The Effect of Challenging Somatosensory Inputs on Eye Movement and Postural Sway Patterns of Workers

Author(s):  
L. Kind ◽  
A. Bhattacharya ◽  
P. Succop

For the construction industry, especially the roofing industry, slips/trips and falls have the highest incident rate leading to an injury and fatality. This study investigated the eye movement and postural sway patterns of industrial workers (n=48) with various work experience (months of work experience on inclined surfaces), fatigue conditions (none, half and full), visual cues (none, H cue), tasks (stationary, reach) and surface inclinations (0°, 14°, 26°). Eye movement variables of length and area of movement as well as fixation data and postural sway variables of area and length were significantly affected (p<0.05) by incline, cue, task and work experience. The effect of the eye movement variables on the postural balance was limited and further study is necessary. The use of visual cues is an effective means of increasing postural stability and could be used in occupational situations where no vertical or horizontal cues are naturally available.

2003 ◽  
Vol 3 (4) ◽  
pp. 251-259
Author(s):  
Laurel Kincl ◽  
Amit Bhattacharya ◽  
Paul Succop ◽  
Angshuman Bagchee

Maintenance of upright balance involves interplay between sensory (somatosensory, vestibular and visual) inputs and neuro-motor outputs. Visual spatial perception (VSP) of vertical and horizontal orientation plays a significant role in the maintenance of upright balance. For this experiment, a custom designed computer program randomly generated 42 images of horizontal and vertical lines at various angles for 60 industrial workers (39 ± 9.8 years). Half of the workers had more than three years of experience working on inclined and/or elevated surfaces. The main effects investigated included within subject factors of standing surface inclination (0°, 14° and 26°), job experience (number of months), and postural workload (0%, 50% or 100%). The VSP outcome measure was the count of correct responses to the angles presented. The inclination did not have a significant effect on VSP, but the parameter estimates indicated less correct responses on the inclined surfaces. The postural workload significantly affected the VSP, indicating that with increased workload, less correct responses were given. Finally, job experience was found to improve VSP response scores. In summary, these results indicate that job experience increases accurate VSP, while workloads and inclined work surfaces decrease accurate VSP responses.


2003 ◽  
Vol 3 (2) ◽  
pp. 83-97 ◽  
Author(s):  
Amit Bhattacharya ◽  
Paul Succop ◽  
Laurel Kincl ◽  
Ming Lun Lu ◽  
Angshuman Bagchee

The purpose of this study was to subjectively and objectively evaluate the postural stability of forty industrial workers while performing simulated industrial tasks on inclined and elevated surfaces under various combinations of environmental lighting and noise distraction conditions. The results suggest the following ordering for the effects of risk factors on objective measure of postural balance: (1) environmental lighting, (2) elevation of standing surface, (3) gender, (4) inclination of standing surface, (5) age. The task performed would be ranked highest had the data been analyzed across the three tasks. The postural sway length significantly increased with increasing elevations and inclination angles for the stationary and bending tasks implying body's perceived risk of fall deployed increase in postural muscle contraction. This compensatory mechanism indicated by increased sway length actually did reduce postural sway amplitudes with increasing elevation but for increasing inclination the postural sway amplitudes increased. While the objective measure of postural sway increased with the increasing combination of elevation and inclination, the subjective measure of stability did not show a significant two way interaction, implying that the participants were not able to perceive the combined risk to postural imbalance, causing potential inability to deploy appropriate postural muscle corrective actions.


2019 ◽  
Vol 13 (1) ◽  
pp. 11-22
Author(s):  
Steven R. Torgerud ◽  
HyeYoung Cho ◽  
James D. McGlothlin ◽  
Shirley Rietdyk

Background:Balance skills are challenged at the roofing worksite by dynamic visual cues in the form of clouds and trees that move with the wind; any instability may result in a fall from height.Aim:To determine if roofers are less susceptible to a dynamic visual surround (moving room) when stationary cues were available, relative to people who do not work in a similar environment.Methods:Forty male adults participated, including young roofers (N=10,26.3 years), middle-aged roofers (N=10,50.6 years), young controls (N=10,26.2 years) and middle-aged controls (N=10,55.1 years). Center of pressure root mean square (APRMS) was assessed during quiet standing and four moving room conditions when stationary cues were:(1)not in place,(2)in the foreground (inside the moving room),(3)in the background (outside the moving room, but still visible) and (4)in the foreground and background. Results:A workgroup by visual cue interaction was observed (p=0.032), where roofers had up to 18% lower APRMS relative to controls when the background references were in place. The interaction effect was independent of age. Interpretation:The roofers were able to suppress visually-induced postural sway when stationary visual cues were present in the background, likely due to the severe consequences for loss of balance when working at height. The suppression was maintained in aging workers.


1999 ◽  
Author(s):  
A. Bagchee ◽  
A. Bhattacharya ◽  
P. Succop ◽  
M. Medvedovic

2020 ◽  
Vol 11 (2) ◽  
pp. 157-173
Author(s):  
Natalya V. Prokazina ◽  
Victor L. Lantsev

This article points out that the process of modernizing the Russian Federation’s education system is aimed at developing such a professional body of teachers that would be prepared to solve issues associated with improving the quality of education. Given such a situation, the need arises for finding effective means of developing the professional competencies of teachers. One direction for modernizing the education system would be a national system of advancement for teachers, which postulates the need for creating the right conditions for the formal and informal training of educators. Given the context, socio-professional teachers’ unions turn out to be especially vital. The goal of this study was to identify how active participation in the practices of such organizations is connected to a young teacher’s professional growth. The study was conducted in Orel Province. Members of the regional young math teachers’ association were selected to be the object of research, with questionnaire survey used as the research method. The study focused on several aspects of teaching: professional difficulties faced by young educators, the mentorship system, an educator’s value orientations, professional growth. The results of the study allowed for identifying three groups of educators, the first one being young teachers who do not actively participate in educational events. The second group included teachers who do not share their own methodical expertise, but partake in seminars and master classes. The third group consists of educators who publically share their experience and are prepared to think of new ideas for future events. The article shows that the Association’s active participation in various events significantly affected the individual value orientations of trade professionals. Those educators who shared their publically work experience demonstrated a higher degree of professional aptitude in performing their jobs within the national system of teachers’ training. ctive efforts as members of the Association helped young educators quickly adapt within their professional community and establish firm social connections with their colleagues. The authors suggest the need for developing a system of mentorship in educational institutions, which would utilize resources provided by socio-professional teachers’ unions.


