New insights in professional horse racing; “in-race” heart rate data,elevated fracture risk,hydration, nutritional and lifestyle analysis of elite professional jockeys     

John O’Reilly  Hoi Lun Cheng  Eric Tsz-Chun Poon 《Journal of sports sciences》2017,35(5):441-448

Weight-making practices have been shown to impair musculoskeletal and physiological function of jockeys. This study investigated the “in-race” heart rate (HR) responses and hydration status during competitive racing, as well as selected physiological and lifestyle parameters of professional jockeys based in Hong Kong. “In-race” HR responses and early morning hydration status of 20 male jockeys were examined in hot and moderate climactic occasions. Additionally, bone mineral density (BMD), dietary intake and lifestyle choices were assessed. Osteopenia was observed in the calcanei of jockeys (left: 0.51 ± 0.06; right: 0.46 ± 0.12 g · cm^?2). Energy and protein intake were significantly lower on a race day compared to a non-race day (P < 0.05). “In-race” HR_max values were similar to those from VO_2max laboratory tests (186 ± 14 vs. 185 ± 8 bpm). Hypohydration was observed on both racing days. (USG: 1.0247 ± 0.006 and 1.0256 ± 0.0258 mg · L^?1 for hot and moderate conditions, respectively). Sauna usage (25.5%) and food restriction (20.4%) were the most common weight-making practices. Current lifestyle choices of jockeys result in suboptimal bone health, hydration status and nutritional intake, which can significantly enhance the fracture risk. Further research should develop exercise and nutrition guidelines for optimising their skeletal health.  相似文献   

A Panorama of Statistics: Perspectives,Puzzles and Paradoxes in Statistics Eric Sowey & Peter Petocz,Wiley, 2017, 328 pages, £29.99, paperback ISBN 9781119075820     

Neil Sheldon 《Teaching Statistics》2017,39(2):64-65

  相似文献   

A study of in-service teacher educator roles,with implications for a curriculum for their professional development     

John B. O’Dwyer  Hilal Handan Atlı 《欧洲师范教育杂志》2015,38(1):4-20

In-service educators have a crucial role to play in meeting the professional learning needs of teachers of the future, according to the Council of Europe’s ‘ET 2020’, although it is less clear what that role entails. This empirical study, undertaken in a university school of English language in Turkey, explores the everyday experience of a team of wholly school-based in-service educators and develops a model of their role based on an analysis of questionnaire, interview and focus group data. The results attest to the complexities of the in-service educator’s role, revealing them to be more than simply effective teachers. Catering for affective needs, coaching a broad range of clients, interpreting contextual variables and providing appropriate feedback represent some of the challenges in-service educators are facing in the research context, which set them apart and suggest important lessons for the development of an in-service educator training curriculum.  相似文献   

Enhancing Collaboration Between Occupational Therapists and Early Childhood Educators Working with Children on the Autism Spectrum     

Juliet E. Hart Barnett  Kaitlin O’shaughnessy 《Early Childhood Education Journal》2015,43(6):467-472

  相似文献   

Designing Clothes and Cars: Second Grade Students Using Multiple Forms of Literacy to Try on and Perform Identity     

Kathleen Ellen O’Neil 《Early Childhood Education Journal》2015,43(6):505-514

  相似文献   

Deaf Culture and Competing Discourses in a Residential School for the Deaf: “Can Do” Versus “Can't Do”     

Catherine A. O’Brien  Peggy Placier 《Equity & Excellence in Education》2015,48(2):320-338

From an ethnographic case study of a state-funded residential school for the Deaf, the authors employed Critical Discourse Analysis to identify competing discourses in the talk of educators. These discourses are embedded in the historical oppression and labeling of deaf people as disabled and the development of Deaf culture as a counter-discourse. Implications include changing teacher/administrator hiring practices, improving professional development options, and distributing power between Deaf and hearing educators.  相似文献   

Understanding residents’ environmental knowledge in a metropolitan city of Hong Kong,China     

Lewis T.O. Cheung  Lincoln Fok  Eric P.K. Tsang  Wei Fang  H.Y. Tsang 《Environmental Education Research》2015,21(4):507-524

