I’ve been asked questions about delayed onset muscle soreness (DOMS) for years, and lately have received more questions about DOMS than ever, so obviously people are fascinated by this subject and many are concerned about the implications. Some people wonder exactly what causes DOMS, others want to know how to reduce the pain, a few want to know how to avoid it completely and then there are a few “odd ones” who want to know how to get more sore! (Know anyone like that?) In today’s Burn the Fat Blog post, I will answer some of these commonly asked questions about DOMS…
A Burn the Fat, Feed the Muscle reader recently asked me this great question about muscle soreness after weight training:
muscle-cell-DOMSQ: Dear Tom, I’m confused about delayed onset muscle soreness (DOMS). I’ve read a lot about DOMS. So far, I learned that it occurs especially from eccentric muscle contraction, which is lengthening of the muscle fibers. I also read that DOMS is a type of micro-trauma to the muscle fibers. My question is, what does this say about your training? Does it tell us that our exercise is being properly done in terms of intensity, load, volume and so on, or is it telling us we pushed too hard or we’re over-training and should pull back? In other words, to make a long question short, is DOMS good or bad for you?
Out of all the questions I’ve received about DOMS, this question is the most important one: What does DOMS tell us about the effectiveness of our training (and is that good or bad?)
Short answer: DOMS is not a good or bad thing inherently, because it could be a positive or a negative signal. It could be associated with a great workout that stimulated muscle growth, or it could be a sign of over-training or inadequate recovery, not to mention the pain can be debilitating and interfere with subsequent workouts or even activities of daily life (thus, the funny facebook meme photos of people using walkers, wheelchairs and other assisted-movement devices after leg day).
For that reason, I wouldn’t recommend considering DOMS a sign of a good workout or a sign that muscle growth is on the way, only as a sign that muscle damage occurred during your workout.
Now for the long answer, based on all the current science, plus a few opinions of my own, from the perspective of a bodybuilder (aka “meathead”).
Is Delayed-Onset Muscle Soreness Good or Bad? A Closer Look…
DOMS is caused by intense exercise, especially resistance training such as weight lifting. It’s true that the eccentric part of a resistance exercise (where you lower the weight and the muscle lengthens) has been linked to greater DOMS compared to concentric movements and isometric contractions (so if you wanted to get more sore, eccentric-emphasis training would be one good way to do it).
Exercise physiologists have known for many years that eccentric muscle actions lead to more DOMS and they also have a pretty good idea why. Overall, eccentric training causes greater muscle fiber and connective tissue disruption and greater release of enzymes associated with muscle damage. Muscles performing eccentric actions also rely more on type II muscle fibers and type II muscle fibers are more susceptible to damage than type I muscles fibers during eccentric actions.
Damage occurs not only to the muscle fibers themselves, but also to the muscle cell membrane, known as the sarcolemma. This is caused by extensive free calcium within muscle fibers. Calcium activates lysomal protease and proteolytic enzymes which damage muscle fiber proteins and structures within the muscle fibers, including the troponin, tropomysin and Z-disks. The actual pain felt as DOMS may not be the muscle fiber damage itself, it may be the edema, swelling and inflammation.
At first, the idea that you are damaging your muscles by weight training and other intense forms of exercise doesn’t sound like a good thing at all. However, breaking down or damaging the muscle structures is actually a part of the muscle growth and strength-building process. You break it down and re-build it, bigger and stronger than before. Feeling soreness after the workout may be an indicator of that breaking down and re-building process.
Brad Schoenfeld, a prominent researcher on the mechanisms of muscle hypertrophy, author of The MAX Muscle plan, and a former competitive bodybuilder says:
 “A certain amount of soreness may indirectly benefit muscle development. The response can be likened to the acute inflammatory response to infection. Once the body perceives the damage, immune cells (neutrophils, macrophages and so on) migrate to the damaged tissue in order to remove cellular debris to help maintain the fiber’s ultrastructure. In the process, the body produces signaling molecules called cytokines that activate the release of growth factors involved in muscle development. In this roundabout way, localized inflammation – a source of DOMS – leads to a growth response that in effect, strengthens the ability of muscle tissue to withstand future muscle damage. Adaptation!”
