When you use muscles you have not used for a while or try a new exercise or training technique, it is normal to feel a dull ache of soreness in the muscles that were trained-I get sore every winter from skiing, snowboarding and snowshoeing-every winter that there’s snow, anyway. This pain is caused by microscopic tears in the fibers of the connective tissues in your body--the ligaments that connect bones to other bones, and the tendons that connect muscles to bones.
This microtrauma may sound harmful, but is the natural response of your muscles when they experience work. This is the primary reason it is so important that you get enough rest between specific muscle workouts. Each time you work out with weights, you cause this "damage"--these tiny tears in your muscles; they need ample resting time to rebuild and become even stronger, bigger, and more firm.
The reality is that soreness is a very poor indicator if muscle growth is occurring. If you worked at a level that demonstrates overload you will cause muscle growth. In fact, muscle soreness on a consistent basis can be a sign of doing too much work and leading you down a path of overtraining. Many top athletes train without any desire to experience muscle soreness as it impedes their ability to perform.
Your lack of soreness may be due to a lack of intensity :just because you’re lifting the most that you can now doesn’t mean that you’re lifting the most that your muscles can. I take it from your other posts that you’re ailing, and you’ve actually been able to lift more in the past. I know a little (well more than a little) about working out while debilitated by illness. These weights might not be your one-rep maximum. If your doctor says it’s okay (or even good) for you to lift weights, determine what your one-rep maximum is for those exercises, and use about 70% of that for exercise…..if you can, I’d also recommend body-weight exercises like push-ups and pull-ups to failure. Cheat on these if you have to.
Talk to the doctor, though.....
Aaron J. Cuffee
As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron.
- H.L. Mencken