Resistance training works by causing microscopic damage or tears to the muscle cells, which in turn are quickly repaired by the body to help the muscles regenerate and grow stronger. The breakdown of the muscle fiber is called "catabolism," and the repair and re-growth of the muscle tissue is called "anabolism." You're probably familiar with the term anabolic when used with steroids . Anabolic means to grow, and that's exactly what happens after you break down the muscle fibers with resistance exercise. In fact, many biological processes of growth in the body require some breakdown, or catabolism, prior to re-growth. For instance, bones must be broken down first before calcium and other growth factors repair the bone and make it stronger. With muscles, testosterone, insulin-like growth factor, growth hormone, protein, and other nutrients rush to the muscle after a resistance-exercise session to help repair the muscles to make them stronger. Importantly, your muscles heal and grow when you aren't working out, and so that's why it's necessary to leave time between workouts for recovery.
Fig. 2 —Case 1. Certain symptoms are attenuated following treatment with low-dose naltrexone (LDN) in a long-standing case of CRPS (6 years after onset). a. Allodynia is greatly reduced in both legs after LDN. However, bilateral trophic changes remain in the lower extremities. Slight swelling is present in the distal portion of the right foot. Within 2 months of treatment with LDN, the patient was able to bear full body weight, and walk without assistance. Before LDN, the patient utilized a cane for 6 years. b. One year after LDN treatment, the patient still has persistent long-term trophic changes in the skin of both lower extremities (taken 1/16/2013)
Oral steroids enter the bloodstream to get to the lungs, so they can cause these and other systemic effects, particularly if used frequently or for long periods of time. Other effects include cataracts, increased blood sugar, lack of blood supply to some bones and suppression of the body's own production of steroids needed during stress. Since inhaled steroids reduce the amount of oral steroids that may be needed for asthma, they may be safer than just using as needed mediation in all but the mildest forms of asthma. If your child is given many courses of oral steroids, careful monitoring for some of these side effects may be necessary.