What Causes Loss Of Motor Control At An Elderly Age?

Hello and thank you for your question! I hope that my answer will somehow clarify your situation. From the information you have provided and in absence of other related health conditions, the most plausible explanations seems to be the deterioration of motor functions/control due to the natural process of aging. There are numerous scientific studies which state the declining of cognitive and motor abilities and control with advancing age, even in the absence of specific diseases. This is a natural process even though its level varies somehow between individuals. The decline of motor control with age is explained by numerous mechanisms which are very specific and of no interest to you at this point, but one of the most interesting findings is that the brain adapts to these changes through the engagement of other areas normally not dealing with motor control. In other words, as aging advances and motor control deteriorates, the brain involves more parts of it to coordinate motor and cognitive control. In this context, it is important to know what to do in order to delay/prevent or ameliorate the consequences of such natural process. Researchers suggest that physical activity is very useful as it prompts the brain to involve more parts of it in motor and cognitive control and exercising older adults have better motor control compared to their counterparts not involved in physical activity. I think that this part could be easier for you as you have been involved in tennis for years, as you stated. Now you have to adapt your level and intensity of the physical activity to your new situation. Important is not to be sedentary. In close consultation with your doctor, you can consider taking some medication which could enhance motor and cognitive functions, such as dopamine agonists or other neurotransmitters, proven to have beneficial effects in these regards. I hope that my answer has helped you somehow and I wish you good luck!