Group Of Construction Workers Research Articles

Importance of Prefabrication to Easing Construction Workers' Experience of Mental Health Stressors.

Construction is widely acknowledged for its socioeconomic contributions, although it is also always considered as a dangerous and incident-prone industry. As a new method of working, prefabrication presents better work environments and other benefits that can potentially improve the safety and mental health of construction workers. This study compares the extent of stressors in traditional and prefabricated construction. Eighty-four construction site and factory-based workers in Australia were surveyed. Prefabricated construction respondents reported less experience of industry-related, management/organisational, and personal stressors. Specifically, the stressors found to be weakened by prefabrication were mental fatigue, work injuries, poor working conditions, unfavourable shift rosters, work overload, and poor work-life balance. Furthermore, the degree of the experience of potential mental health improvement factors such as labour effort efficiency, reduced on-site trade overlap, increased mechanised construction, and less dependence on weather conditions, among others, was significantly higher in prefabrication than in traditional construction. The influence of prefabrication on measures of poor and positive mental health is recommended for further studies, particularly by finding its links with the different groups of construction workers.

Energy drinks consumption among construction workers in Indonesia and associated factors

Younger and adults tend to consume energy drinks due to the benefit received as promoted by the manufacturer. This retrospective, cross-sectional study aimed to investigate factors associated with energy-drink consumption in a group of construction workers in Indonesia. Literate construction workers who have consumed any brand of energy drink at least once per week were recruited. Demographic data and health literacy were self-reported. The short version of the test functional health literacy for adults (S-TOFHLA) tool was used to examine health literacy. Kidney function was determined by an estimated glomerulus filtration rate (EGFR). An average EGFR of 83.76 mL/min/1.73 m2 was retrieved from 114 participants. Health literacy (p=.016), pre-existing disease (p=.001), and intensity (p=.029) showed a significant difference with decreased kidney function. Age of the first-time experiencing energy drinks (r=-0.260) and pre-existing disease (r=-0.282) showed negative significance correlations (p=<.001) with kidney function. A family history of comorbidity (ß=-0.213), (p=.023), 95% CI (-6.697－-1.286), was a predictor of lowering kidney function among construction workers with extended ingestion of energy drinks. This study emphasizes the importance of elevating public awareness of possible dangers caused by extending the ingestion of energy drinks on the kidney.

Electromyography-based Fatigue Assessment During Endurance Testing by Different Vibration Training Protocols

Objectives: This study presents a method of assessing muscle fatigue during endurance testing at 50% maximal voluntary contraction (MVC) using electromyography (EMG) information as indirect indices of fatigability in the forearm muscles, namely, flexor digitorum superficialis (FDS); flexor carpi ulnaris (FCU); extensor carpi ulnaris (ECU) and extensor carpi radialis brevis (ECRB)." This study presents a method of assessing muscle fatigue during endurance testing at 50% maximal voluntary contraction (MVC) using electromyography (EMG) information as indirect indices of fatigability in the forearm muscles, namely, flexor digitorum superficialis (FDS); flexor carpi ulnaris (FCU); extensor carpi ulnaris (ECU) and extensor carpi radialis brevis (ECRB). Methods: A randomized comparative experimental design was used during endurance test with 8 VT protocols; based on different combinations of vibration frequency (35 & 45 Hz), amplitude (3±0.5g & 9±0.5g), and exposure duration (30 & 60 seconds), i.e., were given to the study participants for 4 days. A random sampling of participants was conducted from two groups (n=56/group), as follows: individuals with a Sedentary Lifestyle (SL) and a group of Construction Workers (CW). Results: Multivariate Analysis of Variance (MANOVA) results indicated a significant increase in EMG rms, median frequency, waveform length, mean absolute value (P<0.001), and the variance of EMG signal (P<0.05) (except in ECU for the SL group and ECRB for the CW group on the variance of EMG signal) after VT in all muscles of both research groups. Therefore, an increase in the EMG parameter value after a grip endurance task revealing an elevation in EMG signal amplitude is indicative of muscle fiber fatigue. Furthermore, the strongest correlation was found between grip endurance and WL (r=0.471, P<0.001), and EMG rms (r=0.401, P<0.001) of the ECU muscle in the SL group only. Discussion: The patterns of EMG signal represented the amplitude and spectral parameters of the signal, enabling real-time fatigue analysis. Additionally, surface EMG information is useful for indirectly evaluating performance fatigue during the endurance test.

