Two months ago, I wrote and spoke about how walking makes a difference…and we don’t need to do much…just about 4400 steps a day or around 30-45 minutes a day of walking.
An article in the New York Times by Gretchen Reynolds pointed me to this paper headed by Andrea Mendez Colmenares and her colleagues . It is a randomized control trial, where people were placed in a random manner into 3 groups; walking, dancing and a control group of no extra physical activity. The walking was for between 20-40 minutes at a moderately brisk pace to reach 50-60% of the maximal heart rate. MRI scans of these patients done before, during and after the study were analyzed.
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