Investigating obesity among professional drivers: the high risk professional driver study

Feasibility of a Capacity Building Organizational Intervention for Worker Safety and Well-being in the Transportation Industry: Pivoting to Address the COVID-19 Pandemic and Social and Political Unrest in Chile

OBJECTIVE

This study developed, implemented, and evaluated the feasibility of executing an organizational capacity building intervention to improve bus driver safety and well-being in a Chilean transportation company. Method: Through an implementation science lens and using a pre-experimental mixed methods study design, we assessed the feasibility of implementing a participatory organizational intervention designed to build organizational capacity. Result: We identified contextual factors that influenced the intervention mechanisms and intervention implementation and describe how the company adapted the approach for unexpected external factors during the COVID-19 pandemic and social and political unrest experienced in Chile. Conclusions: The intervention enabled the organization to create an agile organizational infrastructure that provided the organization's leadership with new ways to be nimbler and more responsive to workers' safety and well-being needs and was robust in responding to strong external forces that were undermining worker safety and well-being.

The necessity of improving cardiovascular health in commercial motor vehicle drivers

Commercial motor vehicle (CMV) drivers have an increased risk for cardiometabolic risk factors and higher rates of cardiovascular disease relative to the general population. Lifestyle factors, including the sedentary nature of driving and lack of access to healthy foods, contribute to the disproportionately high cardiovascular disease (CVD) risk among commercial vehicle (CMV) drivers. Occupational physicals represent an important opportunity to reach populations with a high prevalence and incidence of coronary artery disease who may not otherwise seek preventive care. These visits are an opportunity to discuss primary and secondary prevention, including lifestyle topics such as diet and exercise, and potentially recommend or implement preventive medical therapy when indicated. Future iterations of licensing guidelines for drivers should seek to incorporate updated recommendations regarding diet, physical activity, and preventive pharmacologic therapies.

Cardiovascular risk in high-hazard occupations: the role of occupational cardiology

Work is beneficial for health, but many individuals develop cardiovascular disease (CVD) during their working lives. Occupational cardiology is an emerging field that combines traditional cardiology sub-specialisms with prevention and risk management unique to specific employment characteristics and conditions. In some occupational settings incapacitation through CVD has the potential to be catastrophic due to the nature of work and/or the working environment. These are often termed 'hazardous' or 'high-hazard' occupations. Consequently, many organizations that employ individuals in high-hazard roles undertake pre-employment medicals and periodic medical examinations to screen for CVD. The identification of CVD that exceeds predefined employer (or regulatory body) risk thresholds can result in occupational restriction, or disqualification, which may be temporary or permanent. This article will review the evidence related to occupational cardiology for several high-hazard occupations related to aviation and space, diving, high altitude, emergency workers, commercial transportation, and the military. The article will focus on environmental risk, screening, surveillance, and risk management for the prevention of events precipitated by CVD. Occupational cardiology is a challenging field that requires a broad understanding of general cardiology, environmental, and occupational medicine principles. There is a current lack of consensus and contemporary evidence which requires further research. Provision of evidence-based, but individualized, risk stratification and treatment plans is required from specialists that understand the complex interaction between work and the cardiovascular system. There is a current lack of consensus and contemporary evidence in occupational cardiology and further research is required.

Working Conditions Influencing Drivers' Safety and Well-Being in the Transportation Industry: "On Board" Program

The conditions of work for professional drivers can contribute to adverse health and well-being outcomes. Fatigue can result from irregular shift scheduling, stress may arise due to the intense job demands, back pain may be due to prolonged sitting and exposure to vibration, and a poor diet can be attributed to limited time for breaks and rest. This study aimed to identify working conditions and health outcomes in a bussing company by conducting focus groups and key informant interviews to inform a Total Worker Health^® organizational intervention. Our thematic analysis identified three primary themes: lack of trust between drivers and supervisors, the scheduling of shifts and routes, and difficulty performing positive health behaviors. These findings demonstrate the value of using participatory methods with key stakeholders to determine the unique working conditions and pathways that may be most critical to impacting safety, health, and well-being in an organization.

