Infrequent Weekly Exercise Still Provides Health Benefit

“Weekend warriors”, those who get all their exercise during the weekend may get similar health effects as those that spread their activity throughout the week. Canadian study looked at people who exercised 150 minutes per week and divided the 2300+ participants into frequent (more than 5 times per week) and infrequent (1-4 times per week) groups.…

Television and Lack of Physical Activity is Kryptonite to Sperm

The British Journal of Sports Medicine finds watching a lot of television (20h/week or more) is associated with lowered sperm concentrations and nearly half of the group with the highest count – those that watched no television. Those exercising ≥15 h/week also had the highest sperm concentration and the lowest concentration of sperm was the group that did…

Athletic Mice Have Bigger (mid) Brains

These are not dumb jocks. Mice that have been selectively breed for voluntary running have larger midbrains. This supports a model that proposes sections of the brain can evolve independent of the rest of the brain.  Also see “Genetic architecture supports mosaic brain evolution and independent brain–body size regulation” See also http://jeb.biologists.org/content/216/3/iii.full http://jeb.biologists.org/content/216/3/515 Mice selectively bred…

Intense Activity Linked to Better Cognitive Function in Elderly

Amount of physical activity has been correlated with higher cognitive function among the elderly. This study finds that intensity of activity not just amount is also important. I guess the lesson is don’t just go for a walk; Go for a fast walk. Translational Psychiatry (2012) 2, e191; doi:10.1038/tp.2012.118 http://www.nature.com/tp/journal/v2/n11/full/tp2012118a.html Intense physical activity is associated…