The effects of an unanticipated side-cut on lower extremity kinematics and ground reaction forces during a drop landing

Unanticipated direction to cut after landing may alter the lower extremity landing biomechanics when performing landing motions. These alterations may potentially increase the risk of ACL injury. The purpose of this study was to determine if an unanticipated side-cut affects lower extremity landing biomechanics in females. Eighteen recreational female athletes participated in two blocks of testing: the first block of testing consisted of three acceptable trials of anticipated dominant limb and non-dominant limb 45-degree diagonal cutting after landing, which were performed in a counterbalanced order. The second block of testing consisted of three acceptable trials of unanticipated dominant limb and non-dominant limb diagonal cutting after landing. Data analysis mainly focused on the dominant limb landing biomechanics. Unanticipated side-cut landing, compared (paired t-test, p < 0.05) to the anticipated landings, resulted in less hip abduction and tibial internal rotation angle at initial contact (IC) and a lower maximum ankle inversion angle and a greater maximum knee abduction angle, and knee and hip displacement. Also, greater posterior GRF and a longer time to peak medial GRF were exhibited. These outcomes indicate that athletes may adapt their landing mechanics to land unsafely when encountering an unanticipated event.     

Polluted lake restoration to promote sustainability in the Yangtze River Basin,China

China has sought to address water pol-lution in the last decade by introduc-ing a wide range of laws and regulations(Table S1),which led to nationwide water qua...     

To what extent does sexual dimorphism exist in competitive powerlifters?

We examined sexual dimorphism in the anthropometry of 68 Australasian and Pacific powerlifters (14 females, 54 males) who were competing in one of two national or international powerlifting competitions held in New Zealand. All powerlifters were assessed for 37 anthropometric dimensions by ISAK (International Society for the Advancement of Kinanthropometry) Level II and III accredited anthropometrists. While the powerlifters were highly mesomorphic and possessed large girths and bone breadths, both in absolute terms and when expressed as Z(p)-scores compared through the Phantom (Ross & Wilson, 1974), these characteristics were often more pronounced in male than female lifters. No significant inter-gender differences in any of the measures of adiposity were observed. When normalized through the Phantom, the female and male powerlifters had relatively similar segment lengths and bone breadths, indicating that regardless of gender, competitive powerlifters possess comparable skeletal proportions. These results indicate that although competitive powerlifters exhibit sexual dimorphism for many absolute anthropometric measures, little dimorphism is found for measures of adiposity and for proportional segment lengths and bone breadths. These results further support the importance of anthropometric profiling for powerlifting, and suggest that successful male and female powerlifters will possess similar proportional characteristics.     

Biochemical studies to confirm a missed case of multiple myeloma in a seventy year old male

Routine investigations of a 70 year old male led to provisional diagnosis of anemia. However further investigations suggested the possibilities of carcinoma of stomach associated with pernicious anemia, multiple myeloma and megaloblastic anemia. Finally serum protein electrophoresis supported by the clinical suspicion confirmed multiple myeloma.     

Explaining Individual Differences in Trajectories of Simultaneous Bilingual Development: Contributions of Child and Environmental Factors

Effects of child and environmental factors in moderating the course of bilingual development were investigated using longitudinal data, from age 2.5 to 5 years, on 126 U.S.-born children with early exposure to Spanish and English. Multilevel models of Spanish and English expressive vocabulary identified children’s phonological memory ability as a significant predictor of both outcomes, while also replicating the effect of the relative amount of language exposure. In addition, nonverbal IQ was a significant predictor of English vocabulary; birth order and maternal education in Spanish were significant predictors of Spanish vocabulary. These findings expand our understanding of the sources of the wide heterogeneity in bilingual development and of the requirements that language acquisition makes of learners and their environments.     

Building an Undergraduate STEM Team Using Team-Based Learning Leading to the Production of a Storyboard Appropriate for Elementary Students

A unique undergraduate team that spans five different engineering disciplines, chemistry, biology, and mathematics was formed. The team was formed to promote cross-disciplinary learning, to improve retention, and to prepare the students for the kind of problems they will face in their careers. This paper describes the variety of activities used over 2 years to tie the team together, as well as afford opportunities to develop team-building skills. The activities described highlight the critical elements of a faculty leader whose own work is interdisciplinary, correct balance of disciplines in the team, and sufficient time for team development. The use of external feedback was essential for all activities. Clearly defined goals and hard deadlines were critical for the completion of individual activities, as well as developing a healthy team environment. Although the student cohort has learned from the activities, more time is needed to assess whether the students have become a fully efficient team. Furthermore, an additional cohort would be needed to assess whether the approach was able to assist with student’s interest in STEM and their desire to help other people.