1.    Introduction
Low back pain is a major social problem with high costs and health problems in industrialized countries. There are over 20 types of treatment for chronic low back pain. Achieving a therapeutic and rehabilitation program for faster recovery of patients with chronic low back pain has always been a concern. Punjab's theory states that vertebral instability is compensated by the dysfunction of bones, ligaments and muscles by the musculoskeletal system to maintain vertebral stability during functional tasks. The purpose of this study was to evaluate the effects of a series of core stabilization exercises with and without dry needling on pain and performance in patients with chronic low back pain. Chronic low back pain is a multifactorial phenomenon. Therefore, the existence of multiple attitudes towards its treatment is not unexpected. Some attitudes are not effective while others are supported, including specific muscle training. There are indications that the effects of activities such as exercise therapy on improving subacute and chronic low back pain are positive. The efficacy of current trunk exercises in which the abdominal and paravertebral muscles contract generally and at relatively high intensity has been reported. Sung has shown that stabilization exercises improve performance in patients with lumbar dysfunction, but fatigue in male multifidus muscles increases in contrast to women. On the other hand, Koumantakis et al showed that adding stabilization exercises to general exercises in non-specific subacute and chronic pain patients did not decrease disability.
Carnis et al have also shown that spinal stabilization exercises do not improve recovery in patients with low back pain. However, Goldby and colleagues, in contrast to two previous studies, found that stabilization exercises had a greater effect on pain relief in patients with chronic low back pain than on manual treatments and control group. Dry needling is a technique that has a great effect on myofascial pain in all parts of the body including the back. Research has shown that dry needling has a great effect on chronic low back pain. The dry needling can do its job by entering the trigger points (inserting the needle without injection). In the dry needling technique, the needle does not stay in place and is removed immediately and is not used at passive trigger points. As for passive trigger points, it should be noted that they should be improved by correcting ergonomic problems and stretching exercises. In 1983 Travell and Simon wrote a book in which all patterns of referral pain caused by trigger points were shown. The effect of acupuncture on back pain has been previously studied. To date, there have not been many studies on the effects of dry needling and stability exercises that we attempted to investigate in this study.
2.    Methods
36 patients, aging (31.67) weight (79.63) suffering from non-specific low back pain were randomly selected through Quebec Questionnaire and were categorized into 3 groups titled experimental 1 (n= 12), experimental 2 (n=12), and control group (n=12). In experimental 1, the patients practiced the specific exercises. In experimental 2, the patients practiced the specific exercises along with dry needling. Oswestry disability index and Visual Analogue Scale (VAS) test, were respectively used before the exercise and dry needling, right after six weeks of exercises was over, to assess performance and assess the back pain. A detailed descriptive and inferential analysis was applied to assess the research variables. Kolmogorov Smirnov test was used to investigate normal distribution of the data. In addition, repeated measures analysis of variance (ANOVA) and paired t-test were applied to data in SPSS (v. 20) to analyze the statistics, setting the significant at P <0.05.
3.    Results
The results of the study showed a significant improvement in pain and performance of patients in experimental groups following stabilization exercises alone and with dry needling compared to the control group. But no difference was observed in patients in the control group.
4.    Conclusion
It can be concluded that core stabilization exercises with dry needles have a significant effect on both reducing pain in patients with chronic low back pain and improving performance. The effect of stabilization exercises with dry needling is superior than stabilization exercises alone; therefore, it is recommended that stabilization exercises with dry needling be considered in the treatment plan of patients with chronic low back pain.

Ethical Considerations
Compliance with ethical guidelines
There were no ethical considerations to be considered in this research.
Funding
This research did not receive any grant from funding agencies in the public, commercial, or non-profit sectors.
Authors' contributions
All authors equally contributed to preparing article.
Conflicts of interest
The authors declared no conflict of interest.