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marylin monroe
Showing posts with label new year's resolution. Show all posts
Showing posts with label new year's resolution. Show all posts

Intelligent Weight Loss Workouts: 45 Min of HIT'14 = "High Intensity Thinking" Help Resolve HIS New Year's Resolution

High intensity thinking - intelligent weight loss workouts
It's almost 2014! Actually it is already 2014; at least for my friends in the "Far East" (HAPPY NEW YEAR!) and thus almost too late for the annual "I want to lose weight" new year's resolution. Ok, you as a SuppVersity reader should actually know better, but just in case you are still planning to make the weight loss happen solely by increasing your workout volume, I would suggest that you replace some classic HIT training with the revolutionary HIT 2.0 - high intensity thinking regimen (warning: doing this too often may actually build more brain than muscle mass ;-). 

Well,... now that I take a closer look at the results of this recent study from the University of Quebec here,  I have to realize that this will only work if you are a man. But don't worry, I am pretty sure there is something to be learned for the ladies in the last SuppVersity article of 2014, as well ;-)

All jokes aside, your brain is a sucker for energy!

I guess you will be familiar with the over-cited fact that "the human brain is only 2% of the weight of the body, but it consumes about 20% of the total energy we need every day"... I know that's boring, but actually that's quite an important point, because it tells you that your brain is not just a sucker for energy, but also a sucker for new information, which will in turn increase the energy requirements of the insatiable heap of neurons in your skull. Why? Well, our brains need energy to process each and every of these information chunks - max. 30W per opeartion, if the currently heralded estimations are correct. I know that sounds tremendously much, but if we performed only one of these operations per minute, you would hardly burn the energy equivalent of 1/25 of a 70-85% chocolate bar during your high intensity thinking sessions.

Against that background it's all the more impressive that Emilie Pérusse-Lachance and her Canadian colleagues were able to measure a significant increase in energy expenditure, when they had their 35 subjects (22 men and 13 women; aged 24 ± 3 years) read a 10-page text and write a summary of approximately 350 words using a computer in the "mental work condition" of their study.
Figure 1: Energy expenditure in kcal/45min in the control and the mental work condition, left; energy intake during the buffet ca. 15min after the control and mental work condition, right (Pérusse-Lachance. 2013)
If you take a look at the data in Figure 1, you will also notice that the scientists original hypothesis, which was that they would observe a similar hyperphagic (=hunger ➲ increased energy intake) response to in the "mental work" condition as Chaput et al. who conducted two very similar studies in 2007 and 2008.  The actual study outcome does yet tell a different story: While the female study participant did in fact supercompensate for the extra-energy they had to spent, when they were not watching TV and lolling around like in the control condition, the men were probably so immersed in their thoughts that they simply forgot to eat... ok, I guess you already realized that this was an ad-hoc hypothesis to make sure you don't realize that neither I nor the scientists have any clue what the underlying reasons of this sex-difference were.

I would even guess that the women did not even notice that they were overcompensating. If you take a look at the subjective hunger scores that have been assessed by seven visual analogue scale questionnaires the participants had to fill...
  1. at the beginning (T-60/60 minutes before the buffet), 
  2. after the experimental session (T-15/15 minutes before the buffet), and 
  3. after the buffet-type meal (T0, T60, T120, T180, and T240).
...those will tell you that the ladies either claimed to, or actually weren't more hungry than in the control condition. In view of the irrefutable evidence that they still ate more (see Figure 1) this may look awkward. When it's all said and done, these contradictory result does yet only confirm that you cannot trust people, when they tell you "I am never hungry and actually don't eat that much.... I have really NO clue where that belly comes from". This may even be their own perception, but that does not change that it is usually not in line what happens at the buffets, dinner tables and - most importantly - during the snack breaks people take during not after their high intensity thinking regimen all over the world.
Figure 2: Change in energy balance (kcal) in the "exercise" condition in the course of which the subjects walked on a treadmill for 45 min, waited for 15 minutes and were then allowed to avail themselves of as much food as they wanted at the buffet - further evidence that the "exercise just makes you hungry" hypothesis is bunk.
Bottom line: By now you should have realized that this article must not be taken too seriously. Though,... if this type of heavy brain lifting would have women eat 15.3% (=121kcal/day) more and men 16.1% (=267kcal/day) less every day it would probably have a non-negligible impact on your chances of living up to your new year's weight loss resolution in 2014.

