Boys demonstrate greater knee frontal moments than girls during the impact phase of cutting maneuvers, despite age-related increases in girls.

Purpose: Anterior cruciate ligament (ACL) injury rate is low among children, but increases during adolescence, especially in girls. Increases in the knee valgus moment within 70 ms of contact with the ground (KFM) may explain the sex-specific increase in the risk of ACL injury. The purpose of the study was to investigate sex-dependent changes in the KFM from pre-adolescence to adolescence during a cutting maneuver (CM).

Validity and reliability of an iPad with a three-dimensional camera for posture imaging.

Background: It is important to quantify a static posture to evaluate the need for and effectiveness of interventions such as physical management, physiotherapy, spinal orthosis or surgical treatment on the alignment of body segments. Motion analysis systems can be used for this purpose, but they are expensive, require a high degree of technical experience and are not easily accessible. A simpler method is needed to quantify static posture.

Timing, not magnitude, of force may explain sex-dependent risk of ACL injury.

Purpose: The anterior cruciate ligament is loaded through valgus moment, vertical ground reaction force, and internal rotation moment. The aim of this study was to compare the timing of force peaks during early stance between youth girls and boys.

Methods: One-hundred and twenty-nine team sport athletes aged 9-12 completed a total of 2540 cutting maneuvers captured with an 8-camera motion capture system.

The effect of asymmetrical limited hip flexion on seating posture, scoliosis and windswept hip distortion.

Background: Postural asymmetries with seating problems are common in adults with cerebral palsy.

Aims: To analyse the prevalence of asymmetrical limited hip flexion (<90°) in adults with CP, and to evaluate the association between asymmetrical limited hip flexion and postural asymmetries in the sitting position.

Methods And Procedures: Cross-sectional data of 714 adults with CP, 16-73 years, GMFCS level I-V, reported to CPUP, the Swedish cerebral palsy national surveillance program and quality registry, from 2013 to 2015.

Effects of Sex and Fatigue on Biomechanical Measures During the Drop-Jump Task in Children.

Background: Female athletes have a higher rate of anterior cruciate ligament (ACL) injury than males from adolescence and into maturity, which is suggested to result from sex-specific changes in dynamic movement patterns with maturation. Few studies have studied movement strategies and response to fatigue in children.

Purpose: To evaluate the effect of fatigue on biomechanical variables associated with increased risk for ACL injury during a drop-jump (DJ) performance in children.

[Prevalence of sport injuries, sport participation and drop out due to injury in young adults].

Introduction: Sport participation has increased during the past few decades, with accompanying rise in sport injuries. The purpose of this study was to assess the prevalence of sport injuries, and drop-out due to them along with possible risk factors (hours of sports participation, sex, age, aerobic fitness and body composition).

Material And Methods: A retrospective, cross-sectional design was used and the 457 participants were 17 and 23 years old.