Article View: rec.running
Article #1508Re: Running on consecutive days
From: jack berkery
Date: Fri, 08 Jan 1993 13:17
Date: Fri, 08 Jan 1993 13:17
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4618 bytes
> From: samari@watnxt2.ucr.edu (Tammy Woodley) > ... > I am curious about the effects of running on consecutive days. I figure > that it probably depends on how far and hard you run, but what are the best > combinations? Read the attached article below originally posted last August. > The reason why I ask is because I've been running every other day for about > 3 months now, and I am up to about 3.5 miles each time, with a small > increase each week. You are doing it right. This is rare, most people try to boost mileage in a crash program which leads to the chronic injuries which you hear them moaning about on the net every day. Stick with this basic plan, SMALL INCREASES EACH WEEK, and you'll never go wrong. > I would like to start running more often, but am not sure whether I > should do more speed or endurance work. That depends on your goals. Do you want to run some fast races? Then run faster, otherwise speed is of no consequence. Do you want to run/hike/ride longer distances? Then more endurance work is required. ------------------------------------------------------------------------------ Jack Berkery, Computer Scientist, GE Research, Schenectady NY (berkery@crd.ge.com) "The Common Sense Coach" ------------------------------------------------------------------------------ Another interesting article I read in "Running Research News" was about a study to find a good predictor for why runners get injured. It has long been assumed that the foremost predictor was mileage. As miles go up, so too does the risk of injury. This has become gospel in the running community so almost no one had ever bothered to question it. This study at the University of South Carolina followed 433 runners for 12 months who recorded their running in log books. 65% reported at least one injury which resulted in some loss of training time. Is this a surprise? No, not to me anyway. But a couple unexpected results did come out of the study. Mileage alone was not the first or even the second best predictor. The number one predictor for running injuries was whether they had been injured before. Number two was consecutive days of running. Let's look at those two. First, if you had been injured before, you are more likely to get injured again. Makes sense, no? Those who are prone to injury because of biomechanical imbalances or weaknesses in key support or muscular areas will tend to get injured again. Those who train in ways which increase risk of injury will tend to return to make the same mistakes again after healing. On the other hand, those who have never or rarely been injured before are not likely to get injured at all. Either they are built right for taking the stresses of training or they are training in ways which reduce injuries. The next best predictor was something none of us probably ever thought of. Consecutive days of training was a far better predictor than mileage itself. That is, those who trained 6 or 7 days a week were more injury prone than those who trained with more days off. Even among those who ran 5 days a week, those who ran more days in a row were more prone to injury than those who spaced them out. Say you run 5 days on and two days off and the next guy runs two on, one off, three on and one off again. Your risk of injury is higher. So it would seem that if you want to increase mileage more safely it's better to increase the length of each run instead of the number of runs per week. OK, now the bottom line. Wanna know why all this is so? REST, REST, REST! The time between the runs allows the body to recover from the pounding of the previous run. More rest, more time for the muscles to strengthen before being beat up again. With more consecutive days running week after week the body accumulates more micro-traumas which cannot be repaired in only 24 hours and these micro-injuries tend to build into bigger and bigger things which evenutally result in down-time. Hey, it sounds just like plain old Common Sense to me.
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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!crdgw1!rdsunx.crd.ge.com!emmax5!berkeryReferences:
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!crdgw1!rdsunx.crd.ge.com!emmax5!berkery From: berkery@emmax5crd.ge.com (jack berkery) Newsgroups: rec.running Subject: Re: Running on consecutive days Message-ID: <1993Jan8.131724.17875@crd.ge.com> Date: 8 Jan 93 13:17:24 GMT References: <24754@galaxy.ucr.edu> Sender: berkery@emmax5 (jack berkery) Reply-To: berkery@emmax5crd.ge.com (jack berkery) Distribution: usa Organization: GE Research Center Lines: 74 Nntp-Posting-Host: emmax5.crd.ge.com