Around The Web With Amby

Great stuff to ponder on your next run. A wrap up of this week’s articles on exercise science as tweeted by Amby Burfoot, Editor at Large of Runner’s World Magazine.
You can follow Amby’s tweets at http://twitter.com/exerscience and his Runner’s World blogs at http://peakperformance.runnersworld.com and http://footloose.runnersworld.com.

Not a strong study, but vitamin & anti-oxidant supplementation improves cycling efficiency in small masters group. http://bit.ly/cjMpKK

High intensity interval training boosts SIRT1, the fascinating protein that keeps turning up in research studies. http://bit.ly/cHRblX

Older athletes not lacking amino acids after aerobic exercise; something else is limiting anabolic processes. http://bit.ly/dfNZA7

10,000 steps a day improves fitness, personal growth (?), and pushes health-related measures in good direction. http://bit.ly/982gdv

Phys ed classes produce good results in Georgia public schools–higher fitness, lower bmi. http://bit.ly/cKUpNd

Vigorous sports, but not walking, reduces future heart problems in large Dutch study population. http://bit.ly/98zsht

Falls can happen at any age: Think World Cup soccer. But exercise helps reduce walking-related falls of seniors. http://bit.ly/c1bx3G

Systematic review: Exercise might help, but little strong evidence for any path to reduced cognitive decline w aging. http://bit.ly/c2Ai2q

Important to remember that not everyone can exercise. Cytochrome B mutations may cause “exercise intolerance.” http://bit.ly/cfU8Dg

Elite Norwegian athletes (3000+) have slightly decreased risk of cancers. Thyroid cancer trends other way 4 women. http://bit.ly/bhu5Kz

Obese not just having sex performance problems. Also: other bad sex outcomes like unplanned pregnancies and STDs. http://bit.ly/bd55eV

Genetics of performance: Japanese endurance and sprint athletes have different mitochondrial DNA fragments. http://bit.ly/c9iNAt

You think ultra runners are burning off excess fat deposits? Maybe, but the thinner runners are more successful. http://bit.ly/dpn5NI

Wow, Swedes report record calorie burns/day in two ultra groups. Would you believe 18,000 calories in 24 hours? http://bit.ly/czsUgS

Sudden death in soccer roughly same as in running. Soccer: 1 in 60,000 to 200,000. Running usually 1 in 80,000 or so. http://bit.ly/cLEs0d

“Western diet” causes high-runner-bred mice to run even more. I want what they’ve got. http://bit.ly/adr5sq

Fitness lowers white blood cell counts associated with chronic inflammation. Fatness increases. http://bit.ly/9bPRQP

Japanese group finding support for “compliant tendons” as contributors to good Running Economy. http://bit.ly/cfSZzQ

Explosive plyometric training beats strength training for enhanced Running Economy in study with experienced runners. http://bit.ly/bVvQer

Core (imbalance) training has been getting roughed up a bit of late, but this new study supports it for trunk muscles. http://bit.ly/b2Y6Ee

Running injuries not the only insoluble body failing. Little known about back-pain causes. http://bit.ly/bZ5gG4 http://bit.ly/cCqIq8

In 6yr prospective study cancer patients, more vigorous exercise associated with lower mortality rates. http://bit.ly/apj8Cm

Biggest causes of running injuries in relative newbie group: lack previous running experience; male gender. http://bit.ly/cxAhjS

At same RPE, elliptical burns as many calories as treadmill. Making it a good cross-training alternative. http://bit.ly/diwNph

Brown rice decreases diabetes risk, white rice increases. Large U.S. epidemiol study. http://bit.ly/d7Q3OB

Superstitions boost performance. Not high-intens sports here. But does anyone doubt the power of superstitions? http://bit.ly/dlUhc2

Green tea extract for 3 weeks has no effect on endurance performance of bicycling men. http://bit.ly/91uyH4

Latest attempt to find genetic root for high vo2 max and endurance performance falls short. http://bit.ly/aRQZ6N

Without diet, “high” exercisers lose more weight than moderate. They also tend to voluntarily improve their nutrition. http://bit.ly/cOKzfB

Lack of exercise increases asthma-bronchoconstriction potential. Exercise decreases it. http://bit.ly/9IZYnt

You might get older, slower, with lower heart rate, but Relative Perceived Exertion remains stable guide to efforts. http://bit.ly/a3LQ2O

Funny, poorly written headline: “Sibelius stumps for anti-childhood obesity plan.” I bet obesity does lower births. http://yhoo.it/9rEVwt

Older Finns (57-78) with high fitness have lower rates of chronic diseases than the less fit. http://bit.ly/9KLNq5

Perceived Exertion and Perceived Rest help competitive runner-subjects select appropriate training intensity and rest. http://bit.ly/aaHtcn

Trained runners have more consistent stride pattern than untrained. No answer as to which came first. RT@stevemagness. http://bit.ly/9DAnIQ

Interval training boosts lactate threshold among runners, 2x week better than once. http://bit.ly/d9vnix

Orthotics get good grades for runner injuries in prospective, random, controlled study. http://bit.ly/b4PMdp

Recent London Marathon (date not noted) had 12% hyponatremia, mostly from drinking too much. But almost 40% lost weight. http://bit.ly/ccm8me