Health for life

Women who exercise regularly spend as much time sitting as women who don’t, according to a new Northwestern Medicine study.

Emerging research shows that prolonged sitting has significant health consequences---and the new Northwestern study suggests that being a dedicated exerciser doesnt prevent women from spending too much of their day sitting.

This research is the latest indication that public health recommendations should be established to encourage Americans to limit the amount of time they spend sitting every day, said Lynette L. Craft, first author of the study and an adjunct assistant professor in preventive medicine at Northwestern University Feinberg School of Medicine.

“We all know someone who gets a good workout in every day, but then spends a large portion of their day sitting in front of a computer with few breaks,” Craft said. “If these people could replace some of the sitting with light activity---just getting up, moving around, maybe standing up when talking on the phone, walking down the hall instead of sending an email---we do think they could gain health benefits.”

The Northwestern research was done in collaboration with Ted Zderic, of the Pennington Biomedical Research Center and was published in the International Journal of Behavioral Nutrition and Physical Activity.

Past studies have shown that people who sit for extended periods of time---even those meeting exercise recommendations---are more likely to develop chronic conditions such as diabetes, obesity, cardiovascular disease and some cancers.

This was the first study to use an objective measuring device to examine the relationship between the type of exercise recommended in the government’s Physical Activity Guidelines for Americans and sitting. The guidelines recommend adults engage in a minimum of 150 minutes of moderate intensity aerobic activity every week. Previous studies on physical activity and sitting have primarily relied on self-reported data.

While many of the women in the study met or exceeded 150 minutes of physical activity per week, in reality only a fraction of the women’s days were spent being physically active. The women in the study spent an average of nine hours a day sitting. That number is consistent with previous results from much larger studies that examined the number of hours Americans spend sitting every day.

“I think some people assume, ‘If I’m getting my 30 to 40 minutes of physical activity a day, I’m doing what I need to do for my health,’” Craft said. “Of course, exercise is very important and is associated with many positive health benefits, but negative health consequences are associated with prolonged sitting, and this study shows that just because you’re physically active doesn’t mean you’re sitting less.”

For the study, 91 healthy women ranging in age from age 40 to 75 wore an activPAL activity monitor device during waking hours for one week. The device, which was worn on the thigh, recorded time spent sitting, standing and stepping, and engaging in sustained 10-minute bouts of moderate-to-vigorous physical activity.

Trying to replace some sitting time with more light activity throughout the day---along with the recommended bouts of moderate and vigorous exercise---is an approach more Americans should try to take, Craft said.

Future studies are needed to further examine the relationship between the type of exercise recommended in the Physical Activity Guidelines for Americans and sitting. For example, various subgroups such as men, children and the elderly should also be studied, Craft said.

The Lynn Sage Breast Cancer Foundation, the Avon Foundation and the Edward G. Schlieder Educational Foundation supported the study.

