An international written report led yesteryear Loyola University Chicago is providing compelling novel evidence that do may non hold upwardly the primal to controlling weight.
Researchers who studied immature adults from the USA too 4 other countries institute that neither physical action nor sedentary fourth dimension were associated amongst weight gain.
"Our written report results dot that physical action may non protect yous from gaining weight," said Pb writer Lara R. Dugas, PhD, MPH. Dugas is an assistant professor inward the Department of Public Health Sciences of Loyola University Chicago Stritch School of Medicine.
The written report is published inward the mag PeerJ.
Physical action has many proven wellness benefits, ranging from reducing the run a peril of midpoint disease, diabetes, too cancer to improving mental wellness too mood. People who are physically active tend to hold upwardly healthier too alive longer. But patch physical action burns calories, it too increases appetite, too people may compensate yesteryear eating to a greater extent than or yesteryear beingness less active the residue of the day.
Some experts accept suggested that a reject inward physical activity, peculiarly inward the workplace, has been a primal contributor to the obesity epidemic. But inquiry such every bit the novel Loyola study, inward which physical action is objectively measured too participants are followed over time, has non institute a meaningful human relationship betwixt weight gain too physical activity.
The Loyola written report is 1 of the main outcomes of the Modeling the Epidemiologic Transition Study (METS). In METS, researchers followed adults aged 25 to twoscore living inward v countries: the United States, Ghana, South Africa, Jamaica too Republic of Seychelles (an isle reason eastward of Africa). The U.S. adults alive inward Maywood, Illinois, a suburb of Chicago. Participants are predominantly of African descent too stand upwardly for a wide attain of social too economical development. Principal investigator of METS too senior writer of the Loyola written report is Amy Luke, PhD, professor too vice chair of Loyola's Department of Public Health Sciences.
Previous inquiry has institute that when people are asked almost their physical activity, they tend to overstate the total they do. To render a to a greater extent than objective measure, participants wore tracking devices called accelerometers on their waists for a week. The devices measured the wearers' liberate energy expenditure too pace count. Researchers too measured participants' weight, elevation too trunk fat. After an initial exam, participants were asked to render 1 twelvemonth too 2 years later.
At the initial visit, Republic of Ghana participants had the lowest average weights (139 pounds for both men too women), too Americans the highest weights (202 pounds for women, 206 pounds for men). Ghanaians too were fitter than Americans. Seventy-six of Ghanaian men too 44 percentage of Ghanaian women met the U.S. Surgeon General physical action guidelines, patch exclusively 44 percentage of American men too xx percentage of American women met the guidelines. The guidelines recommend doing at to the lowest degree 2 too a one-half hours of moderate-intensity aerobic do (such every bit brisk walking) per week.
Surprisingly, full weight gain inward every reason was greater amid participants who met the physical action guidelines. For example, American men who met the guidelines gained a one-half pound per year, patch American men who did non run into the guideline lost 0.6 pounds.
Researchers did non honor whatever important relationships betwixt sedentary fourth dimension at the initial view too subsequent weight gain or weight loss. The exclusively factors that were significantly associated amongst weight gain were weight at the initial visit, historic current too gender.