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Manipulation of the sacroiliac joint normalized different types of clinical test results but was not accompanied by altered position of the sacroiliac joint, according to roentgen stereophotogrammetric analysis. Therefore, the positional test results were not valid. However, the current results neither disprove nor prove possible beneficial clinical effects achieved by manipulation of the sacroiliac joint. Because the supposed positive effects are not a result of a reduction of subluxation, further studies of the effects of manipulation should focus on the soft tissue response.

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The aim of this study was to identity levels of workplace bullying based on cut-off scores, frequency and self-labelled victimization, and to use these levels to identify the escalation of workplace bullying in terms of onset of different negative acts. Data were collected from a representative sample of the Swedish workforce (n = 1856). Bullying was measured using the Negative Acts Questionnaire-Revised together with self-labelled victimization based on a definition. Other variables included aspects of work experience, perception of the organization, and health and well-being. The results showed differences between the suggested levels of workplace bullying (Risk for bullying and Incipient bullying; Ongoing bullying; and Severe and Extreme bullying) for these variables, and also that different areas were pronounced at different levels of workplace bullying. Further, the onset of different negative acts depended on the level of workplace bullying, at early stages only work-related negative acts, but at higher levels more person-related negative acts. The study contributes to the understanding of workplace bullying and the escalation process. The suggested new levels of bullying also have practical and pedagogical value making it easier to grasp and to convey to, e.g. HR personnel, and organizational psychologists. ARTICLE HISTORY

Background Traction is used to treat low-back pain (LBP), often with other treatments. Objectives To determine traction's effectiveness, compared to reference treatments, placebo, sham traction or no treatment for LBP. Search strategy We searched CENTRAL (The Cochrane Library 2006, issue 4), MEDLINE, EMBASE, and CINAHL to October 2006, references in relevant reviews and personal files. Selection criteria Randomized controlled trials (RCTs) involving traction to treat acute (less than four weeks duration), sub-acute (four to 12 weeks) or chronic (more than 12 weeks) non-specific LBP with or without sciatica. Data collection and analysis Study selection, methodological quality assessment and data extraction were done independently by two authors. As there were insufficient data for statistical pooling, we performed a qualitative analysis. Main results We included 25 RCTs (2206 patients; 1045 receiving traction). Five trials were considered high quality.