁ   ABSTRACT: Tractor use is increasingly indispensable in the production chain of most economic interest. The rising tractors use reflects not only the productivity increase but also the risk to which agricultural machinery operators are subject. Among several risks, can be mentioned the physical load, activities considered heavy, that can cause dizziness, nausea and even fainting, increasing the accidents risk. One way to evaluating this physical load is through the heart rate analysis. From this information, the aim of this work was to evaluate the physical workload in different activities with tractor, verifying if these activities are unhealthy for agricultural machine operator. The work was conducted on the eastern coast of Ceará. The physical work load was performed by means of operators’ heart rate survey activities of harrowing, spraying and coconut harvesting and transport. Spraying and harvesting activities were classified as light and harrowing was classified as moderately heavy. Harvest activity was the one that demanded less effort from operators. None of the activities were unhealthy and did not require rest time, however harrowing activity was considered moderately heavy by study conditions thus, there is a need for a greater attention with this kind of activity.   Keywords: Heart Rate, Tractor, Ergonomics.

scholarly journals O8D.6 High physical workload and disability pension: a follow-up study of swedish men until 59 years of age

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A76.2-A76
Author(s):  
Katarina Kjellberg ◽  
Daniel Falkstedt ◽  
Anette Linnersjö ◽  
Tomas Hemmingsson
Keyword(s):  
Labour Market ◽  
Disability Pension ◽  
Social Background ◽  
Work Load ◽  
Psychological Characteristics ◽  
Physical Workload ◽  
Physical Work ◽  
Physical Work Load ◽  
Strenuous Work ◽  
Market Factors

BackgroundIn Sweden, the proportion of the population that remains in paid employment until normal retirement age of 65 years is less than 50% in blue-collar groups, compared to 60%–75% in white-collar occupations. High physical workload has been associated with early exits from the labor market through disability pensions (DP) in many studies. However, identified risk factors for DP from early life may be more prevalent among men in heavy manual occupations than in others. The aim was to investigate the association between high physical work load in middle age and DP before age 59, adjusting for social background, physical ability, psychological characteristics, lifestyle and education measured before labour market entrance.MethodsThe study is based on a Swedish conscription cohort of 49 321 men born 1949–1951. At enlistment 1969/1970 information was collected about cardiorespiratory fitness, social background, psychological characteristics and health behaviours, e.g. smoking. Physical workload was estimated with a job exposure matrix based on questions concerning heavy lifting, strenuous work postures, repetitive work and physically strenuous work from the Swedish Work Environment Surveys 1989–97. Mean values for men of a composite physical exposure variable were grouped into quartiles; high, medium-high, medium-low and low physical workload, and assigned to occupational titles from the census 1990. The study group was followed regarding DP from age 40 to 59.ResultsExposure to high (HR 2.67, CI 95% 2.42–2.95), medium-high (HR 2.43, CI 95% 2.20–2.69) and medium-low (HR 1.31, CI 95% 1.18–1.47) physical workload, compared with low, were associated with DP up to age 59. The increased risks remained, but were clearly attenuated after adjustments for pre-labour market factors, especially psychological characteristics and education.ConclusionThe results are in line with a major effect of high physical work load on disability pension, even though adjustments for pre-labour market factors clearly attenuated the risks.

Physical work capacity of college women

1965 ◽  
Vol 20 (2) ◽  
pp. 263-266 ◽  
Author(s):  
Ernest D. Michael ◽  
Steven M. Horvath
Keyword(s):  
Heart Rate ◽  
Body Weight ◽  
Exercise Tolerance ◽  
Maximal Exercise ◽  
Work Load ◽  
Work Capacity ◽  
Physical Work ◽  
Physical Work Capacity ◽  
Maximal Heart Rate ◽  
Cardiorespiratory Function