Development of a multimedia intervention to improve pneumoconiosis prevention in construction workers using RE-AIM framework.

Pneumoconiosis is a common occupational lung disease among construction workers. Educational interventions targeting specific ethnic groups of construction workers are of benefit for pneumoconiosis prevention. The aim of this study was to develop a multimedia educational intervention for pneumoconiosis prevention for South Asian construction workers, and to evaluate its feasibility, acceptability and effectiveness in increasing knowledge of pneumoconiosis, modifying beliefs about pneumoconiosis, and enhancing intention to implement measures for its prevention among the workers. This evaluation was performed using the Reach-Effectiveness-Adoption-Implementation-Maintenance framework. A one-group design was adopted and intervention mapping was used to guide the process of intervention development, while the Health Belief Model guided the development of intervention content. The intervention was delivered at construction sites, ethnic minority associations and South Asian community centres. Data were collected via surveys completed at pre-intervention, post-intervention and 3 months after the intervention. A total of 1002 South Asian construction workers participated in the intervention. The participants reported a moderate-to-large increase in knowledge, perceived susceptibility, perceived severity, perceived benefits, cues to action and self-efficacy (Cohen's d: 0.37-0.89), a small reduction in perceived barriers (Cohen's d = 0.12) and a moderate improvement in attitudes and intention to practice (Cohen's d: 0.45, 0.51) at post-intervention. A follow-up survey of 121 participants found that the implementation of preventive measures appeared to increase. Overall, the findings demonstrate that the implementation of a culturally adapted multimedia educational intervention could be an effective approach to improving knowledge, self-efficacy and intention regarding pneumoconiosis prevention among South Asian construction workers.

Symptoms of ocular surface disease in construction workers: comparative study with office workers

BackgroundTo investigate and contrast the prevalence of dry eye symptoms in construction workers and office workers using the OSDI questionnaire.MethodsA cross-sectional, observational study was conducted using the OSDI questionnaire to evaluate dry eye symptoms and associated risk factors. Sampled size calculation with a power of 80% and a 95% degree of confidence suggested the inclusion of 298 participants.ResultsWe studied 304 subjects (149 construction workers and 155 office workers). More than half (55%) of the participants presented dry eye symptoms (OSDI > 12). The average OSDI score was 21.30 ± 22.20 points, being lower in the group of construction workers (12.45 ± 17.50) than in-office workers (28.51 ± 22.99) (p < 0.001). Considering participants who had moderate and severe symptoms (23 to 100 points in OSDI), office workers presented dry eye symptoms 4.15 times more frequently than construction workers (OR 4.15, 95% CI 2.52, 6.85). Women presented statistical evidence of higher OSDI scores than men (32.47 ± 23.72 vs. 14.87 ± 18.48, respectively).Conclusionsconstruction workers have four times less risk of presenting dry eye symptoms than people working in the average office space. This highlights the pernicious effects on the ocular surface of the office environment, which poses a significant risk for the development or worsening of dry eye symptoms.

