Off the top of my head, I don't know of a easy fix. It's representative of a larger problem. Aging and everything that comes with it is natural, but can be slowed down a little. After 35, our muscular strength slowly begins to taper off. You might find that one alternative is to look at beginning a mild strength training or exercise program. Nothing over the top, but resistance training will do wonders to preserve muscle tone into old age. If used the right way, it can enhance your life quality. There's no good way to get around proper nutrition and proper exercise, and you can make both a fun and natural part of your life.
One other consideration, as important as the others is maintaining flexibility. The low back is extremely important. As we age, and sit too much in our chairs, the low back becomes more and more rigid and locked. Injury here is devastating. You might want to look at mild stretching and possibly yoga to increase your muscle tone and improve your flexibility. Maintaining a flexible low back and shoulders will keep you moving well as you age. A lot of the yoga training (and you can adapt it to your level with a good instructor), will also provide balance training that helps into your old age also. The ability to hold your balance on one leg is a measure of aging in Dr. Ray Walford's longetivity studies. One of my old teachers is in his 80's and he is more flexible than I am, and has no health problems. I have been learning a tremendous amount about aging and health from him.
This last notion is a stretch from your question, so I apologize for any drift on the thread. But in a way it's not. Meditation does wonders for our health. Anger and negative emotions stagnate in the body and form tensions. Yoga helps to address this and remove the blockages, as does meditation. I'm not suggesting something as far fetched as to say meditation will help you get up from your kneeling position, but in a larger dimension, it will help to deal with the inevitable negative emotions that affect our health. It's not always a large noticable thing, it's the small doses of bad stress that can add up, for me it's learning how to not get mad when commuting back and forth to work while watching people cut others (or me) off.
Come to think of it, I do have an idea, let me do another post. sometimes I lose what I type on this laptop.
