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Old 03-01-2017, 12:45 PM
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Dave @ ActiveMSers
Join Date: Jun 2008
Location: Albuquerque, NM
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Default STUDY: Physical activity is associated with a decreased multiple sclerosis risk

Since most of us reading this already have MS, it may be moot to us, but helpful to those at higher risk (those related to us). But since I was a big exerciser pre MS, it apparently did jack squat for me in preventing this disease.

Physical activity is associated with a decreased multiple sclerosis risk: The EnvIMS study

Kristin Wesnes, Kjell-Morten Myhr, Trond Riise, Marianna Cortese, Maura Pugliatti, Inger Boström, Anne-Marie Landtblom, Christina Wolfson, Kjetil Bjørnevik

First Published February 1, 2017 research-article


The lifestyle factors smoking and obesity have been associated with the risk of multiple sclerosis (MS). Physical activity (PA) may also be of importance.

To examine the association between PA and MS risk in Italy, Norway, and Sweden and to evaluate the possible influence by established risk factors.

In this case–control study, 1904 cases and 3694 controls were asked to report their average weekly amounts of light and vigorous PA during adolescence on a scale ranging from none to more than 3 hours activity. We used logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (CIs) and adjusted for potential confounders.

Vigorous PA was inversely associated with MS risk in the pooled analysis (p-trend < 0.001) with an age- and sex-adjusted OR of 0.74 (95% CI: 0.63–0.87) when comparing the highest and lowest levels. Adjusting for outdoor activity, infectious mononucleosis, body size, and smoking yielded similar results. The association was present in all countries and was not affected by exclusion of patients with early disease onset. Light PA was not associated with the risk of MS.

Our findings suggest that vigorous PA can modify the risk of developing MS independent of established risk factors.

Dave Bexfield
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exercise study

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