Individual 3D measurements of end users to personalize work wear clothing

Body silhouette 3D measurements need to be performed separately in each country due to significant ethnic differences in body silhouette which preclude the transfer of European data to particular countries. Systematic research allows to update information on the population body silhouette and body proportions as well as select the size changes possible to implement in clothing construction modifications. The diversity in body silhouettes and sizes as well as the issue of clothing fitting encourage clothing producers to provide work wear clothing based on individual measurements of the end users’ bodies. In the framework of the carried research, the group of construction workers was selected as the target group of the analysed work wear clothing users. 42 construction workers, men only, were measured. The body silhouette measurement process was non-contact and was carried out with the use of 3D body scanner.The collected data on the body silhouette allowed to select sizes used to construct the work wear clothing and identify the clothing size. The selected measurement points of the body silhouette underwent statistical analysis to determine the distribution of random variables, here body sizes. The variables distribution characteristics were calculated. On that basis, the fitting appraisal of work wear clothing with respect to the size of the finished product corresponding to the adequate size of individually measured worker/end user was performed. The size overview of the work wear clothing used by the specific professional group and the appraisal of the size fitting to the body silhouette took into consideration the work wear clothing ergonomic functionality with respect to the body posture when performing the tasks, design and clothing construction. The analysis based on the currently gathered end users’ remarks and objections concerning the clothing fitting and performed body silhouette measurements allows to modify the existing work wear clothing for the selected group of end users. The research was aimed at the improvement of the work wear clothing fitting thanks to personalization based on individual body measurements at the stage of construction design.

Decrease Risk Behavior HIV Infected on Construction Laborers with Behavior Change Communication (BCC) Approach

Introduction: Percentage of HIV-AIDS cases based on the types of work in East Java in 2011 shows that construction workers occupied ranks the top five ranked groups with 249 people (31%) after a group of commercial sex workers (CSWs) group.The purpose of this study was to determine the effectiveness of BCC approach to the reduction of contracting HIV risk behavior in the construction laborers. Method: This study used operational research design. In this study measures the effectiveness of behavior change of construction workers on the prevention of HIV transmission by comparing the behavior of the construction workers before and after the intervention. The subjects of this study were 150 people risk group of construction workers who work and are spread throughout the city of Surabaya. This research was carried out into three phases, namely, phase preintervention research, intervention research, and post-intervention phase of the study. Implemented in the first year and second year praintervensi stage implemented intervention and post-intervention phases. Result: The results of this study showed that 72% of construction workers is productive (18–35 years) and visit his family more than once a month (38%). There is 20% of construction workers had sex with commercial sex workers and no one was using drugs. By 50% of construction workers never get information about HIV/AIDS and as many as 48% never use the services of HIV/AIDS. Discussion: External motivation construction workers associated with the utilization of behavioral HIV/AIDS services with sufficient correlation. Strong external motivation is influenced by risk behaviors of HIV/AIDS were conducted and the desire to get help. Weak external motivation is influenced by a lack of exposure to information related to HIV/AIDS services. The results of the FGD stakeholders have the perception is the same if a construction worker is a high risk group of contracting HIV. Most of the construction workers not have enough knowledge for the prevention of HIV transmission because they do not have access to HIV care and behavior are at risk of contracting HIV by construction workers.Keywords: construction workers, behavior change communication, behavior

CONSTRUCTION WORKERS’ WILLINGNESS TO FOLLOW INDEPENDENT SAFETY INSURANCE BASED ON THEIR SAFETY COMPREHENSION

Construction workers should be protected against the risk of workplace accidents through insurance programs, with premiums paid for by the contractor company they work for. But the fact that there are still many companies that do not provide this protection has led to the idea of independent safety insurance for construction workers. This paper presents the results of a survey of construction workers’ willingness to follow independent safety insurance programs, where they have to pay their own insurance premiums, based on their understanding of the principles of safety. Chi-Squared Automatic Interaction Detector (CHAID) analysis of 151 construction workers surveyed in the city of Bandung, Indonesia, showed that the variable “has implemented Health and Safety” to be a good predictor for their decisions associated with the value of the premium and its coverage. A group of construction workers that tends to follow independent safety insurance program is a group of workers that often implements safety principles when performing work tasks. Meanwhile, workers that stated that they did not implement the safety principles have a tendency not to subscribe to this program. This paper concludes that at least some construction workers are willing to subscribe to the independent safety insurance program and pay premiums comparable to the coverage.