2010 ◽  
Vol 32 (4) ◽  
pp. 650-655 ◽  
Author(s):  
Saritha Miriyala Radhakrishnan ◽  
Vassilia Hatzitaki ◽  
Athanasios Vogiannou ◽  
Dimitrios Tzovaras
Keyword(s):  

2020 ◽  
Vol 110 (1) ◽  
Author(s):  
Patricia Griffon ◽  
Bruno Vie ◽  
Jean Paul Weber ◽  
Yves Jammes

Background: Several works have shown the benefits of foot orthosis intervention on postural stability in healthy individuals and patients with foot malalignment. However, the effects of foot orthoses on the daily ambulatory activities explored by the Six-Minute Walk Test (6MWT) were never examined. We hypothesized that foot orthoses could increase the gait distance and attenuate the post-6MWT posture alterations already reported in healthy individuals. Methods: In ten normal-weight (NW) and ten obese patients with foot malalignment and/or abnormal foot arch, we examined the benefits of 4 weeks of custom-molded orthosis intervention (D30) on 6MWT gait distance, fatigue sensation scores, ankle plantarflexion force, and post-6MWT sway of the center of pressure (COP) measured by a pedobarographic platform. Data were compared with those measured in two control-matched groups of ten NW and ten obese individuals, explored at study inclusion and at D30. Results: At study inclusion, the post-6MWT changes in COP surface and the medial and lateral COP deviations were significantly higher in obese participants who needed to wear the foot orthoses compared with obese control subjects. The foot orthosis intervention significantly improved the ambulatory performances of NW and obese individuals during the 6MWT, attenuated the bodily fatigue sensation after the 6MWT, and reduced the post-6MWT COP deviations, with the benefits of insoles being significantly accentuated in obese participants. Conclusions: Four weeks of foot orthosis intervention significantly increases gait distance and is an effective means to reduce postural sway after walking.


2019 ◽  
Vol 18 (4) ◽  
pp. 847-864
Author(s):  
John Aliu ◽  
Clinton Ohis Aigbavboa

Purpose Universities have become training centres or “academic hubs” where skilled labour for societal and global consumptions are continuously produced. More so, the quality of teaching (pedagogy) provided by universities is essential in enhancing the skills, expertise and competencies of students who are required to meet the needs of the construction industry after graduation. Hence, the purpose of this study is to assess employers’ level of satisfaction with the employability skills of built-environment graduates in Nigeria. Design/methodology/approach A quantitative approach was adopted for this study with close-ended questionnaires administered to respondents drawn from professionals in the Nigerian construction industry. Out of 150 questionnaires disseminated, 131 were completed and 126 were usable, signifying an 87% response rate. Data from this research were analysed using descriptive and exploratory factor analysis. Findings Employers are seemingly satisfied with the sound academic record of built-environment graduates. They also affirmed their contentment with graduates’ willingness to learn and the way they achieve tasks with positive results. However, they expressed their dissatisfaction with the graduates’ prior work experience, communication skills and technical competencies in handling industry tasks effectively. Research limitations/implications Data was collected from construction professions across two cities – Abuja and Lagos. Because of the limited budget allocated for this study, other regions were not considered. Because of time and financial implications, it was extremely impossible to visit all 36 states. It is, therefore, impossible to generalise the results of this research to the larger population. In generalising the results on a larger scale, the study would have to factor in a more diverse sample to ensure it is more representative. A more diverse sample may mitigate any possible bias that may arise from a self-administered questionnaire. Practical implications From the survey results obtained from the respondents, it was observed that general knowledge about local and global trends, management skills, teamwork skills, work experience, communication skills, critical thinking skills, numeracy skills and civic responsibility are among the major non-academic skills lacking among built-environment graduates. This places significant pressures on universities in Nigeria to revisit and revamp its curricula in developing these skills among students who require them to thrive in the construction industry. Originality/value Although the subject of employability has been adequately discussed across various fields (accountancy, psychology, management, business, marketing, etc.), there exist limited research studies in the built-environment context, a gap, which this study aims to fill. This study also provides several approaches through which employability skills can be developed.


Neuroscience ◽  
2019 ◽  
Vol 416 ◽  
pp. 177-189 ◽  
Author(s):  
Cédrick T. Bonnet ◽  
Tanguy Davin ◽  
Jean-Yves Hoang ◽  
Stéphane Baudry

2018 ◽  
Vol 565 (10) ◽  
pp. 12-14
Author(s):  
Teresa Myjak

This article discusses forms of employment and attitudes towards work measured with internal motivation to work, job satisfaction and loyalty of employees towards the organization. Primary identity (gender, age), secondary identity (residence, education) and organizational identity (occupied position, work experience) were considered in studying the behavior of people in the organization in the context of the form of employment (on the basis of the present research). This article is based on selected literature of the subject and part of own research carried out from 2012 to 2014 in the Małopolskie voivodeship in enterprises operating in the public sector in the construction industry.


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