If childhood obesity expert Melinda Sothern could wave her magic wand and help kids live healthier lives, shed want parents and children to dine together every night. "Research is clear that family meals equal healthier weights, emotional stability and better school performance," she says.
She would have parents insist that their kids ditch cellphones and other media devices when they come home from school and go outside to play for an hour, or if its too dark when they get home, then they can put on some music and dance inside.
"This active time will burn four to five times more calories than sitting and help prevent obesity and type 2 diabetes," says Sothern, an exercise physiologist and a professor at Louisiana State University Health Sciences Center in New Orleans, who has treated more than 3,000 overweight children over the past 23 years. Shes the co-author of Trim Kids.
She also wishes parents would make sure that kids eat a healthy breakfast daily, get plenty of shut-eye and stop snacking mindlessly. "Parents have far more power than they realize to guarantee a healthy future for their children."
Sothern and other top national researchers in childhood obesity and nutrition are presenting their latest research at the annual Obesity Society meeting in Atlanta this week. In one session on Tuesday, several experts will offer parents practical tips on how to create healthy habits at home.
Currently, about a third of kids in this country are overweight or obese, according to the Centers for Disease Control and Prevention. Extra pounds put kids at a higher risk of type 2 diabetes, high blood pressure, high cholesterol, liver disease, sleep apnea and other health problems.
Some ideas from nutrition and exercise researchers on setting up a healthier home environment:
• Plan healthy, tasty breakfasts. Offer children a lean protein at breakfast such as eggs, string cheese, Canadian bacon, turkey bacon or hummus, Sothern says. Serve them fresh fruit such as berries. Or whole-grain cereal with nuts is another option. Top off the meal with a glass of fat-free or 1% low-fat milk or a carton of low-fat yogurt, she says.
• Discourage mindless munching. Dont let kids eat in front of the TV or computer and gradually restrict all eating and drinking, except for water, to the kitchen counter, table or dining room, Sothern says.
• Get them involved. Take kids to the grocery store. Skip the soda, cookie and candy aisles and have children select one fruit and vegetable to try each week. At home, include children in lunch and dinner preparation, Sothern says.
• Reinstate family traditions. Insist on family dinners, set the table with real cloth napkins, light candles and play soft music in the background to encourage discussion. Compliment the children on their healthy food selections, cooking and manners, she says.
• Get some shut-eye. Allow kids no more than one hour of media time before bedtime. Try to make sure they get the required 9 to 10 hours of sleep a night. Research shows that lack of sleep equals unwanted weight gain, behavioral problems and difficulty concentrating the next day, Sothern says.
• Offer a nutritious starter course. Pennsylvania State University research shows that adults who eat a broth-based bowl of vegetable soup; a large, low-calorie, lettuce-based salad; or an apple before a meal consume about 110 to 190 fewer calories at the meal, including the calories in that first course. The same idea could work with kids, says Barbara Rolls, a professor of nutritional sciences at Penn State. Theyll not only fill up on fewer calories, but theyll be eating a healthy first course.
• Trick their tummies. Add their favorite fiber-rich vegetables — such as spinach, zucchini, yellow squash, broccoli, carrots, peppers and onions — to lasagna, casseroles, pasta dishes and pizza. The veggies lower the calories and increase the nutrients in each bite, Rolls says. Also increase the proportion of vegetables in stir-fry dishes, broth-based soups and stews and extra vegetables to sandwiches. Substitute vegetable or fruit purees for half or even two-thirds of the added fat in quick breads and muffins, she says.
• Use smaller plates. A study of first-graders showed that most kids served themselves more at lunch (about 90 calories more) when they used adult-sized dinner plates compared with using child-sized plates, which is about the size of an adult salad plate. "We know that adults over-serve themselves with larger plates, and this study says the same holds true for children. Using smaller plates at home may promote healthy child portion sizes," says Jennifer Orlet Fisher, an associate professor of public health at Temple University in Philadelphia.
• Teach kids to dance. Tell them youre playing Dancing with the Stars and let them waltz, do the cha-cha-cha or swing dance, Sothern says. This active time will burn four to five times more calories than sitting and improve their overall health.
• Swap sedentary time for active time. Kids only burn 30 to 50 calories when they are sitting for an hour, but they burn 400 to 500 calories in an hour if they are playing tag, dancing or doing field sports, she says. The governments physical activity guidelines say children and teens should do an hour or more of moderate-intensity to vigorous aerobic physical activity each day. Sothern recommends they do at least two hours of physical activity a day.
• Play outside with your children. Moms and dads should teach their kids to throw, pitch, catch, pass, jump and ride a bike because their kids may not be learning these important skills at school.
• Encourage physical-activity breaks. "There is a lot of evidence that kids should not sit still for more than 60 minutes at a time," says Penny Gordon-Larsen, a professor of nutrition at the University of North Carolina, Chapel Hill. When kids are doing their homework or on the computer, they need to get up regularly and move around or consider standing while they are working, she says. Every little bit of activity counts. Have them do at least 20 to 30 minutes of physical activity after school, such as shooting hoops, biking, playing soccer, jumping rope, dancing, walking or playing a fitness-related video game, Gordon-Larsen says.
• Steer clear of sugary drinks. This includes regular sodas, sweet teas, high-calorie specialty coffees, energy drinks and juices, Gordon-Larsen says. "Its such an easy way to cut out excess sugar and calories," she says. Instead offer water and low-fat milk, even low-fat chocolate milk.
_http://www.usatoday.com/story/news/nation/2013/11/10/kids-eating-exercising-healthfully/3358229/