Tuesday, February 28, 2006

 

A reason why we do sprint sets occasionally

The Pacific Magazine section of the Seattle Times had an article titled "Burst Into Shape" in the Sunday 2/26/06 edition. Many are interested in getting in yardage and have little interest in the sprint sets that we sometimes do. The paragraphs from the article might give some insight to why we do some sprinting.

"Researchers at McMaster Univeristy say six minutes of intense exercise a week can be equal to an hour of daily moderate activity. Such bouts 'improved muscle health and performance comparable to several weeks of traditional endurance training,' syas Martin Gibala, an associate professor in the department of kinesiology at McMaster.

The research, published in the Journal of Applied Physiiology, found that performing repeated bouts of 'sprint' exercies made profound changes in skeletal muscle and endurance capacity, similar to training that requires hours of exercise each week. The endurance capacity in the sprint group increased on avearge from 26 to 51 minutes, and the subjects' muscles showed a significant increase in citrate synthasee, an enzyme that is indicative off the tissue's ability to use oxygen.

Researchers at Southwest Missouri State University and the University of Missouri found that accumlated 10 minute bursts totaling 30 minutes are more effective than continuous exercise in lowering fat and triglyceride levels in the bloodstream after eating. The study found that regular repetition of short exercise bouts can have a postive effect on metabolism. Researchers emphasized the results only apply to those participating in regular exercise."

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