
Preventing Over-Training - Taking Time to Rest
by
Jessica
on Mon 09 May 2005 05:08 PM EDT
I could write a novel on this subject - well maybe not - but atleast a few dozen posts. I came across this article in the Running Times Newsletter with some interesting facts on letting your body rest. I thought I would share it with you.
As I learned, real loss does not come until the third week of time off.
The Effect of Rest
Concerned that you've just missed some training? Or, conversely, have you been training so hard that you're feeling exhausted—or worse yet, sore—every time out? Rest is a critical component to your training plan, so break the habit of viewing a day off as a failure.
If you're feeling sore, tired, or under the weather, a rest will allow your body to heal and recover, allowing you to attack your next phase of training with renewed vigor. Even if you're feeling fine, but have been training hard for an extended period, a rest can provide a much-needed mental and physical break from the rigors of running every day.
According to Pete Pfitzinger, there's no need to worry about losing fitness during a short rest. If you're out of action for an extended period of time, though, a number of adaptations will take place. As he wrote in his Pfitzinger Lab Report, "After two weeks off, VO2 max and performance typically slip less than 2%. During the third week, however, detraining's effects kick in. By the fourth week, significant physiological changes have occurred." In addition to a decreased VO2 max, your body will begin supplying less blood to the working muscles, and your muscles' ability to store glycogen will decrease.
If you find yourself forced to take some time off for reasons other than injury, Pfitzinger recommends replacing higher volume training with some high-intensity workouts, which will help you maintain that hard-earned fitness even when you can't train every day.