Showing posts with label weight loss. Show all posts
Showing posts with label weight loss. Show all posts

Friday, September 16, 2011

Running To Be Thin

Sometimes I hate writing about food/weight issues because the subject is so LOADED. Yet, it is such an important issue, especially for athletes. And, with the Biggest Loser starting on Monday, I’ve had weight loss and exercise on my mind.

First, let me reiterate, I am not a doctor or nutritionist, but you already knew that. I write based on research and personal experience. Take what I say with a grain of salt and go do your own research or consult your doctor. I like to bring important issues to the surface, but I don’t pretend to know it all or have all of the answers.

Many people will tell you they start running to lose weight. Running can help shed the pounds quickly because it is a lot of bang for your buck. Running = intense exercise. You burn a lot of calories in a short period of time (about 100 calories per mile depending on weight/height, etc.).

Running to lose weight is all fine and good if it is part of a sensible weight loss program that is balanced with healthy eating, rest and all of those other good things. In my opinion, it become a slippery slope when people train for marathons to lose weight. Restricting calories while putting in big time miles can be dangerous and lead to all sorts of complications, most notably that your performance will suck because you just don’t have the energy due to lack of fuel. To me, this is like being pregnant and trying to diet. Not a good idea on so many levels.

The other scenario is the runner who has a decent BMI, but has developed strict and rigid eating and exercise patterns to avoid gaining a single ounce. This runner may not have a full blown eating disorder, but may have obsessive tendencies about food and exercise which are taking them in an unhealthy direction. It is easy to disguise restricted eating under the veil of, “Oh, I am just getting healthy and making better choices.” In reality, these actions are may be promoting overall poor health.

There are usually deep seated reasons why people have disordered eating. Not feeling good enough, needing control, wanting better performance. The list goes on.

Signs of Disordered Eating (from HERE): 

  • You avoid multiple foods due to self-diagnosed food allergies
  • You experience chronic or numerous gastrointestinal problems that interfere with pre-exercise fueling (e.g., not being able to eat breakfast before races or lunch before afternoon practice)
  • You undertake long training efforts and marathons on water alone due to being unable to "tolerate" sports drinks
  • You have unbalanced vegetarian eating styles—particularly among young women
  • You have extensive self-imposed "food rules" or rigid categories of good and bad foods
  • You eat secretively or eating differently with others (only acceptable healthy foods) than when alone
  • You avoid food-related social situations such as family gatherings or team outings

Compulsive exercising can go hand in hand with disordered eating. The two make an especially dangerous combination.

Signs of Compulsive Exercising (from HERE):

  • You suffer symptoms of overtraining syndrome.
  • You force yourself to exercise even if you don't feel well.
  • You almost never exercise for fun.
  • Every time you exercise, you go as fast or hard as you can.
  • You experience severe stress and anxiety if you miss a workout.
  • You miss family obligations because you have to exercise.
  • You calculate how much to exercise based on how much you eat.
  • You would rather exercise than get together with friends.
  • You can't relax because you think you're not burning calories.
  • You worry that you'll gain weight if you skip exercising for one day.
  • You have extensive self-imposed "food rules" or rigid categories of good and bad foods
  • You avoid multiple foods due to self-diagnosed food allergies

Be honest. Do you see yourself in any of these things?

I have to look in the mirror too. People sometimes point the finger at me – you are so thin, you exercise so much. True and true. But, what needs to be looked at is a person’s relationship to food. Much in the same way you would look at an alcoholic's relationship to alcohol. Is it obsessive, unhealthy, compulsive, out of control, detrimental? Or is it balanced and life-sustaining? 

Food and I are friends. I did go through a time in my 20s when food was the enemy.  I was about 30 pounds heavier than I am now. I restricted what I ate and counted calories. It wasn’t until I changed my view of food (something to be enjoyed, something to nourish and fuel the body) that my relationship to food changed.

A couple of the above bullets do apply to me – I have overtrained (hence, two stress fractures). I have also been known to go as fast and hard as I can (TWSS) during my workouts. These two issues were not, however, related to my need to burn more calories or lose weight. My actions were due to lack of education about proper training (which incorporates rest/recovery) and my misguided thinking that more intense and frequent training meant better performance. WRONG.

