OBJECTIVE To evaluate if chronic low back pain patients perform manual material handling tasks differently from control subjects. DESIGN Comparative study using a repeated measures design. BACKGROUND No study evaluated the lifting technique of back pain patients relative to control subjects during free style lifting and lowering tasks. Previous findings suggest that lowering would be more h...

Back injury in general, and spondylolysis in particular, represents a serious threat to the fast bowler. Hereditary factors, poor technique, overuse, and poor preparation for fast bowling may combine to produce the 'at risk' bowler. Three first-class county coaches were interviewed to establish a level of awareness of the lesion, with an emphasis on preparation of fast bowlers and the roles of ...

Objectives: The author demonstrates a variation of the transforaminal injection technique. The radiographic spread of contrast is described using a more oblique and ventral caudad approach in the epidural space “retrodiscal.” It is suggested that the radiographic findings of this technique for discogenic causes of induced radiculitis and/or back pain may yield more precise targeting of putative...

Nowadays, the doubly-fed induction generators (DFIGs) based wind turbines (WTs) are the dominant type of WTs connected to grid. Traditionally the back-to-back converters are used to control the DFIGs. In this paper, an Indirect Matrix Converter (IMC) is proposed to control the generator. Compared with back-to-back converters, IMCs have numerous advantages such as: higher level of robustness, re...