School-age children who get regular daily exercise improve their health – both now and in the future. Bjorn Rosengren, from Skane University Hospital (Sweden), and colleagues conducted a population-based controlled exercise intervention for six years in children ages 7 to 9 years in Malmo, Sweden. In the intervention group, 362 girls and 446 boys received 40 minutes of daily physical education at school. The control group of 780 girls and 807 boys received 60 minutes of physical education per week. Researchers registered incident fractures in all participants and followed skeletal development annually. During the time of the study there were 72 fractures in the intervention group and 143 in the control group resulting in similar fracture risks. The increase in spine bone mineral density was higher in both the boys and girls in the intervention group. During this same time, researchers performed a retrospective cross-sectional study of 709 former male athletes with a mean age of 69 years and 1,368 matched controls with a mean age of 70 years to determine how many had suffered fractures and rates of bone density loss. Within the former athletes group, bone mass density dropped only minimally from +1.0 to +0.7 standard deviations compared to the control group. The study investigators submit that: “As increased exercise improves bone mass and in girls bone size without affecting fracture risk, society ought to encourage exercise during growth.”
Detter FT, Rosengren BE, Dencker M, Nilsson JA, Karlsson MK. “A 5-year exercise program in pre- and peripubertal children improves bone mass and bone size without affecting fracture risk.” Calcif Tissue Int. 2013 Apr;92(4):385-93.
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A program of daily physical education in school-age years may associate with lower bone fracture risks with aging.
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Tip #143 - Dangers of Daytime Dozing
A condition in which a person is unable to maintain alertness during the daytime hours, excessive daytime sleepiness (EDS) is characterized by a general lack of energy, even after apparently adequate night time sleep.
Researchers from the Hopital Paul Brousse (France) studied 9,294 subjects (60% women), ages 65 years and over, at the study’s start (1999-2001), when 18.7% of participants experienced regular or frequent EDS. After 6 years of follow-up, the team found that EDS was associated with a 33% increased risk of death. In particular, EDS raised the risk of death due to cardiovascular disease by 49%.
Columbia University (New York, USA) researchers correlated excessive daytime sleepiness to an increased risk of stroke. Studying 2,153 men and women, average age 73 years, the team found the risk of stroke to be 2.6-times greater for those who dozed during the day (as compared to those who did not doze). Those who dozed significantly had 4.5-times greater stroke risk. While those who had the most trouble staying awake had the highest stroke risk, the researchers also found that those who dozed moderately had a 60% increased risk of any vascular event.
If you are unusually sleepy during the day, consult an anti-aging physician to identify and correct the underlying cause. Sleep apnea (a disorder in which people stop breathing throughout the night), imbibing excessive amounts of alcohol, and eating a carbohydrate-laden or fatty meal are possible contributors to daytime sleepiness. » MORE