Australian bus drivers' modifiable and contextual risk factors for chronic disease: A workplace study

INTRODUCTION

Little is known about workplace health promotion for bus drivers. Bus drivers are at-risk of chronic disease because they are exposed to the risk factor combination of poor nutrition, low levels of physical activity, high levels of sedentary time and are often overweight or obese. The purpose of this paper is to situate the quantitative baseline data collected from bus drivers within qualitative findings about the socio-cultural context of the workplace.

MATERIALS AND METHODS

Baseline data about physical activity, dietary intake and sedentary hours was collected from 58 drivers employed by a large bus company in southeast Queensland. Ten drivers and seven key workplace informants participated in interviews and discussion groups about driver health behaviours, workplace structure, culture, and resources.

RESULTS

The quantitative results of our study reveal bus drivers have a cluster of poor health behaviours-limited physical activity, lower than recommended consumption of fruit and vegetables and high levels of sitting time during working-hours-which contribute to a high prevalence of overweight and obesity and a heightened risk of chronic disease. The qualitative findings suggest there are individual and structural barriers to improving drivers' modifiable health behaviours. Individual barriers include ingrained poor habits and more pressing life concerns, while structural barriers in the context of the workplace include time constraints, shift work, long days, a lack of work amenities and a general disconnect of drivers with their workplace.

CONCLUSION

In this workplace, health promotion strategies for bus drivers should be prioritised as a means of improving drivers' health. To maximise uptake and effectiveness, these strategies should make use of existing workplace resources and consider the context of workplace health behaviour change. Further research is warranted in a broader sample of Australian bus companies to explore the context of workplace health behavior change so targeted strategies to improve bus drivers' health can be developed.

Cardiometabolic risk factors and mental health status among truck drivers: a systematic review

OBJECTIVE

This study aimed to systematically review and summarise the literature on cardiometabolic risk factors, lifestyle health behaviours and mental health status of truck drivers globally to ascertain the scale of these health concerns.

DESIGN

Systematic review reported using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.

DATA SOURCES

PubMed, Scopus, PsycINFO and Web of Science were searched in January 2019 and updated in January 2020, from the date of inception to 16 January 2020.

ELIGIBILITY CRITERIA FOR SELECTING STUDIES

Papers were included if they (1) reported independent data on truck drivers, (2) included quantitative data on outcomes related to cardiometabolic markers of health, mental health and/or health behaviours, (3) were written in English and (4) were published in a peer-reviewed journal. Grey literature was ineligible for this review.

DATA EXTRACTION AND SYNTHESIS

One reviewer independently extracted data and assessed methodological quality using a checklist based on the National Heart, Lung and Blood Institute Quality Assessment tool. 20% were independently assessed for eligibility and quality by a second reviewer. Due to heterogeneity of the outcomes, results were narratively presented.

RESULTS

3601 titles and abstracts were screened. Seventy-three studies met the inclusion criteria. Truck driving is associated with enforced sedentarism, long and irregular working hours, lack of healthy foods, social isolation and chronic time pressures. Strong evidence was observed for truck drivers to generally exhibit poor cardiometabolic risk profiles including overweight and obesity, hypertension, hypercholesterolaemia, high blood glucose, poor mental health and cigarette smoking.

CONCLUSIONS

Improving truck driver health is vital for the longevity of the trucking industry, and for the safety of all road users. The workplace plays a vital role in truck driver health; policies, regulations and procedures are required to address this health crisis.

PROSPERO REGISTRATION NUMBER

CRD42019124499.

Cardiovascular Risk in Women Deprived of Freedom from a Public Prison in Mato Grosso, Brazil

INTRODUCTION

Cardiovascular diseases occur worldwide and have progressively affected the female sex, without distinction of life context; however, the prison environment may intensify the risk of developing them.

AIM

To evaluate the cardiovascular risk in women deprived of freedom from a public prison in Mato Grosso, Brazil.

METHODS

This is a quantitative, cross-sectional and analytical study performed with all incarcerated women from the prison institution in the second half of the years 2016, 2017 and 2018, through a structured questionnaire and statistical analysis through the RStudio.

