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How Inactivity Can Make You 8 Years Older

February 10, 2017

Researchers at University of California San Diego School of Medicine report that elderly women who sit for more than 10 hours a day with low physical activity have cells that are biologically older by eight years compared to women who are less sedentary.

 

The study, publishing online January 18 in the American Journal of Epidemiology, found elderly women with less than 40 minutes of moderate-to-vigorous physical activity per day and who remain sedentary for more than 10 hours per day have shorter telomeres -- tiny caps found on the ends of DNA strands, like the plastic tips of shoelaces, that protect chromosomes from deterioration and progressively shorten with age.

 

As a cell ages, its telomeres naturally shorten and fray, but health and lifestyle factors, such as obesity and smoking, may accelerate that process. Shortened telomeres are associated with cardiovascular disease, diabetes and major cancers.

 

"Our study found cells age faster with a sedentary lifestyle. Chronological age doesn't always match biological age," said Aladdin Shadyab, PhD, lead author of the study with the Department of Family Medicine and Public Health at UC San Diego School of Medicine.

 

Shadyab and his research team believe they are the first to objectively measure how the combination of sedentary time and exercise can impact the aging biomarker. Nearly 1,500 women, ages 64 to 95, participated in the study. The women are part of the larger Women's Health Initiative (WHI), a national, longitudinal study investigating the determinants of chronic diseases in postmenopausal women. The participants completed questionnaires and wore an accelerometer on their right hip for seven consecutive days during w

 

aking and sleeping hours to track their ovements.

"We found that women who sat longer did not have shorter telomere length if they exercised for at least 30 minutes a day, the national recommended guideline," said Shadyab. "Discussions about the benefits of exercise should start when we are young, and physical activity should continue to be part of our daily lives as we get older, even at 80 years old."

 

Shadyab said future studies will examine how exercise relates to telomere length in younger populations and in men.

 

 

Need help starting a safe, effective, doctor-supervised exercise program?  We now offer daily Yoga and Exercise Therapy classes!

Need help with changing your lifestyle and improving your health without drugs? We can do that.  Dr Cheryl Kent is your Winter Park and Orlando Chiropractic Physician, Nutritionist and Exercise Physiologist dedicated to helping patients and their families Create Balance, so that they can Live Well.  Book online or contact our office today.  

 

 

807 S. Orlando Ave. Ste T

Winter Park, FL 32789

(407) 670-0890

www.balancewellnesscare.com 

 

 

Story Source:

Materials provided by University of California - San Diego.

 

Journal Reference:

  1. Aladdin H. Shadyab et al. Associations of Accelerometer-Measured and Self-Reported Sedentary Time With Leukocyte Telomere Length in Older Women. American Journal of Epidemiology, January 2017 DOI: 10.1093/aje/kww196

     

     

     

     

     

     

     

     

     

 

 

 

 

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