A reply to the questions regarding to the article 'effect of lumbar stabilization and dynamic lumbar strengthening exercises in patients with chronic low back pain'.

摘要: We appreciate your interest in our study. In this study, we did not focus on lumbar extensor strength. Our interventions were consisted of trunk extensor, flexor, and rotator muscles Isolated strengthening machine MedX (MedX Holdings Inc., Ocala, FL, USA) was used to compare superficial deep spinal strength between baseline post-intervention. You pointed out the similarities stabilization dynamic exercises. In exercise method two groups, posture somewhat similar picture. But text, described that "before each exercise, physical therapist gave detailed verbal explanation visual instructions, regarding start end positions." All exercises conducted according following specific principles: "breathe out, gently slowly draw lower abdomen below umbilicus without moving upper stomach, back or pelvis". addition, group subjects practiced 'abdominal hollowing maneuver' with a providing instruction tactile feedback until they able perform maneuver satisfactory manner [1,2]. We thought should include as well neuromuscular control endurance these muscles. Conventional activate erector spinae rectus abdominis muscles. You mentioned floor ball based had little evidence conditioning effect However, floor- ball-based are commonly referred stability many studies [3,4]. I would like answer question follows: 1) Can other than isolated extension (ILEX) condition extensors (e.g., improve ILEX strength) symptomatic participants, 2) Does provide greater improvements strength, pain disability participants? At present, there is no study has compared training directly. Therefore, it difficult say which more effective. my opinion, most appropriate for chronic LBP. That why Nachemson Linch [5] showed increased muscle activity, but loading compression low affects injury tissue. It can cause deteriorate symptom. Some researchers demonstrated traditional methods deficiencies stabilizer make an incorrect compensation. also changes proper coordination pattern recurrence [6,7]. pathogenic mechanism ensuring. treatment various results study. Generally, clinical guidelines recommend rather rest. Today, programs designed core popular increase athletic performance treat pain. Movement patterns altered by faulty flexibility, fatigue from poor endurance, abnormal neural eventually tissue damage. Tissue damage lead decreased structures, challenges already inefficient perpetuation degenerative cascade. Spinal could be compromised motor errors muscular inter segmental allow overloading passive tissues. Patients seem over-activate global whereas activation impaired. Thus, have strong theoretical basis prevention different musculoskeletal conditions disorders [8]. Although great deal research shown general effective pain, much needed specifically addresses if types treating pain. 3) Whether indeed any relationship improved result disability. I think improvement contributing decrease disability. The optimal considering individual characteristics.