Archive for December, 2009
To gel or not to gel?
I’ve been reading a new book my wife got me for Christmas…Healthy Intelligent Training: The Proven Principles of Arthur Lydiard by Dr. Keith Livingstone. I’ve always been a fan of Lydiard’s methods and think he was way ahead of his time. I also think many folks dabble in Lydiard and don’t truly understand him. This book puts his methods in perspective and also has the benefit of our current understanding of physiology, training response, etc. It’s a geeky training book, but really good.
Anyway, point of the post…
It has an interesting section on carb intake (e.g. gel, energy drink, etc.) on long runs in training—not racing. It says we should not use ANY carbs during long training runs of up to 3-3 1/2 hours (anything over that, supplementing carbs is recommended). Also, keep in mind these are aerobic steady state runs, not hard pace. They do recommend water and electrolytes (especially if it’s hot), but no carbs in order to train our systems to conserve glycogen and burn fat.
The basic physiological premise is this…
While running slowly increases fat burning for fuel, another way to really increase fat burning is to run when the blood glycogen (carb) stores are lowered. When muscle glycogen stores are lowered, fat burning really goes up since there is little carbohydrate available to utilize. Carb stores are lowered after 1 to 2 hours of running so you want to do 30-90 minutes of running AFTER this to maximize fat burning and to help stimulate the body to store more muscle glycogen for future runs (and races). When running (and racing) for this long, the blood glucose level also lowers. Ingesting carbohydrates, either through a sports drink or energy gels, before and during the run, maintains your blood glucose level. This no carb approach challenges the body to run with a lowered blood glucose level (and over time) adapt to better handle this state of lowered blood glucose.
The long, steady state runs must be at least two hours. The longer the better. If you’re used to gels during long runs, you’ll have to ween yourself, as your body is adapted to the constant supply of blood glucose and not the lowered state. But, as you reduce, the body will adapt and you’ll eventually be able to run up to 3 1/2 hours without any carbs (Which could take up to 8 weeks to adapt fully, depending on the individual). They also recommend not having any right before the workout either. Have normal breakfast (several hours before), then go train. This is for training only, then, in a race, you give yourself the normal dose and your body feels pampered. Interesting stuff.
NOTE: The book does say, that when you do this in training, you need to be ready to ingest carbs, protein and fat immediately afterward, or at a minimum within that 30 minute window after run completion. You’ll be low and need to get your glycogen levels back up for recovery and next day training. It’s just for during the long run.
Question…have any of you tried this? I know the Skaggs brothers practice this and so does Tony Krupicka. I’ve been thinking about it for a while (the weening off completely for 2-3 hour runs). And, over the past season, have actually started ingesting less gel on long training runs than I would in a race and not taking any up to 2 hours or so…occasionally, but not consistently. However, this takes it to a different level and has a few studies to back it up. Anyway, found it interesting and thought I’d share it. Giddyup!
Here’s a few quick photos of my studded set up for winter. Since I’ve opted to go minimalist on my shoes, I’ve also opted to come up with the most minimalist studded shoe set up too. The New Balance MT100s (on right)…which I’ve only put studs in the forefoot (4 total). And, I also included a photo of the New Balance 904 Trail (left) that I hacked off the heel’s outsole to lower it, as it had a pretty elevated heel. I did add 2 studs in the heel of the 904s since there is NO tread anymore. However, I have to admit…since running in the MT100s, I haven’t really run in the 904s anymore. But, thought I’d show them for fun.
For more info and a step by step “How-To” on studding your shoes, click here and see my post from 2008.
I’m on my 4th week of my transition to a more minimalist running shoe and ditching the aftermarket arch supports I’ve been running in for years. I’ve been wanting to do this for some time, but needed to wait until the off-season to do it so I could take it slow and allow my feet and lower legs to adapt to the new stress.
I haven’t been barefoot much for 2 years after a frustrating bout of plantar fasciitis in early 2007. I used to go barefoot always at home, but quit after that and have been shod most of the time since, except for some dabbling in my first pair of Vibram Five Finger Flows while playing with my kids or doing yard work during the past two summers.
