-- Mary Elizabeth Dallas
WEDNESDAY, May 28, 2014 (HealthDay News) -- More and more U.S.
teens now fall short when it comes to cardiorespiratory fitness, a
new government report shows.
Using a specific measure, the researchers found that only about
half of boys and one-third of girls between the ages of 12 and 15
had adequate levels of cardiorespiratory fitness. The overall
percentage of fit teens went from 52.4 percent in 1999 to 42.2
percent in 2012, according to the U.S. National Center for Health
Statistics, part of the U.S. Centers for Disease Control and
Cardiorespiratory fitness involves the ability of the
circulatory and respiratory systems to support continuous physical
activity. It's measured by maximal oxygen uptake, also known as
VO2max. This is the greatest capacity of the body to use oxygen
Regardless of their age, boys had better cardiorespiratory
fitness than girls, according to data gleaned from national
surveys. Although levels of cardiorespiratory fitness among teens
did not vary by race or income, the survey data revealed this
measure of fitness did decline as weight increased.
A smaller percentage of overweight and obese young people had
adequate levels of cardiorespiratory fitness than teens who
maintained a normal weight. This is particularly significant, given
that about one in five U.S. teens between the ages of 12 and 19 is
The U.S. Centers For Disease Control and Prevention provides
more information on
teen health and physical activity.
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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