Irritation of nerve root will lead to spasm in the muscle along the nerve root if you have disc bulge along with nerve root irritation or local back pain without nerve root irritation. So incase your nerve root involvement all muscles along the nerve root get into spasmodic mode,you feel tightness,pain along the muscle.If you have only local back pain then back muscles, lateral leg muscles and gluts muscles are generally tight and psinful.But a thorough examination by physiotherapist is important.
Next Steps
Ask your physiotherapist to frame exercise which best suits you.It is not like that everyone do extension exercise.The exercise which decrease you pain suits best for you whether extension exercise or flexion exercise, according to mecKenzie model of derangement ( A evidence based approach)
Health Tips
Follow your therapist instructions of do's and don'ts.
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