Screen Time Weakens Boys’ Bones
Here’s more incentive to encourage boys to minimize computer use. A new study presented at the World Congress on Osteoporosis, Osteoarthritis and Musculoskeletal Diseases, in Seville, Spain, in April, draws a link between screen time and diminished bone mineral density.
The research, published in Osteoporosis International With Other Metabolic Bone Diseases (2014; 25 [s2]), included 1,038 Norwegian boys and girls aged 15–18.
“When we explored associations between BMD and screen time in a multiple regression model that included adjustment for age, sexual maturation, BMI, leisure time physical activity, smoking, alcohol, cod liver oil and carbonated drink consumption, we found contrasting relationships,” the authors reported.
Data analysis showed that boys spent more time using a computer than girls did and that increased screen time was associated with higher BMI levels. More screen time was associated with less BMD in boys, but the same was not true for girls.
“In contrast, girls who spent 4 to 6 hours in front of the computer had higher BMD than counterparts who spent <1.5 hours of screen time each day; this could not be explained by adjustments for the measured confounders,” the authors stated.
“We see different associations between time spent in sedentary activities and BMD levels among Norwegian boys and girls, and these findings warrant further studies in other populations,” the authors concluded.
For the latest research, statistics, sample classes, and more, "Like" IDEA on Facebook here.
© 2014 by IDEA Health & Fitness Inc. All rights reserved. Reproduction without permission is strictly prohibited.
IDEA Newsletter Sign-up
|Extreme Interval Training
In this course you'll learn goal-focused intervals and over 50 dynamic exercises and drills to create extensive and intensive training formats.
|Cut to the Core
This is a raw, unedited video filmed live at the 2009 IDEA World Fitness Convention™. Cut to the Core is packed full of core-focused exercises that aim to improve the way you look, feel and live.
|September 2011 IDEA Fitness Journal Quiz 4: Plyometric Training
This continuing education quiz is an in-depth look at plyometric training. Plyometric exercises—jumping, bounding, hopping, arm pushing, and catching and throwing weighted objects such as machine balls—are movements that involve rapid eccentric and concentric muscle actions.