Objectives We aimed to determine the prevalence of low back pain (LBP) in sport, and what risk factors were associated with LBP in athletes. Design Systematic review with meta-analysis. Data sources ...

Background The ‘jumper's knee paradox’, where symptomatic athletes appear to perform better in a counter movement jump (CMJ) compared to asymptomatic controls in previous case–control studies is not ...

Dr R Ogai, Laboratory for Exercise Physiology and Biomechanics, Chukyo University Graduate School of Health and Sport Sciences, 101 Tokodachi, Kaizu-cho, Toyota, 470-0393 Aichi, Japan; rogyai{at}yahoo ...

Correspondence to Professor Roald Bahr, Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo 0806, Norway; roald.bahr{at ...