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 and his Runner’s World blogs at and

Doh science? Running a 100-mile race in Alaskan cold is stressful.

Low dose creatine supplements for 6 weeks increases high-intensity muscle endurance, not body weight.

Exercise is excellent way to maintain muscle while you lose weight through calorie reduction.

How many calories burned by an extra pound of muscle? About 4/day says Powerbar expert.

Yesterday’s big topic in running was Dathan Ritzenhein’s new running form. I gathered lots of links and comments here.

Some new equations for Max Heart Rate. They’re different for older subjects than for younger age group.

Topical NSAIDS might be good option for local muscle pain. At least they lack systemic effects of ingested NSAIDS.

At “Science of Running,” Steve Magness gives his take on genes vs 10,000 hours of practice.

For improved lactate threshold, two interval workouts a week beats one.

Amino acid supplements boost “anabolic hormone profile,” good for muscle building and recovery.

Exercise good for depression, but many depressed have low fitness. So exercise prescriptions should be very moderate.

Elite endurance athletes have lower white blood cell counts. Appears “adaptive response, not underlying pathology.”

NY Times reviews Army studies finding no link between foot types, conventional shoe selection methods and injuries.

Antioxidants don’t diminish training effect. (Is tide turning on this question?) Prev neg result.

“Systematic review” finds “limited evidence” (glass half full?) that orthotics decrease knee pains (PFPS). PT can help.

15 minutes of stretching loweres “torque production” of plantar flexor muscles before exercise.

Creatine (28 days) does not improve sprint at end of endurance cycle test. (Does a few interesting things, though.)

NY Times explores “rinse and spit” phenomenon. Sports drinks improve performance even if you don’t swallow.

Overtraining linked to rise in “proinflammatory cytokines.” Signs: “depressed mood, sleep disturbances, and stress.”

Surprising result? Unlike male Ironman triathletes, females don’t lose significant body weight over the 10-15 hrs.

Post-workout cocoa drink decreased subsequent muscle soreness but didn’t change muscle metabolic markers.

Dogs aren’t just good for adult fitness walkers. They benefit kids in the family too.

Cycling in city still a healthy idea, even taking into account air pollution and traffic-safety risks.

Another study exploring genetic link to certain soft-tissue injuries – . Previous one here –

Running shoe designs and running injuries: a psychological link? “Sophisticated” designs might raise risky behavior.

How does blood doping work? It has “multifactorial effects,” not just an oxygen boost.

In trained male runners, RE assoc’d with muscle stiffness and inversely assoc’d with lower power.

Tiny study, but low carb diet increases RPE of high intensity exercise. And diminishes performance.