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Do you sprint? Here's some interesting news from Runner's World. The bones of older sprinters seem to be in better health than the bones of older distance runners.
Want to know the specifics? The article is here: http://www.runnersworld.com/health/older-sprinters-bones-healthier-older-distance-runners
"Older sprinters have better bone density and neuromuscular functioning than older distance runners, according to a study published in Osteoporosis International.German researchers examined 178 competitors at the 2006 edition of the European Masters Championships. They measured bone density, lean tissue mass, and a few measures of neuromuscular functioning, or how well one's nervous system communicates with one's muscles, in three groups of athletes: sprinters, middle-distance runners and long-distance runners..."
Do weight training and aerobics interfere with one another? Many athletes dodge this questions by doing each exercise on separate days. Is the phenomenon of “muscle interference” or “exercise antagonism” actually true? A study shows that there is no interference and that mixed training can actually bring extra benefits to your workout. See it on The New York Times.
"Is it wise to practice weight training and aerobic exercise on the same day?That issue is surprisingly contentious in the sports world. Many competitive athletes, their coaches and athletic trainers have come to believe that aerobic exercise, if practiced in close proximity to strength training, reduces the ability of muscles to strengthen and grow. Conversely, many contend that weight training performed on the same day as aerobic exercise blunts the endurance training response.This phenomenon, known variously as “muscle interference” or “exercise antagonism,” is a frequent topic on fitness-related chat boards. But to date, most of the discussions have been based on anecdotal evidence or simple conjecture. There has been little science supporting or challenging the existence of interference.
So, independently, groups of researchers at McMaster University in Ontario and the Karolinska Institute and other institutions in Sweden recently recruited volunteers to test the idea that you get more physiological benefit from performing only one type of exercise on any given day..."
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