Maybe the numbers on the scale aren't alarming, but that doesn't mean that healthy-weight children get a pass on exercising, according to a new University of Illinois study published in Pediatrics.
"The FITKids study demonstrates the extent to which physical activity can improve body composition, and that's important because it matters to your health where fat is stored. But the study is also interesting for what happened in the control group to the kids who didn't exercise," said Naiman Khan, a postdoctoral researcher in the U of I's Division of Nutritional Sciences.
At the end of the nine-month program, the contrast between the exercisers and non-exercisers was noticeable, he said. "FITKids had improved cardiovascular fitness, less overall body fat, and carried less fat around their abdomens, a risk factor for diabetes and heart disease. The opposite was true for the control group who maintained their regular after-school routine."
FITKids was developed by Charles Hillman, a U of I professor of kinesiology who studies the effects of physical activity on the brain and cognition. The body composition results were secondary to the study's primary aim, which was to assess cognitive function as it changes in kids who are physically active compared to those in the control group.
"These results are interesting because it wasn't a weight-loss study. More than half the kids who participated were at a healthy weight, and that allowed us to observe how exercise or lack of exercise affected body composition in normal-weight and overweight children," Khan said.
In the study, 220 eight- to nine-year-olds were assigned to either a nine-month physical activity intervention or a control group. The intervention provided 70 minutes of moderate to vigorous physical activity five days a week. Baseline and follow-up cardiorespiratory fitness, percent fat mass, percent central fat mass, and estimated abdominal fat tissue were measured.
Although the control group displayed no change in cardiorespiratory fitness, kids in that group increased in percent fat mass and abdominal fat tissue, he said.
"So the weight of healthy-weight children who don't exercise doesn't just remain stable. Normal-weight kids who don't exercise do gain an excess amount of weight for their age, and if they become overweight, the tendency is to store excess fat in their abdomens. They're going in the wrong direction," Khan noted.
Parents of healthy-weight children would do well to promote exercise so their kids can avoid the onset of obesity, the researcher advised.
"Your child should engage in moderate to vigorous exercise for about an hour a day. Adults should make sure kids have a space to play and play games in and opportunities to be physically during or after school. If kids are at a healthy weight for their age, we want to make sure they stay that way," Khan said.
Naiman Khan, Lauren B. Raine, Eric S. Drollette, Mark R. Scudder, Sharon M. Donovan, and Charles H. Hillman, all of the University of Illinois; Matthew B. Pontifex of Michigan State University; Darla M. Castelli of the University of Texas at Austin; and Ellen M. Evans of the University of Georgia were co-authors of the study.
"Impact of the FITKids Physical Activity Intervention on Adiposity in Prepubertal Children" appears in Pediatrics, vol. 133, no. 4, and is available pre-publication online at http://pediatrics.aappublications.org/content/133/4/e875.full?sid=32787956-c7d2-4258-ab0a-91062ded706e . The study was funded by the National Institutes of Health.
Phyllis Picklesimer | University of Illinois
Antarctic Ice Sheet mass loss has increased
14.06.2018 | Technische Universität Dresden
WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
15.06.2018 | Materials Sciences
15.06.2018 | Ecology, The Environment and Conservation
15.06.2018 | Power and Electrical Engineering