And young black women showed significant declines in exercise between 1984 and 2006, according to a University of Michigan study to be published in the October issue of the American Journal of Public Health.
The study is one of the first to analyze long-term patterns in weight-related activities, and to assess how these patterns vary by gender, race and ethnicity, and socioeconomic status.
The disparities in health behaviors the study reveals are consistent with disparities in the prevalence of obesity, particular among women, according to Philippa Clarke, lead author of the study and a researcher at the U-M Institute for Social Research (ISR).
The study is based on data obtained every two years from 17,314 men and women who were aged 19 to 26 between 1984 and 2006. The participants were part of a follow-up panel drawn from the Monitoring the Future Study, conducted by ISR. The analysis was funded by the Robert Wood Johnson Foundation, as part of the Youth, Education, and Society Project, also based at ISR.
For the study, the researchers looked at trends over a 23-year-period in six different health behaviors. They measured how often participants reported eating breakfast, and eating at least some green vegetables and fruit; how often they exercised vigorously (jogging, swimming, or calisthenics); how often they got at least seven hours of sleep, and how much television they watched on an average weekday.
"Agreement is growing that the source of the obesity epidemic lies in an environment that produces an energy gap, where energy intake exceeds energy expenditure even by as little as 100 excess calories per day," wrote Clarke and co-authors Patrick O'Malley, Lloyd Johnston, John Schulenberg and Paula Lantz, all researchers at ISR.
The finding that young women consistently exercised less than young men, suggests that differences in energy expenditure could play a role in gender disparities in obesity and overweight.
The frequency of eating fruit and vegetables remained relatively stable among young adult women but declined significantly among young men. Young men also reported eating breakfast less often than did young women.
Both men and women reported a steady decline in the frequency of getting at least seven hours of sleep each night.
Despite the focus on television viewing as an important determinant of obesity, the researchers found that the amount of time men and women spent watching TV stayed relatively stable.
When the researchers compared behaviors of different racial and ethnic groups, they found some major differences. For example, although white women showed a steady increase in the frequency of eating breakfast, the trajectory for non-Hispanic black women declined until 1996 and only began to increase in 2000.
Although fruit and vegetable consumption changed little among young adults, consumption of both was consistently lower among black and Hispanic men and women in any given year.
And although the frequency of exercise remained relatively stable among young adult women in general, among black women, the frequency of exercising steady declined.
In addition, black and Hispanic women showed greater declines than white women in the frequency of getting at least seven hours of sleep a night. They also were less likely than white women to report eating breakfast, and eating fruits and vegetables.
Among men, those from lower socioeconomic backgrounds reported dramatic declines in sleep, after adjusting for race and ethnicity.
Minority racial and ethnic groups, and women from lower socioeconomic groups, also reported watching television more often than whites and women from more affluent backgrounds.
Established in 1949, the Institute for Social Research (ISR) is among the world's oldest survey research organizations, and a world leader in the development and application of social science methodology. ISR conducts some of the most widely-cited studies in the nation, including the Survey of Consumer Attitudes, the National Election Studies, the Monitoring the Future Study, the Panel Study of Income Dynamics, the Health and Retirement Study, the Columbia County Longitudinal Study and the National Survey of Black Americans. ISR researchers also collaborate with social scientists in more than 60 nations on the World Values Surveys and other projects, and the Institute has established formal ties with universities in Poland, China, and South Africa. ISR is also home to the Inter-University Consortium for Political and Social Research (ICPSR), the world's largest computerized social science data archive.
Diane Swanbrow | EurekAlert!
Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
08.08.2018 | Event News
27.07.2018 | Event News
25.07.2018 | Event News
16.08.2018 | Information Technology
16.08.2018 | Health and Medicine
16.08.2018 | Information Technology