There is a training method to avoid getting muscle knots.
Pavel Tsatsouline talks about the phenomena of avoiding knots by limiting strength training to maximal outputs. You’ve probably heard about slow twitch fibers and fast twitch fibers. Slow twitch muscle fibers are small, weak, and activate slowly, but can work for very long periods. Fast twitch IIX are large and activate fast, generating high power for flashes of time. Fast twitch IIA is in between these two.
Basically, we all have muscles that shoulder handle a variety of tasks at a range of loads. You can push a two thousand pound car down the road for a short distance, and you can also text with your thumbs unendingly.
Strength training with kettlebell swings involves a small load with maximal force. It does not require a person to lift the largest possible weight they can lift. It also isn’t so light that the exercise can be done without end. There’s a balance. The muscle fiber most active during this sort of exercise is the fast twitch IIA.
“When your reps slow down, it is the best indicator your IIA fast fibers have had it, and slow type I fibers are doing most of the work” (Kettlebell Simple and Sinister).
The problem is that slow twitch fibers, when strained with too much load, can spasm. These fibers are located closer to the bone and deeper inside muscle fiber groups. The conclusion in S&S is that exercising beyond the point of maximal output puts these slow twitch muscles into exhausted spasms. Thus, deep knots.
I am currently putting this statement to the test over the past week with kettlebell swings. I have had a knot in my shoulder blade for a while. It comes and goes, particularly when I eat wheat. However, I found that some days it would come back even though my diet was clean. I thought it had something to do with my shoulder mechanics, but I couldn’t figure out how to address it.
Revisiting this concept of muscle fibers, I tried to modify my behavior during swing sets. It was a little tricky, because at first glance it seemed that I needed to give full effort all the way through to the last repetition. However, this meant that I was still doing ten repetitions per set. And on some sets, I would get tired on the last swings.
Then I tried to limit my swing sets to only the best swings. This was difficult at first, because I had to really tune in to the difference between maximal output and maximal effort. It was easy to fool myself into thinking I was generating full force just because I was giving full effort. But over time, I started to see the difference. If I noticed any slow down or reduction in force, I stopped.
Guess what? It’s working. My shoulder is feeling much more relaxed in the past few days, despite the fact that I’ve been doing swings, getups, and other exercises on a daily basis. The difference is that I’m stopping my sets short when my output decreases. This means that I’m doing fewer reps on many of the swing sets.
So I guess I was pushing a little too hard before. It’s going to take some time to get back to 100 swings, but I think it will lead to much better results.