I believe that a moderate amount of DOMS – a soreness in the muscles you last worked that’s noticeable but not debilitating in any way, correlates with a good workout and correlates with muscle growth, provided all the supporting factors are in place for muscle growth to occur. Those include recovery, adequate caloric intake (surplus), adequate protein, the right hormonal environment and so on.
I cautiously emphasize “correlates” with good workouts that produce muscle growth because:
A) You can get sore and not experience growth or strength increase.
B) You can experience growth and strength increase having not been sore.
You might want to read those two points again, and pause to let them sink in if they didn’t click together instantly the first time.
In other words, getting sore after a workout is NOT a prerequisite for seeing muscle growth. Furthermore:
C) You can be so extremely sore that it indicates a degree of muscle damage you cannot recover from, which may mean no growth and decreased strength.
 Adaptation and the DOMS Cycle
Soreness is usually the most severe for beginners, but you will probably experience soreness your entire training lifetime, each time you start a new workout program. As your body gets accustomed to one particular workout, the degree of soreness subsides. Whether that’s within a couple of workouts or a couple of weeks, eventually the same workout may no longer get you sore at all (unless you’re intentionally finding ways to introduce new muscular stresses every workout).
You have probably been told by almost every trainer you ever consulted or read, that your body adapts to workouts. Therefore, to keep making progress, you should change your workouts on a regular basis to keep re-stimulating or “shocking” your body. So when you switch to a new workout, lo and behold, you get sore again, and this correlation appears to prove that theory about training adaptation.
The cycle looks like this: Beginner starts training – YEOW! Super sore! —-> soreness subsides after a few workouts —> you change workout program —-> you get sore again —-> the soreness subsides after a few workouts —-> you change your workout program again —-> you get sore again… and so on.
This cycle of getting sore, and no longer getting sore is one of the things that prompts so many questions about DOMS. It naturally makes you wonder if not feeling sore anymore means your workouts are no longer effective. Some people say they never get sore and wonder if they’re doing something wrong. Others are always excruciatingly sore, and they too wonder if they’re doing something wrong. Let’s address these questions.
If You Stopped Getting Sore, Have Your Workouts Stopped Working?
If you ‘re wondering whether your workouts are no longer working if you are no longer sore, the answer is no, not necessarily. If you are still making progress on the same workout (strength is increasing, you’re noticing improvements in body composition, muscle size, etc), your workout is working, isn’t it? If you’re one of those individuals who never seems to get sore, the same principle applies.
That’s why you should not use muscle soreness as your sole indicator of workout effectiveness. The sign of effective workouts is whether you made visible and measurable improvements in muscle growth and strength. Period. In other words, getting sore is not the goal – GETTING RESULTS IS THE GOAL. Was your workout effective? You tell me – did you gain muscle or strength? Do you look better? If so, your workout was effective whether you were sore or not. If someone is bothered by the fact that they are never sore, yet they are making great progress, that infatuation with soreness is purely psychological.
DOMS is more like a side effect of strenuous workouts rather than the goal of a workout. With that said, let me repeat what I said earlier, which is backed up by the science: I believe DOMS does correlate – fairly reliably – with good workouts, at least when the goal is hypertrophy or bodybuilding.
Some trainers disagree that DOMS should be looked at in a positive light. They may dismiss any association with muscle growth as myth or “bro-science” (what “meat head” bodybuilders believe purely from experience). The idea that there is any positive aspect to feeling sore has also been been criticized by strength and conditioning coaches.  In that context, their concern has real merit. “You Gotta Play Hurt” may have some truth to it (and makes for a great sports novel), but the fact is, the coach needs his athletes spry and springy every day for practice and frequent workouts and games, and not limping around all week. That makes perfect sense, which is one of the many reasons that athletes generally don’t train like bodybuilders.
Bodybuilders often intentionally set up their programs to maximize muscle damage and microtrauma – they train for higher tension, they control or even exaggerate their eccentrics and they set up training parameters to increase metabolic stress (tension, muscle damage and metabolic stress are known mechanisms for muscle hypertrophy).
Downsides of DOMS And Cautions For Beginners
If this sounds like it’s all upside to the bodybuilder for soreness, it’s not. Extreme soreness can indeed be a sign that you overdid it. This is common with beginners and can be a real de-motivator. In fact, beginners should be aware of DOMS before they start training, otherwise it can be quite a surprise – sometimes unpleasant – and they simply don’t know what to think when it happens. They’re not sure if they’re injured and sometimes even quit, while protesting, “If this is what working out does to you, forget this whole exercise thing!”
