Modelling age and secular differences in fitness between basketball players

Concerns about the value of physical testing and apparently declining test performance in junior basketball players prompted this retrospective study of trends in anthropometric and fitness test scores related to recruitment age and recruitment year. The participants were 1011 females and 1087 males entering Basketball Australia's State and National programmes (1862 and 236 players, respectively). Players were tested on 2.6 +/- 2.0 (mean +/- s) occasions over 0.8 +/- 1.0 year. Test scores were adjusted to recruitment age (14-19 years) and recruitment year (1996-2003) using mixed modelling. Effects were estimated by log transformation and expressed as standardized (Cohen) differences in means. National players scored more favourably than State players on all tests, with the differences being generally small (standardized differences, 0.2-0.6) or moderate (0.6-1.2). On all tests, males scored more favourably than females, with large standardized differences (>1.2). Athletes entering at age 16 performed at least moderately better than athletes entering at age 14 on most tests (standardized differences, 0.7-2.1), but test scores often plateaued or began to deteriorate at around 17 years. Some fitness scores deteriorated over the 8-year period, most notably a moderate increase in sprint time and moderate (National male) to large (National female) declines in shuttle run performance. Variation in test scores between National players was generally less than that between State players (ratio of standard deviations, 0.83-1.18). More favourable means and lower variability in athletes of a higher standard highlight the potential utility of these tests in junior basketball programmes, although secular declines should be a major concern of Australian basketball coaches.     

The reliability of the WISC-R performance scale with deaf children

Though the Wechsler tests are widely used to assess the intellectual ability of hearing impaired children, data on the reliability of the WISC-R with this population have been lacking. The Performance Scale of the WISC-R was administered to 59 prelingually deaf children attending a state-supported day school program. The reliability coefficients and standard errors of measurement were computed for each subtest and for the Performance Scale IQ. The results compare favorably with those found by Wechsler with the standardization sample.     

Generating Multivariate Normal Data in Excel

This article gives further information about generating multivariate Normal data, including a single‐cell Microsoft Excel formula to undertake a Choleski decomposition. References are also made to the bivariate case and the ‘common elements’ approach.     

‘In our case,it seems obvious the British Organising Committee piped the tune’: the campaign for recognition of ‘Ireland’ in the Olympic Movement, 1935–1956

In the 22 years between 1935 and 1956, the Irish Olympic Council and its later variant the Olympic Council of Ireland engaged in a struggle with the International Olympic Committee (IOC) for the right to be recognized as Ireland in Olympic competition and to include Irish nationals regardless of their place of residence on the island on the team. After competing as Ireland in 1924, 1928 and 1932, the landscape changed significantly in 1935 when Ireland was rebranded as the Irish Free State and its selection was limited to the state's boundaries by the IOC. As a result, Ireland failed to compete in the 1936 Berlin Games and over the next two decades Irish Olympic officials engaged in a campaign for the right to select Irish nationals, regardless of where they resided in the island and to be recognized as Ireland for Olympic purposes. This had serious implications for Irish sport and had the potential to split the national federations on political boundary lines.