RESULTS

The results showed that, although participants presented low cardiovascular risk, the BMI values pointed to overweight in all the years analyzed, in addition to the waist-to-height ratio, conicity index, waist circumference and waist-hip ratio presenting similar means or that transcend the established cutoff point. There was an association between the anthropometric variables and age, conjugal status, education, alcoholism, systolic blood pressure, metabolic complications, sleep and a family history of non-communicable chronic diseases. The BMI variable showed association with all anthropometric variables related to cardiovascular risk, except to WHR.

CONCLUSION

When considering the ambience factor, modifiable risk factors may negatively influence the long-term health of these women, particularly in relation to the cardiovascular system. The found scenario, in relation to the cardiovascular risk, points to the need for interventions, regarding the clinical condition and life-styles adopted by this population.

Prevalence and lifestyle-related risk factors of obesity and unrecognized hypertension among bus drivers in Ghana

Obesity and hypertension are public health problems associated with cardiovascular events worldwide. Bus drivers, whose lifestyle is primarily sedentary and characterized by poor eating habits are at increased risk. This study determined the prevalence and lifestyle-related risk factors of obesity and hypertension among Inter-Regional Metromass Bus Drivers (IRMBDs) in Ghana. This cross-sectional study recruited 527 professional drivers from Metromass Bus stations in Accra and Kumasi Metropolis, Ghana. Structured questionnaires were administered to obtain socio-demographic and lifestyle characteristics from all participants. Anthropometric measurements including body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR) and blood pressure (BP) were determined. The prevalence of unrecognized hypertension was 38.7%. The prevalence of obesity using BMI, WC, and WHR as obesity indices were 19.0%, 19.9%, and 19.4%, respectively. Use of sleep inhibitors, long-duration sitting and eating late at night were independent risk factors for obesity, regardless of the obesity index used (p < 0.05). Physical inactivity, high caloric intake and eating at stressful periods were independent risk factors for obesity based on WC and WHR measurements (p < 0.05). Ageing, smoking history, alcoholic beverage intake, sleep inhibitor drug use, high calorie intake, long-duration sitting, eating late and under stressful conditions were independent risk factors for hypertension (p < 0.05). There is a high prevalence of unrecognized hypertension and obesity among IRMBDs which were associated with individual lifestyle and behaviours. Increased awareness through educational and screening programs will trigger lifestyle modifications that will reduce cardio-metabolic disease onset and offer clues for better disease predictive, preventive and personalized medicine.

Overweight, underweight, and obesity among male long-distance professional drivers in Iran

OBJECTIVE

Long-distance professional drivers, as an occupational group, are hypothesized to have a higher risk of overweight and obesity. The aim of this study was to estimate the prevalence and risk factors of overweight, underweight, and obesity in long-distance professional drivers.

METHODS

A cross-sectional study was conducted on 36 625 male long-distance professional drivers age ≥20 years, from April 2013 to Sept. 2016. Drivers were interviewed and underwent clinical and laboratory examinations including measures of blood pressure (BP), blood tests, anthropometric data, and visual and hearing acuity. The mean (standard deviation [SD]) age of participants was 41.9 (10.2) years with a mean (SD) duration of a professional driving of 15.3 (9.6) years and mean (SD) body mass index (BMI) was 25.7 (4.0) kg/m2 .

RESULTS

The prevalence of overweight and obesity was 39.1% (95% confidence interval (CI) 38.6, 39.6) and 10.8% (95% CI 10.5, 11.1), respectively. A total percentage of 2.7 (95% CI 2.5, 2.9) were underweight. A total percentage of 10.6 had BMI 30-40 kg/m2 and 0.2% had BMI ≥40 kg/m2 . Using a stepwise binary logistic regression model for overweight, underweight, and obesity, age had a significant independent relationship with underweight, overweight, and obesity. Duration of work, BP, fasting plasma glucose, triglyceride, and cholesterol had significant independent positive association and smoking had a negative association with overweight/obesity when other covariates were considered.

CONCLUSIONS

These findings indicate that overweight and obesity are prevalent among long-distance professional drivers in Iran and appears to be similar to the general population.

The Burden of Overweight and Obesity among Long-Distance Truckers in Ethiopia

BACKGROUND

Abnormal body mass index (BMI ≥ 25 kg/m²) has become a major global public health problem which is rising at a faster rate in urban areas of low- and middle-income countries. In Ethiopia, the prevalence gradually increases. Long-distance truckers are at a high risk of developing overweight or obesity due to the sedentary nature of their job. Despite these populations at a high risk of developing overweight/obesity such as drivers elsewhere, pieces of data that showed the prevalence and contributing factors of overweight and obesity among long-distance truckers in Ethiopia are not yet available.

