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Relative age effect (RAE) refers to the immediate and long-term consequences of age difference within an age grouping. In sporting contexts, it has been widely shown that those born in the first quarter gain an advantage over those born in the last quarter of the year. Rugby Union has received scant attention in relation to RAE. The primary purpose of the present study was to examine the presence and prevalence of RAE in Welsh age grade Rugby Union. A further purpose was to consider how coaches' selection processes have the potential to contribute to the manifestation of RAE. A sequential multi-method research typology was adopted to gain a richer, more contextualized understanding of RAE. Results revealed that RAE was evident in all age groups of Welsh junior club rugby from 'Under 7-19 yrs'. Odds ratios showed that the magnitude of the RAE increases with the three levels of performance (district, regional and national) above the club game. Further, the process of selection had characteristics that increased the risk of RAE occurring, especially a propensity to use physical characteristics as the primary selection criteria when selecting for representative teams. Also, coaches' overemphasis on game performance and winning appeared to determine that the older, potentially bigger, faster, stronger players are preferred over the younger less physically mature players. [ABSTRACT FROM AUTHOR]

This study examined the dietary habits of Welsh 12-13 year olds. A cohort of 84 boys and 81 girls, age 12.9 SD 0.3 years; body mass 51.3 SD 12.6 kg; and stature 1.54 SD 0.08 m, completed a food frequency questionnaire and seven-day food diary. Mean daily kilocalories (kcal/d), and percentages of total fat, saturated fat, carbohydrate, and protein, as well as fibre intake were calculated. The mean daily intake of total fat for this cohort was 34.7 percent, for saturated fat the value was 13.8 percent. The mean daily intake of carbohydrate and protein were 50.5 and 14.9 percent, respectively. The schoolchildren in this study reported a mean daily fibre intake of 12.3 g. The absolute intake of kilocalories was significantly greater (p ≤ 0.05) among boys than girls, but no other significant differences were reported. This study revealed that the diets of Welsh 12-13 year olds exceeded recommendations for fat, while at the same time did not meet the recommendations for fibre, and particularly fruit and vegetable intake. Our data indicated that, despite schools offering a range of healthy lunchtime foods, young people continue to consume an energy-dense and nutrient-poor diet, both at school and at home. [ABSTRACT FROM AUTHOR]

Objective This study considers the physical activity (PA) and dietary habits of British young people according to socio-economic status (SES).Methods The PA and dietary habits of 98 boys and 101 girls (12.9 0.3 years) from two Welsh secondary schools (school 1 and school 2) were examined. Free school meal eligibility and Census 2001 data were used as indicators of SES. School 1 was designated high SES, while school 2 represented low SES. Participants were classified according to SES. Physical activity was estimated by seven-day recall and questionaire; dietary patterns were assessed using a seven-day food diary and questionnaire.Results Two-thirds of all participants had not taken part in vigorous activity over the last week. Furthermore, 83.8 per cent of participants did not meet the Health Education Authority's5 recommendation of one hour per day moderate activity. Boys were more active than girls, (P ≤ 0.05), but SES did not influence time spent in activity. Ninety-four percent of participants were taken to school via motorized transport. There were no significant differences in fat intake between the sexes or across SES. In addition, 93 per cent of the participants, irrespective of SES, exceeded the 10 per cent saturated fat cut off point recommended by the World Health Organization12Conclusion Physical activity and dietary patterns are modifiable through suitable lifestyle changes. The present data support the notion that preventative strategies for combating chronic diseases should begin early in life and across socio-economic statuses. [ABSTRACT FROM PUBLISHER]

This study determined the prevalence of coronary heart disease (CHD) risk factors in young people of differing socio-economic status (SES). A cohort of 100 boys and 108 girls, aged 12.9, SD 0.3 years drawn of differing SES were assessed for CHD risk factors. Measurements included indices of obesity, blood pressure, aerobic fitness, diet, blood lipids and lipoproteins. Significant differences (P ≤ 0.05) were detected with respect to SES, for systolic blood pressure, total cholesterol and low density lipoprotein cholesterol, but in boys only Significant sex differences (P ≤ 0.05) were identified for systolic blood pressure, diastolic blood pressure, aerobic fitness, waist to hip ratio, summation of four skinfold thicknesses, average daily kilocalorie intake, total cholesterol and low density lipoprotein cholesterol. Moreover, increased body fatness, low aerobic fitness, a high fat diet and elevated lipoprotein (a), were the most frequently identified CHD risk factors in this cohort. This study reveals a high incidence of CHD risk factors in young people irrespective of SES and sex, and highlights the need for vigilance in identifying such risk factors from a young age. [ABSTRACT FROM AUTHOR]

Purpose. This study investigates cardiovascular disease risk factor response in adolescents following introduction of brisk walking into curriculum lessons. Design. Quasi-experimental. Setting. School-based. Subjects. An intervention group consisted of 115 (aged 12.4 ± 0.5 y) year eight participants, and 77 (aged 12.1 ± 1.1 y) year seven and year nine participants formed a control. Intervention. An 18-week cross-curricular physical activity intervention was implemented in one secondary school. Measures. Adiposity variables, blood pressure, lipids, lipoproteins, glucose, insulin, high- sensitivity C-reactive protein, high-molecular-weight adiponectin, aerobic fitness, physical activity behavior, and diet were assessed preintervention and postintervention. Analysis. Dependent and independent t-tests. Results. Prevalence of elevated waist circumference (9.8% vs. 6.9%), systolic blood pressure (3.3% vs. 0%), triglycerides (2.5% vs. 1.2%), and reduced high density lipoprotein cholesterol (3.7% vs. 2.7%) decreased in the intervention group. Significant improvements in high density lipoprotein cholesterol to total cholesterol ratio (mean ± SD: 2% ± 4% [confidence interval (Cl)0.05 = 1% to 2%], t80 = -3.5, p = .001) and glucose (-.1 ± .4 mmol/L [Cl0.05 = -.2% to 0%], t79 3.2, p = .002) were evident for the intervention group. Conclusion. The Activity Knowledge Circuit may prove to be a sustainable, effective, and cost-effective strategy to engage schoolchildren in physical activity on a daily basis. A longer- duration intervention is required to fully understand risk factor response in adolescents. [ABSTRACT FROM AUTHOR]