THE SOUTH AFRICAN JOURNAL OF SPORTS MEDICINE The Editor The South African Journal of Sports Medicine PO Box 115, Newlands, 7725 Tel: (021) 650-4558 Fax: (021) 686-7530 E-mail: Mike.Lambert@uct.ac.za Article submissions: www.sajsm.org.za Plagiarism policy: www.sajsm.org.za/index.php/sajsm/about/editorialPolicies The views expressed in individual articles and advertising material are the personal views of the authors and are not necessarily shared by the editors, the advertisers or the publishers. No articles may be reproduced without the written consent of the publishers. Editor Prof. Mike Lambert University of Cape Town Editorial board Dr Kerith Aginsky University of the Witwatersrand Dr Theresa Burgess University of Cape Town Dr Richard de Villiers Drs Van Wageningen and Partners, Somerset West Dr Lize Havemann-Nel North West University Dr Christa Janse van Rensburg University of Pretoria Dr Louis Holtzhausen University of the Free State Prof. Frank Marino Charles Sturt University, Australia Dr Babette Pluim Royal Netherlands Lawn Tennis Association, The Netherlands Publisher Health and Medical Publishing Group 28 Main Road, Rondebosch, 7700 Private Bag X1, Pinelands, 7430 Tel: (021) 681-7200 HMPG Editor-in-Chief Janet Seggie Deputy Editor Bridget Farham Editorial Systems Manager Melissa Raemaekers Scientific Editor Kerry Gordon Technical Editors Emma Buchanan, Paula van der Bijl Art Director Brent Meder DTP/Layout Anelia du Plessis, Carl Sampson Production assistant Neesha Hassan Head of publishing Robert Arendse Head of sales and marketing Diane Smith | Tel: (012) 481-2069 CONTENTS EDITORIAL 3 A phase of consolidation before moving forward again M Lambert ORIGINAL RESEARCH 4 Common acute and chronic musculoskeletal injuries among female adolescent field hockey players in KwaZulu-Natal, South Africa T J Ellapen, K Bowyer, H J van Heerden 9 Collagen gene interactions and endurance running performance K O’Connell, M Posthumus, M Collins 15 Steps that count! A feasibility study of a pedometer-based, health- promotion intervention in an employed, South African population J D Pillay, T L Kolbe-Alexander, K I Proper, W van Mechelen, E V Lambert 20 Micro-oscillations in positive and negative affect during competitive laboratory cycle time trials – a preliminary study C Rhoden, J West, A Renfree, M Corbett, A St Clair Gibson 26 The prevalence of self-reported neck pain in rugby union players in Gauteng Province E D Watson, R-L Hodge, M Gekis 32 CPD QUESTIONNAIRE VOLUME 26 | NUMBER 1 | APRIL 2014 mailto:Mike.Lambert@uct.ac.za http://www.sajsm.org.za http://www.sajsm.org.za/index.php/sajsm/about/editorialPolicies