OBJECTIVE

To assess the prevalence and contributing factors of overweight and obesity among long-distance truckers in Ethiopia.

METHODS

A cross-sectional study was conducted among 400 systematically selected truckers at Modjo dry port in Ethiopia from February to March, 2018. Data were collected through face-to-face interviews using a structured questionnaire. The final results were presented in tables and numerical summary measures such as mean and standard deviation (SD).

RESULTS

Of the 400 truckers interviewed, the prevalence of overweight and obesity was 56.5%, 95% CI (51.6%-61.4%). The study also found that a monthly income ≥220 USD (AOR = 1.83, 95% CI (1.05-3.18)), having 3 or more family sizes (AOR = 2.24, 95% CI (1.15-4.36)), less than 6 hours of sleep at night (AOR = 3.34, 95% CI (1.99-5.78)), driving for 9 or more hours daily (AOR = 2.29, 95% CI (1.09-4.81)), and a truck driving experience of 10 or more years (AOR = 2.13, 95% CI (1.29-4.18)) were significantly associated with overweight and obesity.

CONCLUSION

The prevalence of overweight and obesity was substantially high. The study also found that sociodemographic and occupational factors are mainly associated with overweight and obesity. Therefore, a health education program should be designed for awareness creation on the importance of reducing a sedentary lifestyle, consuming healthy foods or drinks, and having regular physical exercise to mitigate the problem.

Factors associated with obesity in urban collective transportation workers of the Metropolitan Region of Belo Horizonte, Minas Gerais, Brazil

OBJECTIVE

To analyze the demographic, behavioral and occupational factors associated with obesity among urban collective transportation workers of the Metropolitan Region of Belo Horizonte, Minas Gerais State, Brazil.

METHOD

This is a cross-sectional study conducted with 1,448 drivers and collectors in the Metropolitan Region of Belo Horizonte. Anthropometric, demographic, behavioral data, as well as participants' link to the company and bus conditions were gathered in 2012 through a questionnaire applied by an interviewer. To calculate obesity, the body mass index cut off point was ≥ 30 kg/m2. Prevalence ratios (PR) and respective 95% confidence intervals (95%CI) were adjusted by Poisson's multivariate regression.

RESULTS

The prevalence of obesity among urban collective transportation workers was 16.1%. Female sex (PR = 1.84; 95%CI 1.37 - 2.49), aging 30 to 39 years old (PR = 1.66; 95%CI 1.17 - 2.37) and 40 to 49 years old (PR = 1.59; 95%CI 1.04 - 2.42), being in the same job role from 5.01 to 10 years (PR = 1.52; 95%CI 1.04 - 2,42) and from 20.01 to 47 years (PR = 1.90; 95%CI 1.21 - 3.00), and physical inactivity (PR = 1.32; 95%CI 1.01 - 1.73) remained independently associated with obesity after multivariate adjustment data.

CONCLUSION

These findings highlight the need to consider actions that encourage employees to participate in healthy activities when discussing health promotion for public transport workers, as well as actions to improve the organization and management of work, so it becomes a health and well-being feature for this population.

Convenience Behavior and Being Overweight in Adults: Development and Validation of the Convenience Behavior Questionnaire

The etiology of overweight and obesity is a mixture of genetic determinants, environmental factors, and health behaviors. Especially intra- and interpersonal inactive behaviors, here termed convenience, seems to play an important role. The objective was to develop and validate the Convenience Behavior Questionnaire (CBQ) to assess convenience-related items and their association with overweight and obesity in a large population. A sample of 1233 subjects aged 18–82 years from six population groups took part in a self-administered questionnaire. Test-retest reliability was estimated and the independent association between convenience-related items and overweight and obesity was investigated. Principal component analysis revealed three factors (avoidance behaviors, social interaction behaviors and domestic environmental factors) which explained 43.4% of the variance contributing to the CBQ. Cronbach's α ranged from 0.80–0.89. Test-retest reliability using intra-class correlation was acceptable ≥ 0.70. Forward stepwise logistic regression analysis, including gender, education level, age and TV viewing on weekends showed a positive relation of convenience behavior and overweight (OR: 1.40; 95% CI: 1.01–1.96; P = 0.048), while physical activity status was not significantly associated with overweight (OR: 1.09; 95% CI: 0.77–1.54; P = 0.629). The CBQ seems to be a reliable tool which considers non-traditional behaviors related to overweight development. Interestingly our findings revealed a better relationship between convenience-related behavior with overweight and obesity than the habitual physical activity score.

