The influence of decision latitude on health indicators under high work intensity

2012 ◽  
Author(s):  
Stephan Hinrichs ◽  
Erich Latniak
2009 ◽  
Vol 148 (4) ◽  
pp. 375-394 ◽  
Author(s):  
Ève CAROLI ◽  
Jérôme GAUTIÉ ◽  
Annie LAMANTHE

1979 ◽  
Vol 48 (3_suppl) ◽  
pp. 1111-1126 ◽  
Author(s):  
Donald H. Horstman ◽  
William P. Morgan ◽  
Allen Cymerman ◽  
James Stokes

The purpose of this study was to describe the pattern of change in effort sense and the value of this pattern in predicting work end-point at relatively high work intensity (80% V̇O2 max). The patterns of change of various physiological functions were also observed. Two modes of work (walking and running) were compared to ascertain generalizability of results. 26 healthy male volunteers served as subjects. Time to exhaustion (ET) did not differ between walking and running. As work continued during both tasks, significant increases of V̇E, V̇E/V̇O2, V̇E/V̇CO2 and HR and a significant decrease of ET were observed; while V̇O2 and R remained fairly constant. V̇O2 and V̇E during the run were about 5% greater than during the walk; there were no differences in other measures. Ratings of perceived exertion (RPE) from the Borg Scale were identical for both conditions, increasing in a near linear fashion from a value of 12.9 at 25% of total work time to 18.9 at exhaustion. Ratings obtained at 25 and 50% ET were extrapolated to time of exhaustion; the point of intercept corresponded to ratings of perceived exertion for maximal work. At exhaustion, subjects rated perception of respiratory exertion for the walk as less than that for the run; perception of leg exertion was not different for the two conditions. Plasma lactate, epinephrine and norepinephrine concentrations following exercise did not differ between the two conditions. The findings for the walking experiment were essentially replicated in a second investigation involving another 28 subjects. It is concluded that, with the exception of V̇O2 and some ventilatory parameters, walking and running ar the same relative work intensity resulted in comparable perceptual and physiological responses. Psychophysical judgments made early during work were reasonably accurate predictors of exhaustion time.


Modern China ◽  
2017 ◽  
Vol 43 (6) ◽  
pp. 559-589 ◽  
Author(s):  
Eli Friedman

In recent years, scholars have begun to document the emergence of private migrant schools in urban China. However, neither education nor labor scholars have empirically investigated teachers’ work. Because it is precisely those with the fewest economic resources that have been restricted to privatized education in the city, migrant schools are dependent on a highly exploitative form of employment. Based on a study of Guangzhou and Beijing, we see that there is diversity in working conditions. In Beijing, teachers are subject to extralegal precarity in which basic legal enforcement is tenuous to nonexistent. In Guangzhou, there is greater legal compliance, but management has employed market discipline to shift risk onto teachers. In general, teachers’ work in migrant schools is similar to other forms of migrant labor in China, characterized by low pay, long hours, high work intensity, and lack of job security. The article concludes by assessing the divergent politics of migration in each city while considering the implications for socioeconomic inequality.


2021 ◽  
Author(s):  
Ziyang Mei

Interventional doctors are exposed to radiation hazards during the operation and endure high work intensity. Remote vascular interventional surgery robotics is a hot research field that can not only protect the health of interventional doctors, but also improve accuracy and efficiency of surgeries. However, the current vascular interventional robots still have many shortcomings to be improved. This article introduces the mechanical structure characteristics of various fields of vascular interventional therapy surgical robots, discusses the current key features of vascular interventional surgical robotics in force sensing, haptic feedback, and control methods, summarizes current frontiers about autonomous surgery, long geographic distances remote surgery and MRI-compatible structures. Finally, combined with the current research status of vascular interventional surgery robots, this article analyzes the development directions and puts forward a vision for the future vascular interventional surgery robots.


