Wednesday, December 2, 2009

Reduced Volume + Increased Intensity = Results

This isn't normally my type of thing (read: nutrition), but when I come across something that's yelling as loudly as this study, I get all giddy inside like a kid at Christmas.  Time to get Sciencey!




Reduced volume and increased training intensity elevate muscle Na+-K+ pump {alpha}2-subunit expression as well as short- and long-term work capacity in humans

Jens Bangsbo, Thomas P. Gunnarsson, Jesper Wendell, Lars Nybo, and Martin Thomassen Copenhagen Muscle Research Centre, Department of Exercise and Sport Sciences, Section of Human Physiology, University of Copenhagen, Copenhagen, Denmark
Submitted 12 April 2009 ; accepted in final form 28 September 2009
The present study examined muscle adaptations and alterations in work capacity in endurance-trained runners as a result of a reduced amount of training combined with speed endurance training. For a 6- to 9-wk period, 17 runners were assigned to either a speed endurance group with a 25% reduction in the amount of training but including speed endurance training consisting of six to twelve 30-s sprint runs 3–4 times/wk (SET group n = 12) or a control group (n = 5), which continued the endurance training (~55 km/wk). For the SET group, the expression of the muscle Na+-K+ pump {alpha}2-subunit was 68% higher (P < 0.05) and the plasma K+ level was reduced (P < 0.05) during repeated intense running after 9 wk. Performance in a 30-s sprint test and the first of the supramaximal exhaustive runs was improved (P < 0.05) by 7% and 36%, respectively, after the speed endurance training period. In the SET group, maximal O2 uptake was unaltered, but the 3-km (3,000-m) time was reduced (P < 0.05) from 10.4 ± 0.1 to 10.1 ± 0.1 min and the 10-km (10,000-m) time was improved from 37.3 ± 0.4 to 36.3 ± 0.4 min (means ± SE). Muscle protein expression and performance remained unaltered in the control group. The present data suggest that both short- and long-term exercise performances can be improved with a reduction in training volume if speed endurance training is performed and that the Na+-K+ pump plays a role in the control of K+ homeostasis and in the development of fatigue during repeated high-intensity exercise.



No?  Translation:  The control group doing LESS km/week improved performance by INCREASING intensity by incorporating sprints.  Now, for those than think running is just running, well, I'd urge you to head out to a track (albeit, frozen, but whatever) and run some 30s sprints.  FULL OUT.  Rinse, repeat.  Yeah, that's intense.

Why am I blathering about sprints?  We talk a lot about intensity in Crossfit.  In fact, I might alter a WOD for a client, reducing the total workload, to "keep the intensity" up.  By doing this, the client is able to maintain a high level of power output, and therefore, achieve the hormonal and physiological manipulation that makes the workout effective.

Intensity.  It's good shit.

Deadlift, CFLA, Dec 1st, 8PM

Finished up coaching the 5,6,7PM classes, and while I felt like going home and curling up to a bottle of Patron, I figured a coach actually doing some work was warranted.


Gayest shorts.  Ever.  But it illustrates the terminology about grip.



135#x5 mixed, left pronated, right supinated.  This is my usual mixed grip (right "up", left "down")
135#x5 mixed, left supinated, right pronated.  
225#x3 double pronated grip (both hands "down", or towards my body)
285#x3 mixed, left sup, right prone.  Felt brutal.  My weaker grip, fo' sho'
315#x3 mixed, left prone, right sup
345#x3 mixed
365#x3 mixed, 10# PR from Nov 6th.  I'd be a liar is I said these reps were pretty.

Tried a few 1RMs at 415#, which was just stupid funny, considering how 365# went.  No dice, not even close.

Met Con, "Annie", brought to you today by Vibrams.  Get primal, get Vibrams! (That's some catchy advertising for you, Jamie K.)


50-40-30-20-10
Double Unders
Situps (Abmat, feet anchored)
6:57.
Pretty damn happy with this, as this was actually my first ever crack at Annie.  In the past I had either just missed the day it was programmed, or as one enlightened client stated "had just conveniently avoided it".  Perhaps.  My double under have always sucked rocks, but in all 150 reps, I just missed once, in the 40 set.  Was it the power of Vibrams?  I dunno.  But I'll take it!  Situps are slower than molasses in January, as Ma used to say.  I could bust into the 5 min realm if I could just speed these up.  I'm fairly sure the abmat slows things down by forcing a great ROM, but I have nothing at this point to compare that, other than from what I'm hearing and seeing from others.


Comments (5)

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Jimmy Mac's avatar

Jimmy Mac · 800 weeks ago

Sweet - Mike thinks i'm enlightened!! haha

On another note bud, keep your posts up, I always enjoy reading them. Call me an engineer, but unless something is presented with supporting facts or numbers, how is one expected to buy into it?

Now, if you could only invent a pill which increased shoulder & upper back flexibility (and I wouldn't even care if you have backing up numbers for this one!!), you would be the man of the hour!! I'll continue to work on my stretching exercises in the meantime...
Interesting article but doesn't surprise me at all. The intensity of Crossfit alone allowed me to regain in a few short months what I had trained for years to achieve. I quit running long distance after a marathon in 2007 (Started late 2004)and injuries which accompanied the long distance running. In 2008 i ran a half marathon with NO running training at all in Missoula. I finished the race in 1:33:00 (13.1 miles) which was the split time in my Boston Marathon qualifiyng Victoria marathon in 2005. Again a few months of intensity training as opposed to years of distance training basically yielded the same results. Furthermore my leg muscles have taken along time to make strength gains since joining crossfit, not sure if this means your muscles after years of training have memory?? I seem to make huge gains on upper body strength as opposed to my leg gains. Any thoughts Mike??
1 reply · active 800 weeks ago
I'd hazard a guess that you have a genetic disposition to slow twitch (ST) type muscle fiber; hence the reason you kick ass and take names during endurance events. You can't change your muscle fiber type makeup, but training for specificity (explosive strength vs muscular endurance) CAN change the adaptive abilities of certain fast twitch (FT) fibers.
Looks like less volume then, for a better response from fast-twitch (type II fiber) training? What about for slow-twitch/endurance/type I fiber training?

Hey - you asked about fish oil before; I did some research and here is what I've found so far:

http://www.medium-chain-triglycerides.com/2009/11/program-fat-cell-death.html#dha
1 reply · active 799 weeks ago
I think for specificy, one *DOES* need to train in the LSD realm, although volume seems to be the killer, in the long term, for most endurance athletes. Once an aerobic base is "built" (for lack of a better term), FT-type A seems to be the "go-between" fiber, and will more than likely take on characteristics of ST fibers (ability to utilize lactate, greater endurance, etc etc). Pure speculation on my part, though.

Niiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiice stuff, on the fish oil, MCT! Just the kind of reading that I need right now with a wicked blizzard moving in. Thanks for stopping by and posting!

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