Kids less fit than their parent were (perhaps low vitamin D)

Children’s cardiovascular fitness declining worldwide

American Heart Association Meeting Report: Abstract 13498 November 19, 2013

• Around the globe, children are about 15 percent less fit than their parents were when they were young.

• In the United States, kids’ cardiovascular endurance performance declined about 6 percent per decade between 1970 and 2000.

• Across nations, endurance has declined consistently by about 5 percent every decade.

• In a mile run, kids today are about a minute and a half slower than their peers 30 years ago.

• Researchers analyzed 50 studies on running fitness between 1964 and 2010 that involved more than 25 million kids, ages 9 to 17, in 28 countries.

Vitamin D was not mentioned in the abstract

See also VitaminDWiki

• Sports benefits from up to 50 ng of Vitamin – meta-analysis - Nov 2012

• Muscles and Vitamin D - many studies

• Teens with higher levels of vitamin D were more fit in some ways– May 2013

• Teen obesity strongly associated with vitamin D deficiency – April 2012

• Delima: Most youths are vitamin D deficient – what to do – April 2012

• Children sicker now than in the past - 2007

• Teens increasingly indoors - especially if dark skin

• Incidence of 22 health problems related to vitamin D have doubled in a decade many charts

Overview Sports and vitamin D which has the following summary

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Overview Obesity and Vitamin D low vitamin D also increases obesity. The Overview of Obesity has the following summary

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Overview Deficiency of vitamin D has a chart showing decreases in past 40 years

Only half as many people had >30 ng of vitamin D 16 years later

Approximately 44% in 1988 but only 22% by 2004