But don't worry, ladies. Life is not so unfair as it may seem. All you have to do to achieve an almost level playing field is to convince him that a 45 min walk in the park with you is much more fun than 45 min of high intensity thinking. And if that's  not convincing enough, show him the data in Figure 3 and tell him that real exercise (in the study 45min of paced walking) will help both of you improve your energy balance - his by -31% (-516kcal) and yours by -23% (-184kcal).
References:
  • Chaput, J. P., & Tremblay, A. (2007). Acute effects of knowledge-based work on feeding behavior and energy intake. Physiology & behavior, 90(1), 66-72.
  • Chaput, J. P., Drapeau, V., Poirier, P., Teasdale, N., & Tremblay, A. (2008). Glycemic instability and spontaneous energy intake: association with knowledge-based work. Psychosomatic medicine, 70(7), 797-804.
  • Pérusse-Lachance, E., Brassard, P., Chaput, J. P., Drapeau, V., Teasdale, N., Sénécal, C., & Tremblay, A. (2013). Sex Differences in the Effects of Mental Work and Moderate-Intensity Physical Activity on Energy Intake in Young Adults. ISRN Nutrition, 2013.

Of the 1.8 New Year's Resolutions We Make Every Year, 23% Fail Within Two Weeks: A Humorous Scientific Outlook on the Fallacy of New Year's Resolutions.

Image 1: I don't know about this "smart ass" in particular, but I would assume you have had enough "smart asses" post their knowledgeable tips on their blogs to get along without another "12 useful tips for 2012" from me, right?
I guess at least those of you who have been following this "blog" (I hope that you would agree that the SuppVersity has become more than another "blog") have come to "know" me well enough not to expect me to provide you with the 1001 list of ten, or at it has become fashionable as of late, twelve super-duper congenial tips to achieve your goals in 2012. Change, and this is the one wisdom I want to give you to take along for the next year, change rarely is something that comes over night or is "triggered" by the adherence to any fixed plan. Change is the result of the accumulation of small steps, dx/dt, as we physicists would say, i.e. covering an infinitesimal distance (=dx) within an infinitesimal short timespan (=dt). If we now denote steps that take you further towards your goal as positive and steps by which you depart from your ultimate goal as negative than any year in which the integral over dx/dt would be positive, or in non-physicist terms, where the number of infinitesimal steps you have taken towards your goal was greater than the ones by which you have distanced yourself from what you want to achieve, a successful year! Consider that before you file 2011 as another "lost" year.

Enough smart ass new years advice for 2011!

But hey, didn't I say, I would not give you wise ass advice? I guess we should get back to science then... after all the "-versity" in the name of this site denotes that we are doing serious stuff here, doesn't it? So, take my hand and descend (for the last time in this year) with me into the archives of science. The first thing we hit on is an editorial from the most prestigious medical journal in the world, The Lancet, in which the contemporary editor of the journal has the following well-phrased advice for you (I did not say I would not provide you with wise ass advice from others ;-)
The opening of a new year leads all of us to take some stock of the past and to formulate a certain number of resolutions for the future, and the frame of mind which is thus indicated should be indulged in, but only with moderation. To spend too much time in thinking over what has gone by will interfere with the work that lies under our hand; to make resolutions that are too large and too numerous for our powers is to court disappointment. None the less every thoughtful man will use his past experience to guide him in the future both as to what he will do and as to how he will do it. (The Lancet. 05. January 1907)
Image 2: New Years Eve is for most of us the time, when we simply cannot ignore the necessity to make a change, any longer.
Somehow, this reminds me of some of the "best tips, tweaks, tricks" and, above all, "common pitfalls to avoid in 2012", I have been reading elsewhere around the web over the course of the last days. I mean we all know that the more good intentions we have, the more likely they are to never materialize into significant changes. Being aware of this circumstance, Judith Stoner Halpern who wrote the editorial to January issue of the not just as famous *rofl* International Journal of Trauma Nursing suggests that (Halpern. 2001) "perhaps the best New Year’s resolution that we can make would be to learn how to make a better resolution"