Maximal exercise tolerance tests were given to 30 female subjects 17-22 years old. The test consisted of exercising 1 min at a work load of 300 kpm/min and increasing the work load 150 kpm/min each minute until the subject could no longer exercise. The maximal heart rate level averaged 184 beat/min with a range between 170 and 202 beat/min. The average maximal Vo2 was 1.78 liter/min or 29.8 ml/kg per min. The submaximal ventilatory measurements were similar for all subjects while the heart rate levels at the submaximal work loads differentiated the subjects when grouped according to maximal work-load capacities. Prediction of maximal work capacity could not be made for individuals from any single submaximal measurement. There was .56 correlation between body weight and maximal work capacity with only a .32 relationship between maximal Vo2 and Vo2 per kilogram body weight. exercise tolerance of women; cardiorespiratory function of women during exercise; submaximal cardiorespiratory response; maximal cardiorespiratory measurements of women; response to maximal exercise; prediction of exercise tolerance Submitted on May 5, 1964

Physiological and Subjective Reactions to Different Physical Work Loads

1969 ◽  
Vol 28 (2) ◽  
pp. 343-349 ◽  
Author(s):  
Marianne Frankenhaeuser ◽  
Birgitta Post ◽  
Bo Nordheden ◽  
Hans Sjoeberg
Keyword(s):  
Heart Rate ◽  
Systolic Pressure ◽  
Work Load ◽  
Bicycle Ergometer ◽  
Physical Work ◽  
Healthy Male ◽  
Catecholamine Excretion ◽  
Excretion Rates ◽  
Cardiovascular Functions

Catecholamine excretion, cardiovascular functions, and subjective effort were studied in 10 healthy male Ss in a control condition and in three experimental sessions in each of which 5 successive 6-min. tests of either 150, 450, or 750 kpm/min., were performed on a bicycle ergometer. Catecholamine-excretion rates remained close to control levels at the lower work loads, while the highest load induced a significant increase in both adrenaline and noradrenaline output. Heart rate, systolic pressure, and subjective effort increased consistently with increasing work load.

Locating and Reducing Cognitive Load in Paced and Unpaced Tasks

1978 ◽  
Vol 22 (1) ◽  
pp. 507-507
Author(s):  
James L. Knight ◽  
Gavriel Salvendy ◽  
Gary Endicott ◽  
Barbara Basila ◽  
Joseph Sharit
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Cognitive Load ◽  
Visual Display ◽  
Work Load ◽  
Physical Work ◽  
Experimental Conditions ◽  
Physical Work Load ◽  
Event Timing ◽  
Extrinsic Feedback

Heart rate variability often decreases with increased cognitive load (Kalsbeek, 1971). Studies (Manenica, 1977) varying task pacing requirements unexpectedly revealed decreased SA in self-pacing (self-controlled intra-task event timing) compared to external-pacing (experimenter- or apparatus-controlled event timing). But why should self-pacing ever involve higher cognitive load? Since Ss must time events and otherwise monitor and structure their own performance in self- but not external-pacing, perhaps these responsibilities lead to higher cognitive load in self-pacing when work-rates are equated between self-and externally-paced conditions. Two experiments were conducted to examine possible sources of cognitive load in self-pacing. In Experiment II, an attempt was made to reduce cognitive load by providing new sources of extrinsic feedback on a visual display. In both studies physical work load was held constant across experimental conditions.

scholarly journals AVALIAÇÃO DA CARGA DE TRABALHO FÍSICO E DO RISCO DE LER/DORT EM TRABALHADORES DA COLHEITA EM ÁREA COM MADEIRA DANIFICADA PELO VENTO

Nativa ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 66
Author(s):  
Luciano José Minette ◽  
Stanley Schettino ◽  
Amaury Paulo Souza ◽  
Denise Ransolin Soranso ◽  
Verilma Amparo Barbosa
Keyword(s):  
Work Load ◽  
Minas Gerais ◽  
Physical Workload ◽  
Physical Work ◽  
Work Related ◽  
Wood Harvesting ◽  
Risk Of Injury ◽  
Repetitive Movements ◽  
Static Effort ◽  
Heavy Loads