This study aimed to understand the environmental knowledge (EK) of the residents of Hong Kong. A territory-wide survey was administered to investigate the subjective and objective EK of the respondents as well as their means of receiving information about the environment. The results indicated that Hong Kong’s residents have a comparatively low level of EK, with a mean environmental knowledge score of 3.35 out of 8. The youngster (15–24?years old), students, and employed individuals reported more extensive EK than the older and unemployed respondents, thus suggesting that the younger generation and employed individuals have increased opportunities to receive EK through various channels. A weak positive correlation was identified between subjective and objective EK, thus implying that the residents of Hong Kong could not accurately evaluate their own level of EK. The results indicate that traditional media plays a significant role in disseminating EK. Digital media, such as websites and digital social networks, were also determined to be influencing factors in disseminating environmental messages to the younger generation.  相似文献   

Social coping and self-concept among young gifted students in Ireland and the United States: a cross-cultural study     

Jennifer Riedl Cross  Colm O’Reilly  Mihyeon Kim  Sakhavat Mammadov  Tracy L. Cross 《High Ability Studies》2015,26(1):39-61

Social coping and self-concept were explored among Irish (n = 115) and American (n = 134) grades 3–8 students. Denying one’s giftedness or the impact it has on peer relationships were associated with poor self-concept in both samples. Among Irish students, denying giftedness was associated with more positive self-concept when paired with a high activity level. Engaging in many activities in the US sample and helping one’s peers in the Irish sample were positive predictors of academic self-concept. Findings suggest young gifted students may benefit from learning more about their exceptional abilities and their impact on peers. They should also be encouraged to engage in extracurricular activities and find ways to use their exceptional abilities to support their peers.  相似文献   

Simulation and experimental determination of the online separation of blood components with the help of microfluidic cascading spirals     

Lisa Sprenger  Silvio Dutz  Thomas Schneider  Stefan Odenbach  Urs O. H?feli 《Biomicrofluidics》2015,9(4)

Microfluidic spirals were used to successfully separate rare solid components from unpretreated human whole blood samples. The measured separation ratio of the spirals is the factor by which the concentration of the rare component is increased due to the Dean effect present in a flow profile in a curved duct. Different rates of dilution of the blood samples with a phosphate-buffered solution were investigated. The diameters of the spherical particles to separate ranged from 2 μm to 18 μm. It was found that diluting the blood to 20% is optimal leading to a separation ratio up to 1.97. Using two spirals continuously placed in a row led to an increase in separation efficacy in samples consisting of phosphate-buffered solution only from 1.86 to 3.79. Numerical investigations were carried out to display the flow profiles of Newtonian water samples and the shear-thinning blood samples in the cross-section of the experimentally handled channels. A macroscopic difference in velocity between the two rheologically different fluids could not be found. The macroscopic Dean flow is equally present and useful to help particles migrate to certain equilibrium positions in blood as well as lower viscous Newtonian fluids. The investigations highlight the potential for using highly concentrated, very heterogeneous, and non-Newtonian fluidic systems in known microsystems for screening applications.  相似文献   

A variant within the AQP1 3ʹ-untranslated region is associated with running performance,but not weight changes,during an Ironman Triathlon     

Colleen J. Saunders  Michael Posthumus  Kevin O’Connell  Alison V. September 《Journal of sports sciences》2015,33(13):1342-1348

The objective of this study was to test the association of the rs1049305 (G > C) variant within the 3?-untranslated region of the aquaporin 1 gene, AQP1, with changes in body weight, post-race serum sodium concentration and performance in Ironman triathletes. Five hundred and four male Ironman triathletes were genotyped for the rs1049305 variant within the AQP1 gene. Change in pre- and post-race body weight was calculated for 470 triathletes and used as a proxy for changes in body fluid during the race, as well as to divide triathletes into biologically relevant weight-loss groups (0–3%, 3–5% and >5%). There were no rs1049305 genotype effects on post-race serum sodium concentrations (P = 0.647), pre-race weight (P = 0.610) nor relative weight change during the Ironman Triathlons (P = 0.705). In addition, there were no significant differences in genotype (P = 0.640) nor allele (P = 0.643) distributions between the weight loss groups. However, triathletes who carry a C-allele were found to complete the 42.2-km run stage faster (mean 286, s = 49 min) than triathletes with a GG genotype (mean 296, s = 47 min; P = 0.032). The AQP1 rs1049305 variant is associated with running performance, but not relative body weight change, during the 2000, 2001 and 2006 South African Ironman Triathlons.  相似文献