question: Hello Doctor, my father has COPD and is taking Duova inhaler for a year now. He has lost considerable weight with current weight of 46 kgs only. He is not able to walk around for more than few steps at a time. He has to take Oxygen most of the time. What can be done to improve his mobility. Pls adviceIt is suggested to get some steriod injection to improve his leg muscles. is it advisable?