Assessment of total body water and its compartments in elite judo athletes: comparison of bioelectrical impedance spectroscopy with dilution techniques

Bioelectrical impedance spectroscopy (BIS) is an inexpensive and non-invasive technique to measure total body water (TBW), extracellular water (ECW), and intracellular water (ICW). The purpose of this study was to validate TBW, ECW and ICW assessed by BIS, using dilution techniques as the reference method (REF) in elite judo athletes. Thirty-two Portuguese elite male judo athletes were evaluated during a period of weight stability. TBW, ECW and ICW were assessed by BIS (Xitron 4000). Deuterium and bromide dilution techniques were used as the criterion method for measuring TBW and ECW, while ICW was calculated as the difference between the two. BIS explained 96%, 77% and 94% of the total variability from REFs for TBW, ECW and ICW, respectively. BIS also demonstrated high precision (ρ ≥ 0.88) and accuracy (C_b = 0.98), with a minimum concordance coefficient correlation of 0.87 for ECW. The mean bias demonstrated that BIS slightly overestimated the REF in 1.1 kg (2.3%), 0.3 kg (1.6%) and 0.8 kg (2.7%) for TBW, ECW and ICW, respectively. The 95% limits of agreement ranged from ?1.2 to 3.3 kg in TBW, from ?1.8 to 2.4 kg in ECW and from ?1.0 to 2.6 kg in ICW. A non-significant trend was found between the difference and the mean of reference and alternative methods. These findings highlight the efficacy of BIS as a valid non-biased tool for the assessment of TBW and its compartments in elite male judo athletes, during a period of weight stability.     

The Snowbird Charrette: Integrative Interdisciplinary Collaboration in Environmental Research Design

The integration of ideas, methods, and data from diverse disciplines has been a transformative force in science and higher education, attracting policy interventions, program innovations, financial resources, and talented people. Much energy has been invested in producing a new generation of scientists trained to work fluidly across disciplines, sectors, and research problems, yet the success of such investments has been difficult to measure. Using the Integrative Graduate Education and Research Training (IGERT) program of the U.S. National Science Foundation as a strategic research site, we conducted an experiment to determine whether and how the process and products of research of IGERT-trained scientists differ from those of scientists trained in disciplinary graduate programs. Among scientists in the early years of graduate study we found substantial and consistent differences suggesting that interdisciplinary training improved the quality and process of research, but this pattern was equally strongly reversed among students in the latter years of graduate study. Using systematic observation and other data we suggest why this might be so, then discuss the implications of these results for the design and conduct of graduate education and research.     

Comment on Hanasaki Kohei: decolonalization and the assumption of war responsibility

Abstract

The first Asian Lesbian Film and Video Festival, held in Taipei in August 2005, brought forth media art, social activism and cultural exchange on one occasion. It provided a rare opportunity to showcase the experience of Asian lesbians, which is vastly different from the experience of those in Western countries. While there were great similarities in their love experiences among the 36 Asian lesbian shorts selected, they also reflected the differences among the Asian countries in terms of local development of tongzhi culture and community as well as the visibility of tongzhis. Among the Chinese communities, Taiwan was seen to be at the forefront of the development of tongzhi culture, Mainland China was new to the movement, and Hong Kong was somewhere in‐between. Japanese and Korean videos took a critical and reflective attitude towards social regulations and mainstream thoughts, although witty and farcical at times. While the Filipinos show a more tolerant attitude to the Lesbian Gay Bisexual Transgender (LGBT) community, the major oppressive forces on lesbians were poverty, gender inequality and sexual violence. Only one Israeli documentary was shown at the film festival, which focused on lesbians living in the Jewish Orthodox traditions. The film won international acclaim and attracted much public attention to the issue. Films and videos were found to be an effective means to transcend language barriers and cultural differences for a true cross‐cultural exchange among Asian lesbians. During the few days of festival, a ‘queer nation’, not defined by nationalities or languages, but by the pursuit of love expressions, was constructed around The Taipei House.