The truth is, I usually gain weight during training and I am fine with that. It tells me my body needs the extra weight to meet the demands of my workouts. My body type is small, as is my mother’s and my aunt’s.  Bottom line, I cannot perform well if I am not eating well.

I also have a ten year old daughter who desperately needs me to set a good example for her in a culture that worships skinny magazine models and a “you can a never be thin enough “ attitude. As her positive  role model, I can’t afford to engage in unhealthy behavior. You will NEVER hear me say the words “diet” or “calories.” I don’t talk of pants fitting too tight or something being “too fattening.” I model moderation, balanced eating and moving one’s body in a way that makes one happy.

Only you know what is going on with you. Sometimes people are even good at lying to themselves. This is such a prevalent issue that Women’s Running Magazine reports that 60% of women will have disordered eating at some point.

How are you doing? We all have unhealthy tendencies at times. Do you have an awareness of yours?

SUAR

PS: Get your SUAR shirts HERE. They will only be on sale for about another week.

Thursday, September 1, 2011

The Doc Answers Your Questions

Huge thanks to Dr. Inigo San Millan, Director of the Exercise Physiology and Human Performance Lab at the University of Colorado's Anschutz Health & Wellness Center, for answering your questions from this post. He’s been really busy working with the Pro Cycling Tour here in Denver, but managed to squeeze us in. 

There were so many questions, that I tried to pick the ones that seemed to address most concerns/inquiries.

Why can’t I lose weight?:

I have been exercising 5-6 days a week for a least an hour a day, alternating workouts, and 2x/week doing daily doubles, and my weight is the same as it was last November during my recovery season. I have been stuck at 148lbs forever it feels like. Most of my friends, who just started to run over the past month have been dropping weight like crazy, but I don't seem to be headed anywhere...I pay pretty close attention to my diet and not sure what to do about my weight plateau....

The doctor says…

What probably happens is that at the exercise intensity you run you are not using much fat as you probably use more glucose. This is a very common thing in recreational athletes who exercise several times a week, have a good diet and don't get to lose weight. It may or may not be a caloric intake problem but what I see for the most part is that you don't "burn" much fat when you exercise. Calories in and calories out may not be necessarily the same. Calories can be derived from fat and glucose (and a bit of protein) so calories are not always equal in terms of substrate utilization. When we see caloric expenditure (Kcals) on our heart rate monitor or gym bike screener we can never see whether those calories come from fat, carbohydrate or which % belongs to either one. As an example we can "burn" 700Kcals in a workout session but the majority (let's say 90%) can be derived from carbohydrates and therefore very little from fat. However we can also "burn" 700kcals by exercising at different intensities and levels and therefore can "burn" 70% of all Kcals derived from Fat and the rest from carbohydrates. So the same rate of caloric expenditure does not represent the same metabolic response to exercise and therefore substrate utilization. With the methodology I apply in the lab it is possible to determine fat and carbohydrate metabolism and responses to different exercise intensities and identify that individual training intensity that elicits the highest fat utilization and translate it in heart rate.

Why doesn’t running get easier?

I'd like know why running doesn't seem to ever get easier for me! I'm a race walker (4 full, 5 half marathons) but I've been running more and more over the past 12 months and it doesn't seem to get any easier! I always feel like my lungs are going to explode.

The doctor says…

This could be due to many different reasons but I would guess that your fitness level is not optimum and very possibly you are training at the wrong zones and therefore not improving. I would suggest doing a physiological test to know where you exactly are and to set your training zones.

Is physiological performance testing right for me?

I'd love to know if this testing is right for me. I'm a casual runner - 5ks and 10ks mostly - with weight and resistance training in between.

The doctor says…

This test is not just for the elite athlete but for anybody who wants to improve fitness levels and get to know how his/her body works during exercise and be able to improve and optimize time.

Why do we have to do long runs so slow?

I'd love to hear more about the theory of doing your long runs 1-2 minutes slower than anticipated marathon pace. I don't understand how I can possibly run marathon pace for 26.2 if I haven't at least trained a few long runs near that pace.

