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The new study analyzed data obtained from 269 participants who were involved in an ongoing cardiology study, the Health eHeart Study. They volunteered to report weight measurements from Bluetooth-connected smart scales and weighed themselves regularly; the researchers gathered 7,444 weight measurements over a four-month period, an average of 28 weight measurements from each participant.
The group was not nationally representative, by any means, so the results are not generalizable: About three-quarters were white, and just 3.5 percent identified as Black or African-American; about 3 percent identified as Asian-American. The average age was 51, and they were split almost evenly among men and women.
The participants were from 37 states and the District of Columbia. The researchers analyzed weight measurements taken between Feb. 1, 2020, and June 1, 2020, in order to look at weight changes both before and after shelter-in-place orders were issued for each state.
While the participants mostly had been losing pounds before the orders were issued, their weights rose steadily at a rate of about six-tenths of a pound every 10 days after the orders were issued, regardless of where they were in the country and regardless of chronic medical conditions.
The lockdowns have certainly had an effect on dietary patterns, on what people eat and how often they eat. But the restrictions also curtailed the humdrum physical activity that is part and parcel of daily living, the researchers said.
“If you think about people commuting, even running to the subway or bus stop, or stepping in at the post office to mail a letter, or stopping at the store — we burn a lot of calories in non-exercise activities of daily living,” said Leanne Redman, a professor of clinical physiology at the Pennington Biomedical Research Center, part of Louisiana State University.
Her research had found that people were eating a healthier diet during the initial days of the shutdown but were more sedentary.
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