The Korean Valentino: Jin Yan (Kim Yŏm), Sino-Korean Unity, and Shanghai Films of the 1930s

This essay examines the involvement of Korean-born ethnic star Kim Yŏm (Chinese name: Jin Yan) in Shanghai’s left-wing, resistance film movement during the 1930s. In addition to reading Kim’s persona as an ideal screen embodiment of “athletic, modern youth,” which was being promoted by the official screen policy during the Nanjing decade (1927–1937), the author offers a close analytical interpretation of director Sun Yu’s masterpiece The Big Road ( Da Lu , 1934). In this film, Kim plays a revolutionary martyr who leads a group of construction workers building new roads for the Chinese army resisting the invasion of Japanese imperialists. Employing a transnational star studies paradigm, the author interprets The Big Road as an allegory of Sino-Korean unity, one that was founded upon a common resistance against the Japanese Empire at the time of the film’s release.

Allergic contact dermatitis among construction workers detected in a clinic that did not specialize in occupational dermatitis

Contact dermatitis is one of the common work-related dermatoses. Among bricklayers, cement can cause both allergic contact dermatitis and primary contact irritative dermatitis. The personal protective equipment (rubber gloves) may favor the development of allergic contact dermatitis. 1) to evaluate the frequency of allergic contact dermatitis among construction workers between January 2005 and December 2009; 2) to determine the major sensitizing agents in the study group; and 3) to compare the data obtained from the construction workers to that of a group of patients who were not construction workers. A retrospective analysis of patch tests. Patients were separated into two groups: 1) bricklayers and 2) non-bricklayers. Of the 525 patch tests analyzed, 466 (90%) were from non-bricklayers and 53 (10%) from bricklayers. The hands were affected in 38 (61%) of them. 13 patients (24%) had irritative contact dermatitis and 40 (76%) had allergic contact dermatitis. The group of construction workers had a high frequency of sensitization to cement, and 29 (54.7%) had sensitization to rubber vulcanizing agents. 23 patients (43.4%) had sensitization to both cement and rubber. Among the bricklayers the presence of allergic contact dermatitis to rubber and cement in the same patient is common and demonstrates the importance of the patch test.

Hand-arm vibration syndrome among a group of construction workers in Malaysia

ObjectivesTo determine the extent of hand transmitted vibration exposure problems, particularly hand-arm vibration syndrome (HAVS), among construction workers in Malaysia.MethodsA cross-sectional study was conducted on a construction site in Kuala...

Field Evaluation of a Modified Intervention for Overhead Drilling

Drilling holes into concrete or metal ceilings is one of the most physically demanding tasks performed in construction. The work is done overhead with rotary impact hammer drills that weigh up to 40 N. The task is associated with pain and musculoskeletal disorders at the wrist, forearm, shoulder, and back. The mechanism of injury is thought to be the high forces and non-neutral shoulder and wrist postures applied during drilling. Previously, we described a field study of a foot lever and inverted drill press intervention devices that received poor usability ratings compared with the usual method for overhead drilling based on problems with mobility and productivity. Using a participatory intervention model, feedback from construction workers (N = 13) was used to develop a new intervention design that incorporated a wheeled tripod base and a unique method of aligning the drilling column to vertical. A different group of construction workers (N = 23) evaluated usability and fatigue of the new device during their regular overhead drilling in comparison with the usual method. Four of 12 usability ratings were significantly better with the intervention device compared with the usual method. Subjective shoulder fatigue was less with the new intervention (1.1 vs. 3.3; scale 0 to 5; p < 0.001). This difference was supported by objective outcome measures; the mean hand forces during drilling were 26 N with the intervention compared with 245 N with the usual method. The percentage of time with the shoulder flexed or abducted to more than 60 degrees was less with the intervention compared with the usual method (21 vs. 40%; p = 0.007). There was significantly less head extension with the intervention compared with the usual method. There were no significant differences in overall productivity between the two methods. This study demonstrates that a new intervention device for overhead drilling has improved usability and subjective fatigue ratings compared with the usual method. These improvements are most likely due to the reduced hand forces, reduced shoulder abduction and flexion, and reduced drilling time.

