Standing offices: the body type decides it burns more energy than sitting



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IIf sitting all day is as terrible for our health as it seems to be, the permanent office is there to protect us from danger. Staying up all day can help the body work harder to avoid some of the costs of the session, but a new analysis published Wednesday in the open access journal PLOS One suggests that some people might benefit more from a standing desk than others.

Everyone uses energy a little differently, but this article shows that when it comes to the transition from sitting to standing, people can be grouped into two categories: spenders and savers. Francisco José Amaro-Gahete, author of a PhD, studied in a sample of 55 "young adults". student at the University of Granada, has shown that spendthrift bodies tend to work much harder when they are standing than compared when they are sitting. Savers, meanwhile, notice either slight changes or no change between sitting and standing.

"Spend" refers to people whose energy expenditure has increased dramatically, for example, more than 5% between two different positions (lying versus sitting or sitting versus standing), and "saver" refers to those who do not. showed no energy expenditure change between two specific positions, "says Amaro-Gahete Reverse.

The vast majority of people in his sample were savers: 81%, to be exact.

standing desk
The "savers" in the Amaro-Gahete study spent less on energy when they moved from sitting to standing compared to "spenders" who found a greater change in energy expenditure.

Amaro-Gahete noted these big differences between savers and spenders when he measured different aspects of energy expenditure, including heart rate and calorie burning, when his participants were lying down, sitting, and standing for 15 minutes. When people were standing, they burned an average of 1.3 calories per minute, compared to about 1.2 while lying down. Of all the measurements taken together, he estimates that standing was associated with an increase of about 10% in energy consumption.

But when he took a closer look at the individuals in his sample, he found that the energy consumption due to standing was increasing dramatically from one person to the other.

"The results of our study suggest that this phenomenon does not occur in all people," he says. And this difference has led to defining these two categories: savers and spenders.

When users switched from sitting to standing, they actually spent 0.8 percent less energy on average. When users switched from sitting to standing, they spent about 8.5% more energy. Similar patterns remained the same when savers and spenders moved from lying to sitting or from lying to standing.

So what exactly is an investor and a spender? Amaro-Gahete admits that we are still not sure and that future studies will have to examine the "biological factors", the age or the state of health that could influence this dichotomy. But based on another of his discoveries, he has a first idea of ​​where to start looking.

"It seems clear that lean mass plays an important role in this relationship," he says.

In additional measures, he noted that high percentages of lean mass were associated with less energy expenditure when sitting in relation to the standing position – although the changes are minimal. In comparison, he explains that people whose percentage of lean mass is low seem to have more energy changes when changes in position.

"In this sense, our study supports the argument that individuals with lower lean body mass have lower energy expenditure at rest (lying down), but have greater differences in energy expenditure between sitting and sleeping. standing up because they have less efficiency, "he says.

This strange correlation seems to be related to the efficiency of energy expenditure related to lean mass, explains Amaro-Gahete. A person with lean body mass may work less efficiently to stay in the same position as a person who has a higher percentage of lean body mass. This inefficiency leads to more energy expenditure just by staying upright.

However, the lean mass hypothesis to explain the difference between the "sparing" and "depen- dent" dichotomy is still in its infancy. In the paper, they write that "the mechanism by which the vast majority of participants seem to spend remains to be elucidated".

Standing up or even outside, however, has considerable psychological benefits, no matter how difficult your body is. Whether you are a spender or an investor, you can move away from the screen.

Abstract: The time spent in sedentary behavior represents a heavy burden on public health. To reduce sedentary time in the general population, the simplest, most effective and most accessible method is to reduce the time spent in bed and in bed. Our goal was to compare differences in energy expenditure (EE) between lying, sitting and standing positions; and to analyze the associations between the evolution on the EE of the passage from one position to another and the anthropometric and body composition parameters in healthy young adults. A total of 55 (69% female) young healthy adults aged 21.7 ± 2.2 years participated in the study. We measured EE by indirect calorimetry while lying down, sitting and standing following standard procedures. The EE was significantly higher in the standing position than in the supine and seated positions (mean difference: 0.121 ± 0.292 and 0.125 ± 0.241 kcal / min, respectively, all P0.321). Our findings confirm that increasing standing time could be a simple strategy to slightly increase energy efficiency. Therefore, our findings have important clinical implications, including more effective surveillance, characterization, and promotion of sedentary lifestyle measures through low-intensity physical activity.

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