To what extent do education and physical work load factors explain occupational differences in disability retirement due to knee OA? A nationwide register-based study in Finland

OBJECTIVES

To examine the association of education and physical work load factors on the occupational differences in disability retirement due to knee osteoarthritis (OA).

DESIGN

Longitudinal study.

SETTING

Linkage of several nationwide registers and a job exposure matrix in Finland.

PARTICIPANTS

A total of 1 135 654 Finns aged 30-60 years in gainful employment were followed from 2005 to 2013 for full disability retirement due to knee OA.

PRIMARY AND SECONDARY OUTCOME MEASURES

We calculated age-adjusted incidence rates and examined the association of occupation, education and physical work load factors with disability retirement using competing risk regression model. Disability retirement due to other causes than knee OA, old-age retirement and death were treated as competing risk.

RESULTS

A total of 6117 persons had disability retirement due to knee OA. Women had a higher age-adjusted incidence rate than men (72 vs 60 per 100 000 person-years, respectively). In men, a very high risk of disability retirement was found among construction workers, electricians and plumbers (HR 16.6, 95% CI 12.5 to 22.2), service workers (HR 12.7, 95% CI 9.2 to 17.4) and in women among building caretakers, cleaners, assistant nurses and kitchen workers (HR 15.5, 95% CI 11.7 to 20.6), as compared with professionals. The observed occupational differences were largely explained by educational level and noticeably mediated by physical work load factors in both genders.

CONCLUSION

Our observational study suggests that the risk of disability retirement among manual workers is strongly attributed to the physically heavy work.

Conductores profesionales y conductores particulares bogotanos: Diagnóstico de condiciones sociodemográficas y de bienestar general [análisis exploratorio]

A pesar de que los accidentes de tráfico son reconocidos mundialmente como un problema de salud pública y que en Colombia representan la segunda causa de muerte violenta, hay una falta de investigación en torno al tema, hecho que señala la importancia de iniciar acciones concretas. En consonancia con lo anterior, el objetivo de la presente investigación fue estudiar dos tipos de población de conductores, un sable, conductores profesionales y particulares en la ciudad de Bogotá, mediante un análisis y comparación de su situación sociodemográfica y de salud general. Con tales fines, una investigación de corte transversal  fue llevada a cabo, en la que participaron 500 conductores (250 profesionales y 250particulares) colombianos entre los 16 y los 72 años de edad. Los resultados revelan que los conductores profesionales tienen más edad, más experiencia de conducción, ingresos salariales inferiores, menores niveles educativos y reportan un mayor número de accidentes en comparación con los conductores particulares. Por su parte, los conductores particulares presentan peores índices de salud, bienestar y menos habilidades en la conducción. Estos hallazgos indican tendencias sociodemográficas y reportadas en la literatura para los conductores profesionales, pero divergen en cuanto a salud y bienestar. En conclusión, se requieren más estudios para aumentar el conocimiento sobre las diferencias entre los tipos de conductores y sobre el papel de los factores de riesgo y de protección con relación a la accidentalidad vial, con miras a su prevención y reducción.

The Work Organization of Long-Haul Truck Drivers and the Association With Body Mass Index

OBJECTIVE

The aim of this study was to examine relationships between work organization features of work hours, work schedules, and job stress with body mass indexes (BMIs) of long-haul truck drivers.

METHODS

Face-to-face survey data were collected first, followed by collection of anthropometric measures including height and weight (n = 260). Logistic regression (backward stepwise model) was used to identify significant predictors of BMI and to analyze odds ratios.