Interestingly, and this is probably the first thing that goes beyond "conventional new year's resolution wisdom", the first reason she invokes is the time of the year!
An easy answer is to blame January 1. For one half of the world, it falls in the middle of winter, and for the other half, the middle of summer. This is not the most opportune time to enact a dramatic change. The middle of a season often causes us to feel a lack of commitment; this may be part of the reason that ancient cultures chose spring or fall as the time to start anew. For some, January 1 may feel like an artificial time for change.
When you come to think about it, this is actually quite a reasonable argument. With the "winter blues" upon us January certainly is not the best time to "blossom". The neo-paleolithic folks many of us recently believe we are, we should better crawl up in our dugouts and set up our plan of attack in order to mimic the "ancient cultures" and start anew in spring.

Does understanding the psychology of change hold the key for success?

The question yet remains, how do we instigate a new-or restart? A possible answer may come from Freeman and Dolan's theoretical model of change that in turn is based on a previous model by DiClemente that has been extensively discussed in the scientific literature on psychotherapy. According to the model, the authors propose in their 2001 paper in Cognitive and Behavior Practice, there are 10 stages. Where the last one, maintenance marks the (temporary) achievement of preferably positive "change".

Figure 1: The psychology of change - an illustration based on the "revisited stages of change model by Freeman and Dolan (Freeman. 2001)
If you take a closer look at my graphical illustration, you will realize that you have (hopefully) already overcome the initial stages of
  • noncontemplation, where, in your everyday oblivion, you do not even consider making a change
     
  • anticontemplation, where you are trying to convince yourself that you are "just fine the way you are" or that it would be impossible to make a change, anyways
     
  • precontemplation, where you are thinking and often dreaming about what would happen if you were able to make a change
Interestingly, for most of us the realization that another year is almost over usually makes us go through these stages (many of you may skip the 2nd one, some may get stuck there), automatically. So even if you are not one of Freeman and Dolan's persons, chances are that you are now, as they put it "directly and actively considering change" and have "reached a point of readiness to engage in the change process." 

Sitting in your neo-paleolithic dugout - or, for those who have not been infected by the paleo-virus in the course of 2011, simply in your cozy home - it is now about time to lay out your plan of attack!
Action planning is the stage of change when the therapist and patient have collaboratively developed a treatment focus and treatment plan. The therapetnic process has begun and the patient is beginning to make plans on how change will occur. The key phrase with this group is, "I plan to change."
Now, I don't know whether you have a therapist, or not (note: this is nothing to be ashamed of - I would even count the people I know that are in psychotherpeutical care among the few relatively sane human beings which populate this planet ;-), are working with a trainer, nutrionist or just a good friend who will help you on your way. In the end, it will always be about your commitment to your plan to change and eventually your success. That you have to determine the latter based on the integral over the steps in the right and steps in the wrong direction is something I have mentioned before. Freeman and Dolans model, however, provides a theoretical framework to understand this sometimes annoying, often frightening and in many cases discouraging back-and-forth even better.
Figure 2: Reported success rates at different timepoints in the new year and at 2 year follow up (data based on Norcross. 1989).
What are typical New Year's Resolutions? I must admit that I was quite disappointed about the lack of scientific data on the real-world outcome of New Year's Resolutions. Similar to the previously discussed issue of holiday weight gain which turned out to be at least less pronounced than everyone would have it (cf. "Santa is Coming to Town"), there is almost no realiable, non-specific, i.e. not related to only one goal (mostly smoking cessation), scientific data that would proof that the majority of new years resolutions fail.

In one of the two peer-reviewed studies I could come up with (both based on the same dataset), Norcross et al. report that their 213 study participants "made an average of 1.8 New Year’s resolutions" (Norcross. 1989). Among those, smoking cessation (30%) and weight loss (38%) together accounted for two-thirds of the resolutions. Other non-idiosyncratic New Year's Resolutions revolved around relationship improvement (5%), reduction in alcohol consumption (2%), and an increase in monetary savings (2%). A cursory glance at figure 2 does yet suffice to see that the difference between the real and the commonly assumed "success"-rates is much less pronounced than in the previously cited case of holiday weight gain. With a 23% chance of failure after no more than 2 weeks and a drop out rate of  57% after three months, chances that the average 16-75 year old citizen of northeastern Pennsylvania is able to realize his resolutions for the new year really isn't very high. A reported (do we believe those guys?) success rate of 19% after 2 years is nevertheless more than what my personal observations would suggest.