Este estudo realizou uma avaliação ergonômica dos trabalhadores da colheita de madeira danificada pelo vento, no Estado de Minas Gerais, de forma a determinar os riscos ergonômicos a que os trabalhadores estavam expostos durante o desenvolvimento dessas atividades. Foi avaliado, para cada uma das atividades desenvolvidas, a carga de trabalho físico por meio da frequência cardíaca e o risco de LER/DORT, através da avaliação simplificada do fator biomecânico no risco para distúrbios músculo esquelético de membros superiores relacionados ao trabalho. Os resultados evidenciaram que o ambiente de trabalho estudado proporcionava diferentes riscos ergonômicos aos trabalhadores. Na avaliação da carga de trabalho físico, todas as atividades avaliadas encontraram-se acima dos limites de carga cardiovascular recomendados, o que expõe os trabalhadores ao risco de desenvolvimento de doenças ocupacionais, sendo necessária a reorganização do trabalho. A análise dos riscos de surgimento de LER/DORT indicou, da mesma forma, a necessidade de reorganização do trabalho, pois a execução das atividades oferecia risco alto a altíssimo de lesões ao trabalhador, principalmente devido à alta frequência de movimentos repetitivos associados ao esforço estático e ao manuseio de cargas pesadas, fatores presentes na rotina da colheita de madeira danificada por ventos.Palavra-chave: manejo florestal, risco ergonômico, saúde do trabalhador. WIND-DAMAGED WOOD HARVESTING: PHYSICAL WORK LOAD AND RSI/WRMD RISK TO THE WORKERS ABSTRACT:This study carried out an ergonomic evaluation of the workers of the harvest of wood damaged by the wind, in the State of Minas Gerais, in order to determine the ergonomic risks to which workers were exposed during the development of these activities. The physical workload by means of heart rate and the risk of RSI/WRMD by means of the simplified evaluation of the biomechanical factor in the risk for work-related upper limb musculoskeletal disorders were evaluated for each of the activities developed. The results showed that the work environment provided different ergonomic risks to workers. In the evaluation of the physical workload, all the activities evaluated were above the recommended limits of cardiovascular load, which exposes the workers to the risk of developing occupational diseases, being necessary the reorganization of the work. The analysis of the risks of the emergence of RSI/WRMD also indicated the need to reorganize the work, since the execution of the activities offered a high risk of injury to the worker, mainly due to the high frequency of repetitive movements associated with the static effort And to the handling of heavy loads, factors present in the routine of harvesting of wood damaged by winds.Keywords: forest management, ergonomic risk, worker’s health. DOI:

scholarly journals First trimester employment, working conditions and preterm birth: a prospective population-based cohort study

2021 ◽  
pp. oemed-2020-107072
Author(s):  
Tanja Vrijkotte ◽  
Teus Brand ◽  
Gouke Bonsel
Keyword(s):  
Preterm Birth ◽  
Working Conditions ◽  
Work Load ◽  
First Trimester ◽  
Physical Work ◽  
Pregnancy Induced Hypertension ◽  
Prolonged Standing ◽  
Physical Work Load ◽  
Increased Risk ◽  
Induced Hypertension

ObjectivesTo explore the association between working conditions during first trimester and total preterm birth (PTB), and subtypes: spontaneous PTB and iatrogenic PTB, additionally to explore the role of hypertension.MethodsPregnant women from the Amsterdam Born Children and their Development study, filled out a questionnaire between January 2003 and March 2004, two weeks after first prenatal screening (singleton liveborn, n=7561). Working conditions were working hours/week, standing/walking hours/week, physical work load and job strain.ResultsProlonged standing/walking during first trimester was associated with an increased risk for total PTB (OR=1.5; 95% CI 1.0–2.3, after adjustments). Other working conditions were not related to total PTB. The separation into spontaneous and iatrogenic PTB revealed that standing/walking was associated with iatrogenic PTB only (OR=2.09; 95% CI 1.00–4.97). The highest risk was found for the combination of a long workweek with high physical work load (OR=3.42; 95% CI 1.04–8.21). Hypertension did not mediate these associations; however, stratified analysis revealed that high physical work load was only related to iatrogenic PTB when pregnancy-induced hypertension was present (OR=6.44; 95% CI 1.21–29.76).ConclusionThis study provides evidence that high physically demanding work is associated with an increased risk for iatrogenic PTB and not with spontaneous PTB. Pregnancy-induced hypertension may play a role: when present, high physical work load leads to a more severe outcome.

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