I Ve Been An Avid Runner For About 25 Years,
Repeated muscle injuries or loss of stamina need micronutrients replacement
Detailed Answer:
Hi!
Welcome to 'Ask A Doctor' service.
Thanks for sharing your concerns with us. We will try to help you in the best way possible.
First of all, it's sad to know what you had been going through lately.
Based on the history you have shared, since you are experiencing sudden decline in stamina or related muscle injuries or spasms, you need to have detailed neurological examination for motor system of lower limbs as well as serum electrolytes levels and micronutrients deficiencies should also be ruled out with levels of calcium, vitamin D3, B12, and folic acid and replacement may be needed where necessary.
Also, serum potassium levels and magnesium levels should be kept in check. If these are unremarkable endocrine causes like thyroid profile and sugar levels monitoring may be needed.
Meanwhile, OTC analgesics like Acetaminophen or Ibuprofen can be helpful for symptomatic relief.
Wishing you a speedy recovery.
Regards