Lack of Vitamin D May Harm Exercisers

A new study in mice shows that having low levels of vitamin D may harm athletes and exercisers by limiting how long they can exercise (Aging, June 2018). Six-month old mice were put on a low vitamin D diet for one year. A six-month-old mouse is equ ...

By Gabe Mirkin, MD | July 8th, 2018
Running Stride Length and Speed

Your most efficient stride length is determined by what feels most comfortable to you. You cannot run faster by consciously trying to increase your stride length. When you run, your foot hits the ground with great force. The tendons in your legs ab ...

By Gabe Mirkin, MD | June 24th, 2018
Should Runners and Cyclists Lift Weights?

Competitive endurance athletes usually run or cycle very intensely on one day, feel sore on the next day and go easy for that day as they alternate hard-and-easy workout days. Adding strength training to an endurance program markedly increases athl ...

By Gabe Mirkin, MD | June 10th, 2018
Physically Active Jobs vs Leisure-Time Exercise

A review of 17 studies, covering almost 200,000 people, found that men who work at the most physically active jobs have an 18 percent higher risk of premature death compared to people with less physically-demanding jobs (British J of Sports Medicin ...

By Gabe Mirkin, MD | May 20th, 2018
Keto Diet Not Likely to Help Athletes

This month a study from St. Louis University shows that a low-carbohydrate, high-fat (LCHF) ketogenic diet impairs performance in sports that require speed (The J of Sports Med and Phys Fit, April 4, 2018). Most other studies come to the same concl ...

By Gabe Mirkin, MD | May 13th, 2018
Some Health Benefits of Exercise May Come from Changes in Colon Bacteria

A six-week program of exercise markedly increased the types of healthful colon bacteria and their functions in healthy but previously sedentary people (Med Sci Sports Exerc, Apr 2018;50(4):747-757). The 18 lean and 14 obese study participants follo ...

By Gabe Mirkin, MD | May 6th, 2018
More Reasons to Exercise as You Grow Older

Muscles are made up of thousands of muscle fibers just as a rope is made up of many strands. Each muscle fiber has a nerve that innervates it. With aging you can lose nerve fibers that, in turn, cause you to lose the corresponding muscle fibers, bu ...

By Gabe Mirkin, MD | April 29th, 2018
Fruit Beats Sports Drinks for Exercisers

Many studies show that you can exercise longer and more intensely and recover faster when you take a source of sugar during vigorous exercise. Dozens of brands of sports drinks are promoted to fill this need, but a new study from Appalachian State ...

By Gabe Mirkin, MD | April 22nd, 2018
How Exercise Reduces Dementia Risk

Almost 50 percent of North Americans over 85 and 13 percent of those over 65 suffer from Alzheimer's disease (Alzheimer's Assoc Facts and Figures, 2018). We know that you lose brain cells as you age, and scientists used to think that you co ...

By Gabe Mirkin, MD | April 15th, 2018
Good News for Male Cyclists

Cycling is not associated with increased risk for impotence or urinary symptoms. The largest and best study on the subject to date shows that serious cyclists are no more likely to suffer impotence or urinary problems than swimmers or runners (The ...

By Gabe Mirkin, MD | April 8th, 2018
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