Wednesday, January 27, 2010

Stretching ..... The silent solution


How many times have you been told to stretch and you take about 2 minutes to stretch the entire body and you head on out to recreational sporting or begin your workout at the gym?  It becomes apparent in our lifestyles to dismiss what may seem very passive and "useless", especially as our time becomes more filled with work, driving, eating, recreation activity, and social obligations.  So this entry is to hopefully enlighten you or hopefully confirm your suspicions as to why stretching is SOOOOOOOO important in your daily routine.

So first I ask,
  • Has anyone really explained the importance of stretching?  
  • How much do you think you should stretch?
  • Do you think the positions you stay in all day (for work or recreation) shape your body?
Here is a common scenario I hear.   I often ask, "Do you stretch?"  The response I often hear from my patients and friends is, "Of course I stretch!!"  And then I follow up with asking,  "...so how often are you doing it?"  And then I get one of two responses: A) "I stretch every time I go to the gym (or play said sport), or B) "3 times a week for X minutes."
    Let me try to explain the damage a dysfunctional and abnormal muscle can do to your body..........
    They can first of all, the more obvious problem, cause pain within the muscle itself or the attached joint;  They can pinch on superficial or deeper nerves in the body causing pain; They can be too short and can cause the antagonist (opposite sided) muscle to be weak and throw off the length-tension relationship; They can affect more distal, or farther away, joints by pulling on the entire body causing poorer body mechanics and increase stress across joints.

    Now I'm a very analytical and more mathematical and statistical type of guy so I'm going to try to explain the importance in that manner.  Let's say for example that you work at a desk for 6-8 hours a day and you have been at this job for 5 years.  That's 7800-10400 hours in a sitting posture/position that you're body is not really meant to be in.  In order to counter balance that, let's say you need minimally 1% of that time to open up, which equates to 780-1040 hours across 5 years to just keep your body sane.  That's a lot of time!!!  But also much needed to keep your body in alignment without causing more stress.

    So now the commonly asked question,  "How long should I stretch for?", and "How much should I stretch?"

    Studies published have shown to prove that a minimum of 30 seconds at a sustained intensity is needed to show a physiological change in the muscular-tendinous junction.  That means no bouncing up and down and pushing your way farther in to the stretch, unless told to do so.  So that is the recommendation and I'm sticking to it. 

    As far as how much stretching, it may vary.  But ideally I recommend the ratio of 1 minute per hour of your time (for those more sedentary jobs).  So that would mean a total of 8 minutes in your work day to stretch, whether it is once an hour, once every 2 hours for 2 minutes, or once you get in the office and after lunch for 4 minutes.  I will say, the most success I have with people is when they do it more frequently through their entire day (8-10 times in a day for 2-3 minutes at a time).  Now that being said, I usually recommend specific stretches, maybe 2-3 total to be done, so it shouldn't take a lot of time.  

    Another way I like to describe why the frequency of stretching is so important is with a rubber band.  If you stretch a rubber band out quickly, it is more likely to snap back and rebound.  If you give it a slow gradual stretch over a longer period of time, you can change the elasticity and tension of the rubber band without even really noticing a difference.  This is the same with muscles, you want to stretch it frequently so that you don't notice a back-lash from stretching at a high intensity and infrequently. 

    Which brings me to the last component with stretching......... The Intensity!!  When stretching, you should feel a minimum to moderate/medium stretch in the muscle to achieve the best results.  Again, not stretching does zero good, but stretching too much will make the muscles rebound and they will hate you for it.

    So the key points to stretching are: 
    • minimum of 30 seconds at a sustained intensity
    • the frequency in a day should be at a ratio of 1 minute per hour of your time (for those more sedentary jobs), or a blanket statement of 8-10 times in a day
    • the intensity you should feel should be a minimum to moderate/medium stretch in the muscle
    I hope this enlightens you and please feel free to comment and write back.  Take care and keep stretching!!!! ;)

    Dr. J Wong

    Wednesday, January 20, 2010

    The Heat Versus Cold debate

    The easy answer is, "ALWAYS COLD...... unless you have arthritis."

    Usually by the time you have pain, your body has accumulated enough inflammation and "toxic soup substances" to elicit your body to respond.  So it's more than your normal, "typical" system can handle.  As a result, you have to take off the stresses and give it a chance to reabsorb back into the body, or else find a way to suck it all out of your body, i.e. needles and syringes (which is not always a fun experience.)  With cold, you can numb the pain away, decrease the blood flow to the area to stop the "toxic soup substances" from invading the damaged tissue (vasoconstriction) and sometimes even distracting an injury, thus allowing your body to begin reabsorbing the "bad things".

    Heat, on the other hand, is a vasodialator, which means the (blood) vessels increase in diameter allowing for more blood and other substances to enter into the injured area.  Now, sometimes that is a good thing, but other times it is not.  If at the time, it makes you feel better, the odds are that it's working from a nerve stimulation standpoint, or "gate theory" for pain control.  I can bet you 80-90% of the time, the next day, the pain was about the same or worse.

    Another factor to consider is how acute, or recent, the injury or pain started.  If it has been less than 2 weeks, definitely ice...... and even if it's been up to 6 weeks, I'd say ice more than heat, because the healing process is still in progress.  And if it is still a problem after 8 weeks, then a trained professional should really take a look at it and diagnose it to get the proper medical treatment.

    COLD/ICE PACK TIPS:

    1.  If you're using real ice, make sure you have at least 1 thin to medium thickness towel or sheet between the ice and your skin.  You don't want to run the risk of getting an ice burn, too!!  Old pillow cases work wonders as a barrier layer.

    2.  Ice should remain on the injured area until it feels numb.  With a smaller body part, it may take less time versus a larger body part, i.e. wrist versus knee.  You will most likely experience 4 sensations when you apply the ice pack...... First, it will feel COLD; followed by STINGING, then BURNING; the last stage is NUMBNESS. At the point, you can take the ice pack off because anything more will do no good.  This process usually takes anywhere between 5 to 20 minutes depending on the body part.

    3.  If you're low on money and need an easy solution, look in your freezer and just like the cartoons, grab the nearest frozen steak!!  Just kidding...... but do look in your freezer and look for some frozen veggies, preferably peas, corns or cubed carrots just because they all mold easily to most body parts.  Once you're done with them, just throw them back in the freezer.  Just be sure to label it and remember not to eat them.... (unless you really want to).  

    4.  People with circulation issues or difficulty with sensation should NOT use ice!!!




    Hope this information is useful and helps everyone make a better decision.  Please give me feed back and/or other ideas to write about!!!  Thanks for reading......

    Dr. J Wong