Long-axis rotation: the missing link in proximal-to-distal segmental sequencing

Most assessments of segmental sequencing in throwing, striking or kicking have indicated a proximal-to-distal sequencing of end-point linear speeds, joint angular velocities, segment angular velocities and resultant joint moments. However, the role of long-axis rotations has not been adequately quantified and located in the proximal-to-distal sequence. The timing and importance of upper arm internal-external rotation and pronation-supination in the development of racquet head speed have been examined in the tennis serve and squash forehand drive and considered in relation to conventional concepts of proximal-to-distal sequencing. Both long-axis rotations reached their peak angular speeds late in both strokes, typically after shoulder flexion-extension, shoulder abduction-adduction and elbow extension. These results clarify and confirm the importance of upper limb long-axis rotations in the production of racquet head speed. It appears that traditional proximal-to-distal sequencing concepts are inadequate to describe accurately the complexity of the tennis serve or squash forehand drive. It is essential to consider upper arm and forearm longitudinal axis rotations in explaining the mechanics of these movements and in developing coaching emphases, strength training schedules and injury prevention programmes.     

Crossing Ulster's Other Great Divide

Following the report of the Lock-wood Committee (196S), the Northern Ireland government greatly expanded its higher education provision by creating two new institutions, the New University of Ulster, modelled on the English 'whitebrick' foundations of the period, and a direct grant institution for advanced further education, Ulster College. The first part of the article describes the reaction of the century-old Queen's University, Belfast and the new creations to the challenges of the Seventies, including the Ulster 'troubles', and to changing student demands and community needs.
NUU soon began to experience difficulties in recruiting students, both in quality and quantity, whereas UC, which became a polytechnic in 1975, succeeded beyond expectations. In 1982, after a review by the Chilver Committee but against its recommendation, the Westminster government decided, as an alternative to closing NUU, to merge it with the polytechnic to form the University of Ulster. The article discusses the merger, and the alternatives to it, seeking to distinguish between that which was accidental to the Ulster situation and that which might have more general application. It considers the problems of co-ordination, before and after the merger, including that of 'complementarity' between QUB and the University of Ulster. Finally it outlines the objectives of UU and the considerable progress made towards achieving them but sounds a cautionary note with regard to the social context in which it operates.