Welcome to Healthcaremagic,
From your query i understand that you may be suffering from Post Polio syndrome
PPS may be due to gradual deterioration of your spinal nerve calls due to the polio viral attack you had in childhood.
Currently there is no cure for Post Polio syndrome.
But Psychosocial support and Physiotherapy
Walking aids are useful for mobility.
But you have to check your ECG to rule out any angina or myocardial infarction
If necessary, do echocardiography
and X-Ray chest, USG abdomen to rule out other diseases.
Hope this helps.