Lapses are integral parts of change - accept them work, through them, or fail

Image 3: If your New Year's resultion incorporates letting go of junk food, thinking of Mark Haub, the "Twinkie Diet Professor", probably would not be one of the "behavioral skills" to incorporate in your mental toolbox.
Let's assume you are a carbohydrate-addict and decided to cut back on carbs in the next year. Do I see you tremble in apprehension? Well, this is actually an apprehension of the prelapse phase, a phase that is "characterized by active and often overwhelming cognitions related to the reversal of the changed behavior" the carb-junkie you are, even the thought of having to put down your twinkies and dingdongs (whatever the latter may be) is getting you all psyched up. If it was already January the 1st, this would be the moment, when you are eating your eggs and bacon for breakfast, look at the cereals your brother is shuffling down his throat and think to yourself: "How can I possible endure that for the rest of my life?" Then you remember the words of the mighty paleo guru Robb Wolf to "give it a shot for thirty days" and gag down the last piece of bacon.

Psychotherapists refer to simple tricks like this as "behavioral skills", i.e. (mostly cognitive) techniques by which you can "short-circuit the prelapse before it leads to the old behaviors."

Figure 3: Successful and unsuccessful strategies to stay on track; * indicate statistically significance for success (data based on Norcross. 1989).
Which "behavioral skills" are most helpful? In the aforementioned study, Norcross and Vangarelli also analyzed which methods the participants successfully (figure 3, green) and unsuccessfully (figure 3, red) applied to achieve their aims. As you can see planning ahead (contingency management), managing "dangerous" stimuli, exercise (obviously not the way to distract yourself from the temptations if your new years resolution was to exercise more) and, above all, taking one step after the other, were the most effective strategies in the toolboxes of the 213 study participants, of whom only 18% said that "nothing hindered their resolution". Among the remaining 82%, most invoked their own lack of willpower (34%) as the fundamental obstacle. 16 subjects found that the realization of their resolution was not compatible with their lifestyle and 8 maintained that they had not been serious enough about their resolution.
(Un-?)fortunately, you are human and thusly destined to let reason go and fall back to old, oftentimes bad habits. So, there will come a day, when you will be sitting next to your meanwhile "no longer so loved ones" (after all, they are allowing themselves to eat all those jummy junk right next to you at your table ;-) and stare at the twinkies and dingdongs they are indulging. Suddenly a thought crosses your head: "Wasn't there this funky professor who lost a ton of weight on the twinkie diet?" You reach out and, probably much to the secret delight of your "formerly loved ones" who have been jealous of how fast you have been losing weight in the course of the last weeks, grab one of the twinkies that have been waiting for so long for you to take appropriate care of them... I guess I don't have to tell you the rest of the story, do I?

What is important, though, is that whenever lapses like this happen is that you always remember that no matter how many twinkies you may have eaten, how many training sessions you may have skipped, and/or how many cigarettes you have smoked, it is still your choice:
  • You can either return to the anticontemplative phase by persuading yourself that you could shed off the extra points just as well on twinkies and dingdongs - and even if that would not work, why would you have to make a change, in the first place? After all, you feel "fine just the way you are"!
     
  • Or you can analyze what triggered your temporary loss of memory and inability to apply one of the various behavioural skills that have prevented you from "lapsing" before.
I guess, it is not difficult to tell that option #2 would be the way to go. You have to go back to the drawing board. Not to start all over again, but to develop new skills and cognitions and to practice old to make sure that your next dt/dx's will be positive again. In that the ability to accept your own fallibility and the insight that a bunch of twinkies won't ruin the admirable success of the previous weeks, may be one of the key elements that will eventually enable you to achieve your contemporary goals, maintain your success and reach for the stars.

Along these lines, I wish all of you, my dear silent and not so silent readers, your families and loved ones, a successful, happy and, above all, healthy year 2012.