The doctor says…

The theory behind this is to improve your Type I muscle fibers (Slow Twitch). These are the fibers with the highest mitochondria density, highest fat utilization capacity, oxidative enzymes and lactate transporters. Training these fibers should be the base of any training and normally this intensity corresponds to a slightly lower than goal pace as goal pace is an intensity that recruits fast twitch muscle fibers (Type II's) and are more glycolytic (use more glucose) have less mitochondria density so also use less fat and produce more lactate. In a way, slow twitch muscle fibers are great assistants to fast twitch muscle fibers both during training and competition so slow twitch muscle fibers must be very robust. By training at specific heart zones we can elicit a higher efficiency in slow twitch muscle fibers.

How the heck can I become a faster runner?

I sure would like to know how to get faster. I have been running for 8 years, have done speed work and just don't get any faster. In fact this past half marathon I was 5 minutes slower than last year after doing more speed work. (2:40 half-marathon)I am over 50 so I know age probably has a lot to do with it.

The doctor says…

Age could be a factor, but believe me you should be able to improve your PR despite being over 50. It is possible that you are not training in the correct way and training zones and therefore not improving performance. It could be also possible that you are over trained and fatigued and therefore your body cannot recover properly and not improve as needed. We can easily monitor and check this through blood analysis and normally can identify the source of overtraining and/or fatigue and correct it.

Can VO2 Max be improved?

Can I improve my VO2? is it true that I can only improve my speed for 7 years (after initiating running) and after that, I will maintain for awhile and then decline in speed? is there a way to determine the minimum mileage I should be running every week in order to increase speed and endurance when NOT training for a marathon?

The doctor says…

Relative VO2max (ml/kg/min) can be increased as weight decreases. Absolute VO2 may increase depending on the fitness levels that you have. However, VO2 max, although it is a great indicator of cardiorespiratory fitness it is a poor predictor for performance. The last runner in a competitive marathon race can have the same or even higher VO2max than the winner. Whatever ultimately makes the difference are the local/metabolic adaptations and events happening at the muscle and cellular level. It is not just about how much O2 you can get into your muscles. It is about how well does muscles can deal with that O2 and how efficient they are at utilizing fats of carbohydrates as well as how efficient the cells and muscles are at dealing with byproducts of muscle metabolism like lactate or hydrogen anions. There are many of events going on at the muscle and cellular level and those are the ones that make the different. We can see your metabolic response and adaptations to exercise through the physiological test and set the right training zones to improve those metabolic and cellular responses and adaptations and therefore optimize your fitness level.

Regarding how many times you should be running per week in order to increase speed and endurance when not training for a marathon, it is quite individual and without physiological testing we cannot have real scientific parameters. But I would say that with 2-3 days of endurance you can maintain a good level of your mitochondria density and oxidative enzymes and with 1-2 days of intensity/interval training you should be able to maintain your glycolytic capacity (that of fast twitch muscles) which is very important during the competition.

How can I figure out my heart rate zones?

I'd like to know if there is a semi-effective way to determine heart rate zones WITHOUT getting this test done. The formulas online seem very standard, so I'm wondering if there's a way that I can tweak it to be more accurate, until I can afford the test.

The doctor says:

That is a good question but unfortunately the only way to know your heart rate zones is by performing a physiological test. As you point out, the formulas out there are very standard and for the most part quite inaccurate which can elicit the wrong training response and therefore jeopardize training and fitness level.

How many calories do I need?

How does one accurately find out their maintenance calorie intake?

The doctor says…

That is a good question. It is possible to do a basal calorimetry test to see your basal metabolic expenditure, although this can be tricky as probably not very accurate to represent the entire 24h caloric expenditure as it can really vary throughout the day and level of activity, stress, etc. I would say that if you are a healthy and fit individual a diet of about 1,500 to 2,000 Kcals depending on your body mass plus 45min to 1:30h of exercise 3-4 times a week should help you maintaining your caloric intake and balance.

 

If you are in the Denver area and would like to schedule a test, contact the Performance Lab at 720-848-8208. They may also be able to tell you how to find a testing option in your area.

I hope this was helpful. I know I learned a lot. Thanks Dr. San Millan!  Me and my slow twitch muscles are gonna grab a heart rate monitor and GO!

How about you? Did you learn anything?

SUAR