RESULTS

Mean BMI was 33.40 kg/m(2), with 64.2% obese (BMI > 30 kg/m(2)) and 18.4% extreme/morbidly obese (BMI > 40 kg/m(2)). Working more than 11 daily hours was associated with statistically significant increased odds for being extreme obese.

CONCLUSION

Findings suggest that longer work hours (>11 hours daily) have a major influence on odds for obesity among this population. The results align with recent NIOSH calls for integrated approaches to worker health.

Postural sway, working years and BMI in healthy truck drivers: an observational study

OBJECTIVES

The following study analyses the influence of risk factors among the occupational group of truck drivers on postural control and body mass index (BMI).

DESIGN

Observational study.

SETTING

One motorway station close to several highways in Germany.

PARTICIPANTS

180 truck drivers (177 male/3 female), aged 21-65 years old, took part in this study.

OUTCOME MEASURES

Postural control was examined using a pressure plate. In order to examine the influence of body weight (BMI) and working years on postural control, subjects were divided into samples of five and three groups, respectively. Furthermore, it was evaluated whether the subjects suffered from back pain. For data analysis, the Kruskal-Wallis test was used as the data were not normally distributed. Once the p value of the Kruskal-Wallis test was p≤0.05, the Conover-Iman comparison and afterwards the Bonferroni-Holm correction were used. The significance level was set at α ≤0.05.

RESULTS

Regarding the number of working years, a significant increase of frontal (p≤0.04) and sagittal (p≤0.001) sway were observed. The correlation of the five BMI groups with the number of working years demonstrates that an increase of the working years leads to an increase of BMI (p≤0.03). Furthermore, the majority of truck drivers participating in this study suffered from back pain (61.7%).

CONCLUSIONS

BMI and musculoskeletal impairment are indicators of health risk factors. In this study, it is shown that an increasing number of working years and an increasing BMI lead to a decrease in frontal and sagittal postural sway. In addition, the number of working years correlates with body weight and back pain.

The impact of an m-Health financial incentives program on the physical activity and diet of Australian truck drivers

Background

Chronic diseases are high in truck drivers and have been linked to work routines that promote inactivity and poor diets. This feasibility study examined the extent to which an m-Health financial incentives program facilitated physical activity and healthy dietary choices in Australian truck drivers.

Methods

Nineteen men (mean [SD] age = 47.5 [9.8] years; BMI = 31.2 [4.6] kg/m²) completed the 20-week program, and used an activity tracker and smartphone application (Jawbone UP™) to regulate small positive changes in occupational physical activity, and fruit, vegetable, saturated fat and processed/refined sugar food/beverage choices. Measures (baseline, end-program, 2-months follow-up; April–December 2014) were accelerometer-determined proportions of work time spent physically active, and a workday dietary questionnaire. Statistical (repeated measures ANOVA) and thematic (interviews) analyses assessed program impact.

Results

Non-significant increases in the mean proportions of work time spent physically active were found at end-program and follow-up (+1%; 7 mins/day). Fruit (p = 0.023) and vegetable (p = 0.024) consumption significantly increased by one serve/day at end-program. Non-significant improvements in saturated fat (5%) and processed/refined sugar (1%) food/beverage choices were found at end-program and follow-up. Overall, 65% (n = 11) of drivers demonstrated positive changes in physical activity, and at least one dietary choice (e.g. saturated fat) at follow-up. Drivers found the financial incentives component of the program to be a less effective facilitator of change than the activity tracker and smartphone application, although this technology was easier to use for monitoring of physical activity than healthy dietary choices.

Conclusions

Not all drivers benefitted from the program. However, positive changes for different health behaviours were observed in the majority of participants. Outcomes from this feasibility study inform future intervention development for studies with larger samples.

Trial registration

ANZCTR12616001513404. Registered November 2nd, 2016 (retrospectively registered).