2021 ◽  
Author(s):  
Ziyang Mei

Interventional doctors are exposed to radiation hazards during the operation and endure high work intensity. Remote vascular interventional surgery robotics is a hot research field that can not only protect the health of interventional doctors, but also improve accuracy and efficiency of surgeries. However, the current vascular interventional robots still have many shortcomings to be improved. This article introduces the mechanical structure characteristics of various fields of vascular interventional therapy surgical robots, discusses the current key features of vascular interventional surgical robotics in force sensing, haptic feedback, and control methods, summarizes current frontiers about autonomous surgery, long geographic distances remote surgery and MRI-compatible structures. Finally, combined with the current research status of vascular interventional surgery robots, this article analyzes the development directions and puts forward a vision for the future vascular interventional surgery robots.


2021 ◽  
Author(s):  
Yang Zhao ◽  
Ziyang Mei ◽  
Jingsong Mao ◽  
Qingliang Zhao ◽  
Gang Liu ◽  
...  

Interventional doctors are exposed to radiation hazards during the operation and endure high work intensity. Remote vascular interventional surgery robotics is a hot research field that can not only protect the health of interventional doctors, but also improve accuracy and efficiency of surgeries. However, the current vascular interventional robots still have many shortcomings to be improved. This article introduces the mechanical structure characteristics of various fields of vascular interventional therapy surgical robots, discusses the current key features of vascular interventional surgical robotics in force sensing, haptic feedback, and control methods, summarizes current frontiers about autonomous surgery, long geographic distances remote surgery and MRI-compatible structures. Finally, combined with the current research status of vascular interventional surgery robots, this article analyzes the development directions and puts forward a vision for the future vascular interventional surgery robots.


2014 ◽  
Vol 20 (7/8) ◽  
pp. 307-327 ◽  
Author(s):  
Steven Dhondt ◽  
Frank Delano Pot ◽  
Karolus O. Kraan

Purpose – This paper aims to focus on participation in the workplace and examines the relative importance of different dimensions of job control in relation to subjective well-being and organizational commitment. These dimensions are job autonomy (within a given job), functional support (from supervisor and colleagues) and organizational level decision latitude (shop-floor consultancy on process improvements, division of labor, workmates, targets, etc.). Interaction with work intensity is looked at as well. Design/methodology/approach – Measurements and data were taken from the European Working Conditions Survey, 2010. The paper focusses on salaried employees only. The sample was further limited to employees in workplaces consisting of at least 50 workers. There are 2,048 employees in the final sample, from Denmark, Ireland, The Netherlands, Finland, Sweden and the UK. In this paper, the focus is not on differences between countries, and adding more countries would have introduced too many country characteristics as intermediate variables. Findings – In the regression analyses, functional support and organizational level decision latitude showed stronger relations with the outcome variables than job autonomy. There was no relation between work intensity and the outcome variables. Two-way interactions were found for job autonomy and organizational level decision latitude on subjective well-being and for functional support and organizational level decision latitude on organizational commitment. A three-way interaction, of all job control variables combined, was found on organizational commitment, with the presence of all types of job control showing the highest organizational commitment level. No such three-way interaction was found for subjective well-being. There was an indication for a two-way interaction of work intensity and functional support, as well as an indication for a two-way interaction of work intensity and organizational level decision latitude on subjective well-being: high work intensity and low functional support or low organizational level decision latitude seemed to associate with low well-being. No interaction was found for any dimension of job control being high and high work intensity. Research limitations/implications – Although this study has all the limitations of a cross-sectional survey, the results are more or less in accordance with existing theories. This indicates that organizational level decision latitude matters. Differentiation of job control dimensions in research models is recommended, and so is workplace innovation for healthy and productive jobs. Originality/value – Most theoretical models for empirical research are limited to control at task level (e.g. the Job Demand-Control-Support model of Karasek and Theorell. The paper aims at nuancing and extending current job control models by distinguishing three dimensions/levels of job control, referring to sociotechnical systems design theory (De Sitter) and action regulation theory (Hacker) and reciprocity (Akerlof). The policy relevance regards the consequences for work and organization design.


Author(s):  
Akhmedova Jamilya Adizovna

The following article discusses the problem of organizing and monitoring the special-physical and technical training of young gymnasts at the stage of sports improvement. It is shown that the main advantage achieved during the training session with objects is the regulation of the number of repetitions at high work intensity.


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