There’s been a lot of interest in the harmful effects of prolonged sitting at work, from academics and the public alike. The attention being paid to sitting — or rather, not sitting — while on the job stems from the scientifically validated message that being sedentary in general, both indoors and outdoors, is bad for your health.

However, comparatively little attention has been devoted to the harmful effects of prolonged standing at work, despite past studies linking it to chronic back pain and musculoskeletal disorders (MSDs) in the lower limbs.

What’s more, research has shown that prolonged standing might increase the risk of cardiovascular disease. That’s because standing too long can result in blood pooling in the legs, increased pressure in the veins, and increased oxidative stress, all of which can contribute to an increased risk.

Prolonged Standing At Work Doubles Heart Disease Risk

We recently published a study that adds to that body of evidence on the adverse health effects of prolonged standing. It compared the risk of heart disease among more than 7,000 workers in Ontario, followed over a 12-year period, across different types of occupations.

Briefly, we grouped the workers into four categories according to the body position of their jobs.

The categories were: workers who mostly sit, workers who mostly stand, workers who use a mix of sitting, standing, and walking, and workers who use other types of body positions, such as crouching or kneeling.

We found that people who primarily stand on the job are twice as likely to develop heart disease as people who primarily sit. This was the case even after taking into account a wide range of factors, including personal factors (including age, gender, education levels, ethnicity, immigrant status, and marital status), health (e.g., diabetes, arthritis, hypertension, mood, and anxiety disorders) and the type of work being performed (e.g., physical demands, shift schedule).

An elevated risk for those who stand at their jobs (compared to sitting) was still present after taking into account smoking, leisure time, physical activity, alcohol consumption, and body mass index.

In fact, the incidence of heart disease among those respondents who stood a lot at work (6.6 percent) was similar to the incidence of heart disease among workers who smoked on a daily basis (5.8 percent) or those who were obese (6.9 percent). This suggests that workplace wellness programs should focus on reducing prolonged standing at work, just as they target smoking and unhealthy diet habits, to curb cardiovascular disease.

Is My Sit/Stand Desk Harmful?

For those who may wonder whether their standing or variable desk is a health risk, the short answer is “No.” The focus of our study was prolonged standing at work, without opportunities to sit. We expect that people using sit/stand desks do sit when they feel tired, unlike those in occupations that require prolonged standing, such as grocery store clerks or line cooks.

The opposite question, “Does standing a little bit more during the day reduce the risk of heart disease?” is harder to answer, and was not specifically examined by our study.

The available research evidence suggests that while being sedentary in general is bad for you, the amount of time we spend sitting at work (distinct from sitting at home, in traffic, and so on) is not strongly linked with decreased risk of long-term conditions such as diabetes or heart disease.

To reduce the potential health impacts of sitting in general, you would likely need changes in overall energy expenditure. And standing a little more throughout the day (without at least walking in addition to standing) probably won’t achieve this.

How Can I Reduce Risk?

Based on our study, and other studies in this area, it would seem wise to focus on ways to reduce standing time in certain occupations. In our study, people whose jobs involve standing for long stretches of time included sales and service workers, cooks, food and beverage servers, and bank tellers.

With the exception of cooks, there aren’t specific reasons why workers in many of these occupations need to stand for prolonged periods of time. Rather, the need to stand in these jobs has more to do with the need to be seen by the public as being attentive, interested, and polite. So most workers could still perform their duties using a mix of sitting and standing.

As a result, greater awareness of the potential health effects of standing too long can help roll back this social expectation.

And luckily for workplaces, in the case of prolonged standing, there are interventions that are known to be effective and readily available: They’re called chairs.

Preventing long-term health conditions such as heart disease likely requires multi-faceted interventions, focusing on factors inside and outside the workplace.

Reducing prolonged standing at work – and providing more flexible work environments in general – should be one of the aspects of work that are considered in the future.

Important Notice: This article was originally published at https://theconversation.com by Peter Smith where all credits are due.

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