A socioecological framework for research on work and obesity in diverse urban transit operators based on gender, race, and ethnicity

Urban transit (bus and rail) operators, totaling nearly 700,000 persons, are one of the heaviest occupational groups in the United States (US). Little is known about occupational risk factors for weight gain and obesity and their interrelationship with health-related behaviors, particularly among female minority (African Americans and Hispanics) transit operators who are at greater risk for obesity. As a step towards developing successful obesity interventions among urban transit operators, this paper aims to present a new socioecological framework for studying working conditions, chronic strain, health-related behaviors, weight gain/obesity, and obesity disparity in diverse urban transit operators based on gender, race, and ethnicity. Our framework is a synthesis of several different theories and disciplines: the resource-work load model (work stress), occupational ergonomics, the theory of intersectionality, and worksite health promotion. The framework was developed utilizing an extensive literature review, results from our on-going research on obesity, input from focus groups conducted with Los Angeles transit operators as well as interviews and meetings with transit operator stakeholders (management, unions, and worksite transit wellness program), and ride-along observations. Our hypotheses highlighted in the framework (see Fig. 1) are that adverse working conditions, largely characterized as a combination of high demands and low resources, will increase the risk for weight gain/obesity among transit operators directly through chronic strain and hypothalamic dysfunction (hyper-and hypo-activations), and indirectly through health-related behaviors and injuries/chronic severe pain. We also hypothesize that the observed increase in adiposity among female minority operators is due to their greater exposure to adverse occupational and non-occupational conditions that reflect their intersecting social identities of lower social class and being a minority woman in the US. Our proposed framework could greatly facilitate future transit worksite obesity studies by clarifying the complex and important roles of adverse working conditions in the etiology of weight gain/obesity and obesity disparity among transit operators and other working populations.

Obesity indices are predictive of elevated C-reactive protein in long-haul truck drivers

BACKGROUND

Obesity rates in long-haul truck drivers have been shown to be significantly higher than the general population. We hypothesized that commercial drivers with the highest levels of general obesity and abdominal adiposity would have higher concentrations of high sensitivity C-reactive protein (CRP), a marker of inflammation.

METHODS

Survey and anthropometric data were collected from 262 commercial drivers. Weight, circumference measures, and blood analysis for CRP (N = 115) were conducted and compared to National Health and Nutrition Examination Survey (NHANES) data. CRP values were non-normally distributed and logarithmically transformed for statistical analyses.

RESULTS

BMI, waist circumference, sagittal abdominal diameter, and CRP were significantly higher than in the general population. Anthropometric indices that included height (BMI, waist-to-height ratio, and sagittal diameter-to-height ratio), were most predictive of CRP values.

CONCLUSIONS

Abdominal obesity is prevalent in commercial vehicle drivers and is an important indicator of the presence of inflammation in this population. Am. J. Ind. Med. 59:665-675, 2016. © 2016 Wiley Periodicals, Inc.

Chronic disease risks and use of a smartphone application during a physical activity and dietary intervention in Australian truck drivers

OBJECTIVE

This study examined chronic disease risks and the use of a smartphone activity tracking application during an intervention in Australian truck drivers (April-October 2014).

METHODS

Forty-four men (mean age=47.5 [SD 9.8] years) completed baseline health measures, and were subsequently offered access to a free wrist-worn activity tracker and smartphone application (Jawbone UP) to monitor step counts and dietary choices during a 20-week intervention. Chronic disease risks were evaluated against guidelines; weekly step count and dietary logs registered by drivers in the application were analysed to evaluate use of the Jawbone UP.

RESULTS

Chronic disease risks were high (e.g. 97% high waist circumference [≥ 94 cm]). Eighteen drivers (41%) did not start the intervention; smartphone technical barriers were the main reason for drop out. Across 20-weeks, drivers who used the Jawbone UP logged step counts for an average of 6 [SD 1] days/week; mean step counts remained consistent across the intervention (weeks 1-4=8,743[SD 2,867] steps/day; weeks 17-20=8,994[SD 3,478] steps/day). The median number of dietary logs significantly decreased from start (17 [IQR 38] logs/weeks) to end of the intervention (0 [IQR 23] logs/week; p<0.01); the median proportion of healthy diet choices relative to total diet choices logged increased across the intervention (weeks 1-4=38[IQR 21]%; weeks 17-20=58[IQR 18]%).

CONCLUSIONS

Step counts were more successfully monitored than dietary choices in those drivers who used the Jawbone UP.

IMPLICATIONS

Smartphone technology facilitated active living and healthy dietary choices, but also prohibited intervention engagement in a number of these high-risk Australian truck drivers.