Did I Just Tear That? Muscle Soreness vs. Cramping vs. A Muscle Tear

Soreness in the calf muscles is a common complaint of people who are trying to adopt a natural running technique because of the extra stress that a midfoot or forefoot strike places on the calf muscles, and that's certainly proven true for me. When I first transitioned to natural running, I managed to avoid the calf pain many newbies report, but that's likely because I was taking it easy while recovering from a badly sprained ankle at the same time. Since then, every time I significantly increase my running distance, particularly if I'm running on pavement, I can expect several days of soreness in my calves.

Recently, my calf soreness has been unusually persistent. Perhaps it's because I've been trying to maintain mileage on my training runs (plus running to keep up with kids) instead of allowing my body's capabilities to catch up with the mileage I'm asking of it. Whatever the reason, my body decided to override my ambitions during a training run the other morning by subjecting me to severe cramping in my left calf muscle (triceps surae complex, likely the gastrocnemius) to the point where, at the time, it felt like the muscle was tearing. The sensation of tearing persisted as I walked home that morning and came back whenever I tried running a few steps over the next couple of days.

Not wanting to lose too much of the conditioning I had gained over the past few weeks, I tried to sort out the nature of my injury so I could have an idea of how to manage the recovery and how long I could expect the downtime needed to adequately heal. I obviously had soreness before and during the run, and obviously had a muscle cramp during the run. The real question, from the standpoint of recovery was: did I actually tear a muscle?

Diagnosing an injury isn't always clear-cut - even for a physical therapist or an experienced athlete. The human nervous system isn't very good at pinpointing an exact source of pain. On top of that, our brains are pretty good at forgetting the details of past pain, and our body composition changes over time (for example, collagen becomes less elastic as we age), making it difficult to compare a current injury to one experienced decades ago. With that in mind, I decided to refresh my knowledge of muscle soreness, muscle tears, and how muscle cramps factor into all of this.

Muscle soreness alone is actually a pretty complex phenomenon from a physiological standpoint. Muscle soreness, sometimes called delayed onset muscle soreness (DOMS), arises from microscopic muscle damage during strenuous activity, triggering an inflammatory response, increased blood flow, chemical changes including the release of inflammatory mediators, swelling, and nerve sensitization; collectively resulting in a sensation ranging from discomfort to outright pain.

By contrast, though it shares the above physiological factors with muscle soreness, the injury of a muscle tear, or strain, itself is relatively easy to understand: A muscle tear occurs when the muscle fibers are pulled apart due to excessive stress, over-stretching, or cramping.

It turns out that muscle cramping is a bit more complex than simple soreness or a muscle tear. Muscle cramps involve sudden, involuntary muscle contractions due to factors that may include nerve hyperactivity, electrolyte imbalances, dehydration, muscle fatigue, reduced blood flow, stretch reflex abnormalities, medications or health conditions, age, and physical condition. Note that any one, or a combination, of the above factors can be the cause of a cramp. It makes sense that muscle cramping should be able to cause a muscle tear. Since a cramp is an uncontrolled muscle contraction, when the force of the contraction exceeds the tensile strength of the muscle, the result would have to be a torn muscle.

Given the fact that my sensation of tearing lingered even after the cramp had calmed down and after I had stretched and rubbed the muscle, I feel it was likely a tear. Though to be fair, considering that there was no visible swelling or bruising, it wasn't too painful to walk on, and it healed as quickly as it did (several days), it could not have been a bad tear.

In my review of muscle strains/tears, I also learned that mild tears may necessitate several weeks of healing, while more extensive tears could require several months and that there are some things that can speed up recovery, including avoiding activities that aggravate the injury, application of cold compresses, use of nonsteroidal anti-inflammatory drugs (as directed by the instructions on the bottle or a medical provider), and tailored rehabilitation exercises.

The astute reader will notice that I recovered over the course of days, instead of the weeks or months that my research said I should require. So why the difference? While no one, health professional or individual experiencing an injury (of which I am both in this case) can have complete knowledge of the nature of an injury or exactly what is going on during recovery, it's helpful to have a theory. In this case, both the pain and underlying physiology associated with the muscle soreness in my calves likely made me predisposed to cramping, and as hinted at above, the cramp consisted of a muscle contraction sufficiently powerful to tear the muscle fibers in my calf. So pushing through the muscle soreness set me up for the cramp. One way of interpreting this is that my body was protesting my attempt to push it past what it was able to safely do at the time. Another likely contributing factor is that muscles that are in pain will sometimes spasm in an effort to protect underlying structures from greater trauma and create more pain in the process. This can become a self-reinforcing phenomenon that sometimes causes pain to persist even after the underlying injury has healed. I've experienced this myself, and I'm pretty sure it's been the source of pain in many of my patients.

Fortunately, there's a lot of overlap when it comes to preventing excessive muscle soreness, muscle tears, and muscle cramping. Here are some tips:

- Warm-up routines and stretching can help to maintain flexibility and reduce the risk of a number of different types of injuries.

- Gradually increasing exercise intensity and duration allows muscles to adapt to progressively increasing levels of stress.

- Targeted strength training exercises can also be used to focus on muscle groups prone to soreness and tearing.

- Maintaining good posture and technique during exercises can help prevent excessive stress on muscles.

- Listen to your body: Pay attention to pain or discomfort during workouts, and stop if needed to avoid injury.

Clearly, I need to pay attention to this advice, but part of the point of this blog is to allow the reader to learn from my experiences, even if some of those experiences are mistakes.

So, we've reviewed what I did wrong that led to injury, but what did I do right to recover so quickly? First, aside from running a few steps to test the status of the injury, I didn't push myself over the days following the muscle strain. On the other hand, I still remained reasonably active with walking, hiking, and some limited downhill running (keeping up with a young kid while hiking). The downhill running seemed to place minimal stress on the calf muscle, but I'm sure I was doing some things to compensate that would have led to a different injury if I did that too much. Additionally, I had some other things come up that interfered with my running routine during this time, which forced a longer recovery.

Also, I engaged in targeted exercise relatively early. Specifically, I found that my calf tolerated unilateral heel raises (standing on one foot while lifting the heel off of the floor and lowering it again in a controlled way), so I tried to do a set to form fatigue on each side several times a day. I did this with the intention of keeping the muscle endurance I already had, but it seemed to help work out the pain of the muscle tear as well.

In conclusion, my recent experience with calf soreness, cramping, and a potential muscle tear taught me valuable lessons about the intricacies of muscle injuries. It's clear that understanding the differences between muscle soreness, muscle tears, and cramps is essential for effective injury management. Whether you're a seasoned athlete or new to fitness, prioritizing muscle health and recovery can help you stay active and injury-free. Remember, if you encounter severe pain or uncertainty about an injury, seeking guidance from a healthcare professional is always a wise choice. Your body's well-being is worth the investment in proper care and recovery techniques.