Editorial

1. Research in prevention and rehabilitation of hamstring muscle strain injury

Reviews

1. Time for a paradigm shift in the classi fication of muscle injuries
2. Rehabilitation and return to sport after hamstring strain injury

Original articles

1. Risk factors for hamstring injuries in Australian male professional cricket players
2. Relationships among hamstring muscle optimal length and hamstring flexibility and strength
3. The effect of hamstring flexibility on peak hamstring muscle strain in sprinting
4. Motivation dimensions for running a marathon:A new model emerging from the Motivation of Marathon Scale(MOMS)
5. Assessing acceptance in mindfulness with direct-worded items:The development and initial validation of the Athlete Mindfulness Questionnaire
6. Modelling home advantage for individual teams in UEFA Champions League football
7. Mental training can improve physical activity behavior in adolescent girls
8. Various performance-enhancing effects from the same intensity of whole-body vibration training
9. The effects of total ankle replacement on ankle joint mechanics during walking
10. Dual-frequency whole body vibration enhances vertical jumping and change-of-direction ability in rugby players
11. Using physical examinations to estimate age in elementary school children: A Chinese population-based study
12. Effects of total soy saponins on free radicals in the quadriceps femoris, serum testosterone,LDH,and BUN of exhausted rats
13. Con firmatory factor analysis of VISA-P scale and measurement invariance across sexes in athletes with patellar tendinopathy
14. Preparatory training attenuates drastic response of the insulin-like growth factor binding protein 1 at the point of maximal oxygen consumption in handball players
15. Author biographies

Regular papers Opinions

1. School-based physical activity interventions for children and youth: Keys for success
2. PM2.5:A barrier to fitness and health promotion in China
3. The ethics of exercise in eating disorders:Can an ethical principles approach guide the next generation of research and clinical practice?
4. Concussion in contact sport:A challenging area to tackle