Mediocre Runners

Crossfit Endurance Trail Running Style

by jon on Sep.13, 2009, under fitness

I just scored a pair of New Balance 840 from my local DSW for $33.  I was looking for a replacement for my beloved Montrail Streaks and I couldn’t pass up this deal. The 840s are a minimalist, but rugged shoe that is pretty close to a flat. It has a minimal heel and a very rugged outsole. It fits wonderfully and isn’t restrictive at all.  Needless to say, I felt the urge to test them out on this beautiful Sunday.  So I headed over to Potomac Overlook, which has some great trails, complete with hills and streams to ford.

But before heading out, I needed a plan. Mediocre Runners is against mindless slogging through miles for no purpose.  Now if I was going out for a long slow run just to enjoy the weather and being outside, that would be another story.  So I hit up Pat and asked his advice. Two words: Crossfit Endurance. I quickly found what I was looking for: 5 Min on, 2:30 Min off, 6 Min on, 3 Min off, 7 Min on. All out effort. This is a “lactate shuffle.” I have no idea what that means.

Anyways, I hit the trails and did a quick warm up on a flat part.  Then I hit the stopwatch and began my lactate shuffle.  The first 5 minutes were broken up my a stream I had to cross. So I started over and headed down hill a ways towards the Potomac. Then I headed up hill to work on my hill climbing technique.  My first 5 minutes were up more quickly than I expected.  The next two intervals were the same: fun, fun, fun.  I’m not sure the Crossfit Endurance workout was meant for some pretty steep trails, but I can say that was a pretty badass workout for only 18 minutes of actual running. I can’t wait for some more.

I almost forgot about the shoes! I’m no trail running expert, but I can say that I never lost grip on a variety of terrain: streams, rocks, roots, mud, dusty single track. The 840s bit and wouldn’t let go.  And they are FAST. I was grinning on the downhills. The minimal style and low heel also promoted a more natural mid foot strike. I love these shoes and can’t wait to hit the trails again.

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1 Comment for this entry

  • pat

    This is a geeky comment. Read with caution.

    Well I looked up the workout you did (looks great btw), and it’s called “lactate shuttle,” not shuffle! So what did that workout accomplish for you? Well we know what lactate acid is right? It’s a waste product of working out right? WRONG!!! During recovery, when you have much more oxygen in your system than when you were working hard (so in your case the long rest time you had in between sets), the lactate acid loses its hydrogen turns into pyruvic acid, which is an energy source. The lactate (no longer ‘acid’ when it hits your blood stream) is used for replenishing fuel to your muscles, mainly glycogen. Glycogen is premium grade muscle fuel derived from carbohydrates. The contribution lactate makes to glycogen replenishment and post-exercise recovery occurs during what is known as the ‘lactate shuttle.’ For energy sustainability during exercise, the ability of the lactate shuffle to redistribute carbohydrate – as potential glycogen, through the metabolism of lactate – from muscles that are fully glycogenstocked is key. The lactate shuffle lifts glycogen from muscles that are not being used significantly to areas where glycogen is being drawn significantly thus helping to sustain energy. I’d like to thank this website http://bit.ly/r6PUJ

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