Extreme soreness can prevent you from effectively completing your next workout, and if that happens, obviously it’s not a good thing. If you can’t walk up or down the stairs after lower body day or comb your hair after upper body day, you’ve pushed too far, possibly beyond your body’s ability to repair the damaged muscle, and that means no muscle growth. If you’re an athlete and you can’t play the game because you’re “crippled” from the workout you did a day or two earlier, you’ve defeated the whole purpose of training for sports. So get the idea out of your head that extreme DOMS is a good thing. It’s not.
One more thing is good to know about DOMS: Individual responses vary dramatically. DOMS usually begins as early as 8 to 12 hours after training, increases for 24 to 48 hours and peaks 48 to 72 hours afterward, then begins to subside. But studies show that in some individuals, it can last 8 to 10 days! Depending on the severity, eccentric muscle strength can actually decrease during this period.
Some people seem especially prone to excessive muscle soreness (part of your body type/genetics), and there have been cases studied where recovery was not complete for 26 days. In the most extreme scenarios, three percent of individuals may suffer from rhabdomyolysis after an extraordinarily strenuous exercise bout. This is a degeneration of the muscle cells, producing myalgia, muscle tenderness, weakness, swelling and dark-colored urine. In addition to the pain, this causes a loss in the muscle’s ability to produce force.
What’s the Bottom Line?
Light or moderate amounts of DOMS may generally be viewed as a good thing, or at least as a normal thing, especially for the bodybuilder / muscle-size seeker, as long as it doesn’t interfere with subsequent workouts or daily life. And let’s face it, in a “twisted” kind of way, we bodybuilders and serious resistance training people not only don’t mind a little soreness, we kind of like it! It gives us some very immediate feedback that we did something, probably good, and being able to “feel” your muscles in between workouts, I could argue, has some psychological benefits too.
But it should also be clear by now that the goal of your workouts is not to pound yourself into the ground and see how sore you can get. The goal of your workouts is to gain muscle, get stronger and get in shape. If you could achieve that goal without ever feeling sore, for some people, that would be the best outcome of all. For most of us, however, we need to understand what DOMS is and get used to tolerating a little bit or (oddly), enjoying it, whichever the case might be.
Postscript: There is a rumor going around that, “If you don’t like limp-producing muscle soreness, and you like being able to get up and down stairs, don’t train legs with Tom Venuto.” No idea how that one got started…. :-
What do YOU think about DOMS? Do you experience it all the time, often, occasionally, never? Do you like it, hate it or just tolerate it? Post your comments below!

References
Clarkson PM et al, Muscle function after exercise-induced muscle damage and rapid adaptation. Medicine and Science in Sports and Exercise. 24: 512-520. 1992.
Ebbeling, CB and Clarkson, PM, exercise-induced muscle damage and adaptation. Sports Medicine 7:207-234, 1989.
Fleck SJ, Kraemer WJ, Designing Resistance Training Programs, Third edition. Human Kinetics, Champaign, IL, 2004
Frieden J, et al, Myofibrillar damage following intense eccentric exercise in man. International Journal of Sports Medicine 4: 170-176. 1983
Schoenfeld, Brad, The Max Muscle Plan, Human Kinetics, Champaign, IL. 2013.
Schoenfeld, Brad, Does exercise-induced muscle damage play a role in skeletal muscle hypertrophy? J Strength Cond Research, 26(5): 1441-1453, 2012. Exercise science Dept, CUNY Lehman College, Bronx, NY.
Talag, TS, Residual muscular soreness as influenced by concentric, eccentric, and static contractions. Research Quarterly 44:458-461, 1973.


tomvenuto-blogAbout Tom Venuto

Tom Venuto is a natural bodybuilder, fat loss coach, fitness writer and author of Burn The Fat, Feed The Muscle. Tom’s articles are published on hundreds of websites worldwide and he has been featured in Muscle and Fitness, Men’s Fitness, Oprah magazine, The New York Daily News, The New York Times and the Wall Street Journal. He has appeared on dozens of podcasts and radio shows including Sirius XM, ESPN-1250, WCBS and Day  Break USA. Tom is also the founder and CEO of the premier fat loss support community, the Burn The Fat Inner Circle


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