30 patients with non-radiating low back pain for at least three months and normal neurological examination received treatment electro-cupuncture at traditional points for 10 sessions over 4 weeks, electroacupuncture was administered once per session, three sessions per week, on alternate days, with rest on Saturdays and Sundays. Visual analogue scale (VAS) will be recorded after 1 session, 3 session, 5 session, 7 session and 10 session. BPI index and Trigger point count will be recorded after 1 session, 5 session, 10 session.

30 patients with non-radiating low back pain for at least three months and normal neurological examination received treatment electro-acupuncture at the Trigger point for 10 sessions over 4 weeks, electroacupuncture was administered once per session, three sessions per week, on alternate days, with rest on Saturdays and Sundays. Visual analogue scale (VAS) will be recorded after 1 session, 3 session, 5 session, 7 session and 10 session. BPI index and Trigger point count will be recorded after 1 session, 5 session, 10 session.

Electroacupuncture at Trigger Points is electroacupuncture at predetermined trigger points. Electroacupuncture at traditional acupoints is electroacupuncture at the following points: Jiaji (L2-L5), Yaoyangguan (GV3), Shendu (BL23), Dachangdu (BL25), and Weizhong (BL40).

With the VAS, participants were asked to make a hatch mark on a 100 mm line that represents their average pain intensity. These were then converted to a numerical score for each face (i.e. 0, 2, 4, 6, 8, or 10), depending on the face selected. The end-point descriptors for VAS was "No pain" (0, 0 mm, and the face representing no pain, respectively) and "The most intense pain imaginable" (10, 100 mm, and the face representing the most intense pain level, respectively).

The BPI gives two main scores: a pain severity score and a pain interference score. The pain severity score is calculated from the four items about pain intensity. Each item is rated from 0, no pain, to 10, pain as bad as you can imagine, and contributes with the same weight to the final score, ranging from 0 to 40. The pain interference score corresponds to the item on pain interference. The seven sub-items (general activity, mood, walking ability, normal walk, relations with other people, sleep, and enjoyment of life) are rated from 0, does not interfere, to 10, completely interferes, and contributes with the same weight to the final score, ranging from 0 to 70. The first item, pain drawing diagrams (painful and most painful areas) and the items on pain relief treatment or medication (list of the treatments and amount of relief) do not contribute to the scoring. It takes approximately 5 minutes to complete the BPI.

Determine the number of trigger points at each survey time.