As for my current transitional phase…
The first 2 weeks, post-Ozark Trail 100, I spent an increasing amount of time barefoot and doing things around town in the my black Vibram Five Finger KSO’s while recovering from the 100 miler. After the initial 2 weeks off running and barefoot time walking and becoming comfortable unshod again, I started to run in non-arch supports about 30 minutes every other day, with my normal running shoe set-up (e.g. arch support) on all other days.
The 2nd week of running, I kept that same regimen (every other day), but added in three 6-12 minute VFF runs at the end of my normal runs as a cooldowns in the latter part of the week (3 days in a row). I would do some total barefoot running if weather would allow, but it’s winter in full swing here right now. Anyway, by this time, I was starting to feel more comfortable without my arch supports in.
Once into week 3 of running, I ditched my arch support altogether for all my runs and got up to an 11 mile trail run in 4 inches of snow in the Badlands in minimalist shoes (A very well broken in New Balance 904 Trail with the rear half of tread cut off to lower the heel). The next day I turned around and did a 7.5 mile tempo in the Inov-8 F-lite 230—which left me with really sore calves. Part of the issue is this shoe is too narrow in the forefoot for my foot shape. I couldn’t spread my toes very well right before foot strike, which you need to do to immulate an unshod foot strike.
I took an easy day the next day and only did a 2 mile easy VFF run in the evening and felt better the next day. Still had soreness, but I chalked it up to too much, too soon and the fact that there has to be some adaptation with regard to my lower legs. With a lower heel position on foot strike, you really utilize your calves and achilles much more deeply than with a elevated-heel running shoe. So, this is just part of the adaptation my legs have to deal with. Much like your first hard downhill mountain running session to prepare your quads for 100 mile mountain races. 3-4 days of deep soreness, then they come out the other side stronger. Stress and adaptation.
This week I really felt more comfortable. I studded the forefoot of my New Balance MT100s and did a nice 8.5 miler on semi-packed snow with a quick summit of Horse Butte in the middle. The calf soreness is almost completely gone and I’m feeling more natural in the altered foot strike that the low-heeled, minimal shoe requires. Anything over 1 1/2 hours of running, I’m still planning on starting in my minimal shoe and carrying the arch supports with me just in case. Just tryin’ to keep on, keepin’ on.
Lastly…I found a very interesting article on barefoot running, running injuries, and elevated heel running shoes called Athletic Footwear and Running Injuries…interesting read. Giddyup!
I was getting cabin fever after a couple of days of single digits and a very short 35 minute run in the snow yesterday. So, I decided to brave the elements this morning and nordic ski. After a business breakfast with some other folks in town, I headed out to Virginia Meissner Snow Park and went for a 2 hour Classic XC Ski. Up Tangent Loop toward Swampy Lakes, then the out and back to Swede Ridge Shelter (breaking trail) and back Tangent Loop for a total ski of almost 10 miles. It was beautiful. Clear blue sky. Snow is fast. I had the whole forest to myself (except for the last half mile of trail I ran into a few folks heading out). Not too many skiers out today. It was negative 4 degrees when I started, and the same when I finished. I have a little cold burn on my nose and cheeks, but was well worth the effort. Giddyup!
I toed the line at the very cold Jingle Bell 5k today in Bend. A cold front blew in last night and dropped the temps into the 20s. This has become an annual tradition for me. My kids do the Kids Fun Run through downtown, I run the 5k and jog back to meet the family and watch the Christmas Parade downtown. Had a great time today. The 5k course is about a tenth of a mile long (3.2 miles), with a nice little small hill in the last 1/4 mile. Ran the first mile in 5:34, second in 5:52, and the third in 5:41. Came across the line in 5th for an overall time of 18:15. Fun day.
Went out tonight for a 1.3 mile “shake out the legs” night run in the Vibram Five Fingers. I’m really starting to like dabbling in these as I make the final transition out of my aftermarket insoles (BioFits) and to the New Balance MT100s. My goal is to get up to 20 minutes comfortably in the VFFs…once I’m there with no discomfort, I’m treating myself to a cool trail run in them. Kind of a personal gift…have to wait, if I go out too soon, I’ll get all into the run and overdo it. I know myself too well! Giddyup.