Building‐Site Camps and Extended Work Hours: A Two‐Week Monitoring of Self‐Reported Physical Exertion, Fatigue, and Daytime Sleepiness

Large‐scale construction work often requires people to work longer daily hours and more than the ordinary five days in a row. In order to minimize transportation times and optimize the use of personnel, workers are sometimes asked to live in temporary building‐site camps in the proximity of the work site. However, little is known about the biological and psychological effects of this experience. The objective of the present study was to investigate whether exposure to long work hours and extended workweeks while living in building‐site camps in between work shifts was associated with a build‐up of increased complaints of poor sleep, daytime sleepiness, physical exertion, and fatigue across a two‐week work cycle. Two groups of construction workers were examined. The camp group of 13 participants (mean age: 42±11 S.D. yrs) lived in building‐site camps and worked extended hours (between 07:00 and 18:00 h) and extended workweeks (six days in a row, one day off, five days in a row, nine days off). The home group of 16 participants (mean age 40±9 yrs) worked ordinary hours between 07:00 and 15:00 h and returned home after each workday. Self‐ratings of daytime sleepiness (Karolinska Sleepiness Scale), physical exertion (Borg CR‐10), and mood were obtained six or seven times daily during two workweeks. Fatigue ratings were obtained once daily in the evening, and ratings of sleep disturbances were obtained once daily in the morning with the Karolinska Sleep Diary. Data were evaluated in a repeated measures design. The results showed that both groups reported a similar level of daytime sleepiness, physical exertion, and mood across workdays and time points within a workday (all three‐way interactions had p>0.898). Although the home group reported earlier wake‐up times, the pattern of sleep disturbance ratings across the workdays did not differ between the groups. Both groups reported few sleep disturbances and good mood. However, the camp group reported higher physical exertion already at the start of work and showed a more gentle increase in ratings during the work shift and a smaller decline between the end of work and bedtime. The camp group also reported higher fatigue scores than the home group. However, none of the groups showed signs of increasing ratings in the progress of the two workweeks. For both groups, the ratings of daytime sleepiness formed a U‐shaped pattern, with the highest scores at awakening and at bedtime. Yet, the camp group reported higher daytime sleepiness than the home group at lunch break and at the second break in the afternoon. In conclusion, there were no signs of fatigue build‐up or accumulation of daytime sleepiness, physical exertion, or sleep disturbances in either group. Despite the fact that the camp group showed some signs of having trouble in recuperating in between work shifts, as indicated by the higher physical exertion ratings at the start of work, higher fatigue scores, and higher daytime sleepiness, the results constitute no real foundation for altering the camp group's current work schedule and living arrangements.

Factor Replication of the Reduced Laffrey Health Conception Scale

This study replicated the factor model for the Reduced Laffrey Health Conception Scale (RLHCS), which was originally developed by Laffrey (1986) and reduced by Lusk, Kerr, and Baer (1995). Two independent samples of construction workers (n = 697 and n = 510) were used. The samples were predominately Caucasian males (over 97%), with mean ages of 35 and 38 years, respectively. Principal components factor analysis with direct oblimin rotation and structural equation modeling were used to replicate factors and to test the equality of the three observed covariance matrices (factory workers and two groups of construction workers), respectively. Results replicated the two-factor structure (clinical health and overall wellness) found in the earlier study with factory workers (Lusk et al., 1995) and demonstrated factor invariance across different samples.

