One-Hour Ergonomics Lesson Transforms Office Workers’ Habits in Three Months

A single hour of health education may be enough to reshape how office workers sit, type, and move at their desks, according to a randomized controlled trial conducted at Menoufia University’s Faculty of Medicine in Egypt. The study, published in BMC Public Health, followed 230 administrative office workers for three months and found that those who attended a one-hour interactive ergonomics session scored dramatically higher on knowledge, attitude, and practice measures than colleagues who received no training. With musculoskeletal disorders affecting an estimated 1.71 billion people worldwide according to the World Health Organization, the findings suggest that a cheap, scalable educational intervention could meaningfully reduce one of the most common occupational health burdens of the modern desk-based workplace.

The research team, led by Faten Ezzelarab Younis and colleagues in the Department of Public Health and Community Medicine, recruited all eligible full-time office workers performing desk-based administrative work at the faculty. Participants ranged in age from 26 to 59, with a mean age of 40.4 years, and nearly 59 percent were women. Most used computers in their daily work, with a median of 17.5 hours of computer use per week, and the median length of employment was twelve years. After applying inclusion and exclusion criteria, 230 workers were randomized equally into an intervention group and a control group, with 115 participants in each arm. Randomization was performed using a computer-generated list in which odd identification numbers went to the intervention group and even numbers to the control group.

The researchers measured outcomes using a validated knowledge, attitude, and practice questionnaire on office ergonomics, administered through face-to-face interviews in Arabic, the native language of all participants. The knowledge section contained ten questions covering the concept of ergonomics, symptoms and risk factors of musculoskeletal disorders, proper workstation setup, correct body posture, and preventive measures, scored on a four-point scale for a total ranging from 10 to 40. The attitude section included sixteen items rated on a five-point agreement scale, with total scores from 16 to 80, where lower scores indicated a more positive attitude. The practice component comprised five items about daily work habits such as twisting, bending, and repetitive tasks, scored so that higher totals reflected better practice. The questionnaire’s internal consistency was acceptable to good, with Cronbach’s alpha values of 0.67, 0.78, and 0.81 for the knowledge, attitude, and practice sections respectively.

The intervention itself was deliberately simple. Immediately after completing the baseline questionnaire, the intervention group attended a one-hour health education session delivered by the research team using a PowerPoint presentation with a computer and projector. The educational content, developed by the authors based on current ergonomic guidelines and relevant literature, covered the concept and importance of office ergonomics, risk factors and symptoms of musculoskeletal disorders, correct workstation setup, proper sitting posture, monitor, keyboard, and chair adjustment, the value of regular breaks and position changes, stretching exercises, and recommended ergonomic practices. Participants were encouraged to ask questions and discuss practical applications throughout the session. The control group received only the questionnaires, at baseline and again three months later, with no educational component in between.

Three months after the intervention, the differences between the groups were striking. The intervention group’s mean knowledge score rose from 30.6 at baseline to 37.2 at follow-up, while the control group remained essentially unchanged at 30.9. The attitude score of the trained group improved from 28.6 to 23.4, reflecting a more positive stance, whereas the control group’s score stayed near 28.3. Most notably, the practice score of the intervention group climbed from 10.4 to 17.0, while the control group’s practice score barely moved from 10.1 to 10.3. All between-group and within-group differences in the intervention arm were statistically significant, while the control group showed no meaningful change on any measure over the same period.

The trial also revealed a moderate but statistically significant positive correlation between knowledge and practice scores within the intervention group after follow-up, with a Pearson correlation coefficient of 0.469. No such correlation appeared in the control group, where the coefficient was a negligible 0.059. The authors interpret this as evidence that increased knowledge may contribute to improved ergonomic practices that help prevent repetitive strain injuries, though they caution that the moderate magnitude of the correlation indicates other factors, such as workplace culture, management support, and organizational commitment to ergonomics, likely also shape whether workers translate what they know into what they actually do at their desks.

Using binary logistic regression, the team identified several predictors of adequate knowledge and favorable practice within the intervention group. Younger workers were substantially more likely to achieve adequate knowledge and favorable practice, with adjusted odds ratios of 7.8 and 10.7 respectively. Higher education levels predicted both outcomes, with adjusted odds ratios of 8.9 for knowledge and 2.5 for practice. Computer use, long hours spent working on a computer, and shorter job duration were also significant predictors, with short work duration showing an adjusted odds ratio of 12.3 for favorable practice. Urban residence additionally predicted adequate knowledge. Interestingly, although attitude scores improved significantly after the intervention, none of the sociodemographic or occupational variables were significantly associated with a positive attitude in the adjusted model, which the authors attribute to the complex influence of beliefs, values, and motivation on attitudes rather than demographic traits alone.

The results align with a growing international body of evidence on ergonomic education. A cluster randomized trial in Nigeria previously showed that a one-day health education program improved the knowledge, attitudes, and workplace safety practices of 247 administrative staff at one and three months of follow-up. An Iranian study using lectures and posture training over eight weekly sessions demonstrated significant improvements in awareness, attitude, and practice among 180 office workers, and another Iranian intervention based on the Health Promotion Model improved workers’ ergonomic behavior. In the United States, research found that office workers’ ergonomics knowledge scores increased by nearly 30 percent after training, particularly when printed guidelines and follow-up email reminders helped workers modify their workspaces. Studies among multinational corporate employees have even found that a 40-minute lecture or a 10-minute live workstation demonstration can improve knowledge and change behavior.

The trial was not without limitations, and the authors are careful to frame their conclusions accordingly. The sample size was relatively modest, the three-month follow-up cannot establish whether the benefits persist over the long term, and the single-employment-site design may limit generalizability to workplaces with different organizational cultures, resources, or occupational health policies. Blinding was not feasible because participants and researchers necessarily knew who received the educational session. Thirteen participants withdrew during follow-up, leaving 217 in the final analysis, 108 in the intervention group and 109 in the control group. The study was retrospectively registered at the Pan African Clinical Trial Registry, a detail that trial methodology specialists typically weigh when interpreting randomized evidence.

Even with those caveats, the practical implications are considerable. The authors argue that incorporating health education on office ergonomics into workplace health promotion programs can improve workers’ well-being, productivity, and quality of life while lowering absenteeism and the associated economic burden. Organizations, they suggest, should provide regular ergonomics training sessions, promote appropriate workstation adjustments, encourage periodic breaks and stretching exercises, and integrate ergonomic education into occupational health and safety policies. Because older and less educated workers were less likely to benefit, the researchers call for future interventions to specifically target these higher-risk groups, and for studies with follow-up periods of six months to a year to determine whether a single hour of instruction can produce lasting change, or whether periodic refresher training is needed to keep healthy habits alive at the desk.

Subject of Research: Effect of a health education intervention on office ergonomics knowledge, attitude, and practice among office workers

Article Title: The impact of health education intervention on knowledge, attitude, and practice of office workers about office ergonomics: a randomized controlled trial

Article References: Younis, F. E., Abdelwanees, S., Abdel-Monaem, A. M., & Yaihya Abdel-Raouf, S. (2026). The impact of health education intervention on knowledge, attitude, and practice of office workers about office ergonomics: a randomized controlled trial. BMC Public Health, 26(1), Article 2847. https://doi.org/10.1186/s12889-026-29505-4

Image Credits: AI Generated

DOI: 10.1186/s12889-026-29505-4

Keywords: ergonomics, health education, office workers, musculoskeletal disorders, randomized controlled trial, occupational health, KAP questionnaire, workplace safety, posture, public health, Egypt, health promotion