Injury severity associated with nonfatal construction falls

This study evaluated injury severity in a group of construction workers who sustained nonfatal falls at work. The sample consisted of 255 adults who were identified from Doctor's First Reports (DFRs) submitted to the California Department of Industrial Relations. For those that fell from heights (n = 195), the mean height of fall was 9.2 feet (SD = 7.1). The mean number of lost work days was 44.3 days (SD = 58.6) and the median was 10 days. Two measures of injury severity were used—the Injury Severity Score and the disability section of the Health Assessment Questionnaire (HAQ). Seventeen participants (7%; 95% CI, 4–10%) were deemed permanently disabled. A simultaneous multiple regression model, using five independent variables, explained approximately 21% of the variance in HAQ scores. Nonunion status and safety climate scores indicating increased risk were positively correlated with higher functional limitation as measured by HAQ scores, as were greater heights and impact on concrete surface. Higher scores on both injury severity measures were significantly and moderately associated with a greater number of days lost from work. These findings suggest that injury severity and permanent disability associated with falls in construction are notable, and identify key target areas for intervention and prevention. Am. J. Ind. Med. 32:647–655, 1997. © 1997 Wiley-Liss, Inc.

Injury severity associated with nonfatal construction falls.

This study evaluated injury severity in a group of construction workers who sustained nonfatal falls at work. The sample consisted of 255 adults who were identified from Doctor's First Reports (DFRs) submitted to the California Department of Industrial Relations. For those that fell from heights (n = 195), the mean height of fall was 9.2 feet (SD = 7.1). The mean number of lost work days was 44.3 days (SD = 58.6) and the median was 10 days. Two measures of injury severity were used--the Injury Severity Score and the disability section of the Health Assessment Questionnaire (HAQ). Seventeen participants (7%; 95% CI, 4-10%) were deemed permanently disabled. A simultaneous multiple regression model, using five independent variables, explained approximately 21% of the variance in HAQ scores. Nonunion status and safety climate scores indicating increased risk were positively correlated with higher functional limitation as measured by HAQ scores, as were greater heights and impact on concrete surface. Higher scores on both injury severity measures were significantly and moderately associated with a greater number of days lost from work. These findings suggest that injury severity and permanent disability associated with falls in construction are notable, and identify key target areas for intervention and prevention.

Low back strain in Danish semi-skilled construction work

Danish semi-skilled construction workers (SC-workers) perform a variety of tasks in building construction, civil engineering and rebuilding. A previous epidemiologic study indicated a high occurrence of low back pain (LBP) among these worksers. The study was designed to quantify the major occupational risk factors associated with the development of LBP, i e, inclined postures, repetitive movements, heavy lifts, pushing/pulling motions, sudden unexpected strains and whole body vibrations in this group of construction workers. Firstly a study of occupational activity of 112 SC-workers on height construction sites during two separate five-days periods was carried out. This was followed by an observational study of the nine work tasks most common to SC-workers. Heavy lifts, pushing/pullin motions and sudden unexpected strain occurred most frequently in the work, while inclined postures, repetitive movements and whole body vibrations characterised different parts of the work. Assessments of the strain were made on the basis of techniques given in the literature.

Noise exposure and hearing levels of workers in the sheet metal construction trade.

Hearing and noise levels were measured at a jobsite involving sheet metal construction work and at a sheet metal fabrication shop. Noise levels up to 114 dBA (slow response) were measured when various powered hand tools were used. Noise levels exceeded 85 dBA between one-fourth and one-third of the time. Impact noise levels averaged about 120-125 dB peak SPL. Audiometric examinations showed that this group of construction workers had hearing losses, with the majority of the loss occurring in the 3KH(Z) to 6 KH(Z) range. In addition the loss became more severe with increasing age. Temporary threshold shifts were observed both on the jobsite and in the shop after a single eight-hour exposure.