SPECIFIC STRATEGY FOR THE MEDALLISTS VERSUS FINALISTS AND SEM-FINALISTS IN THE WOMEN'S 200 M FREESTYLE AT THE SYDNEY OLYMPIC GAMES

The performances of the women's 200 m freestyle at the Sydney Olympic games (final and semi-final) were studied using 12 video cameras. The four 50 m velocities, stroke frequency, stroke length, and turn velocities were calculated using a specific competition analysis computer program. The medallists swam faster than the non-medallist finalists only in the first 50 m. There was no other statistical difference for the start or turns velocities. For the 16 swimmers, the 200 m freestyle velocity was mainly related to the velocity of the third 50 m lap (r = 0.83;

SPECIFIC STRATEGY FOR THE MEDALISTS VERSUS FINALISTS AND SEMI-FINALISTS IN THE MEN'S 200 M BACKSTROKE AT THE SYDNEY OLYMPIC GAMES

The performances of the men's 200 m backstroke at the Sydney Olympic games (final and semi-final) were studied using 12 video cameras. The four 50 m velocities, stroke frequency, stroke length, and turn velocities were calculated using a specific competition analysis computer program. The medallists swam faster than the non-medallists finalist in the three first 50 m laps of the race. However, these differences were not statistically significant. For the whole group (n = 16), the 200 backstroke velocity was mainly related to the second 50 m (r = 0.93,

SPECIFIC STRATEGY FOR THE MEDALISTS VERSUS FINALISTS AND SEMI FINALISTS IN THE WOMEN'S 200 M BACKSTROKE AT THE SYDNEY OLYMPIC GAMES

The performances of the women's 200 m backstroke at the Sydney Olympic games (final and semi-final) were studied using 12 video cameras. For each 50 m lap, the velocities, stroke frequency, strokc length, and turn velocities were calculated using a specific competition analysis computer program. The medallists swam faster than the non-medallists finalist in all four laps. They had a higher stroke frequency and longer stroke length throughout the race. For the whole group (n = 16), the 200 m backstroke velocity was mainly related to the third lap (r = 0.95,

SPECIFIC STRATEGY FOR THE MEDALLISTS VERSUS FINALISTS AND SEMI FINALISTS IN THE MEN'S 200 M FREESTYLE AT THE SYDNEY OLYMPIC GAMES

The performances of the men's 200 m freestyle at the Sydney Olympic games (final and semi-final) were studied using 12 video cameras. The four 50 m velocities, stroke frequency, stroke length, and turn velocities were calculated using a competition analysis computer program. The medallists swam faster than the non-medallist finalists in the Znd, 3rd and 4th 50 m. They also swam faster in the 2nd and 3rd turns. For the 16 swimmers. the 200 m freestyle velocity was mainly related to the velocity of the 2nd 50 m (r = 0.95;

French Innovative Processes in the Field of Thermal TreatmentFor Decommissioning and Legacy Waste

International audienceIn order to optimize decommissioning waste management and better anticipate related issues, French nuclear waste producers CEA and AREVA, and the French Agency in charge of radioactive waste disposal (ANDRA) have decided to collectively develop technologies mastering costs, schedules and dose uptake as well as optimizing waste volumes and repository safety. In this context, several innovative projects have emerged over the past few years to develop specific thermal treatment processes. This paper focus on four new processes, presenting their goals, technical descriptions and first experimental results

Isolated core training improves sprint performance in national-level junior swimmers

Purpose: The aim of our study was to quantify the effects of a 12-week isolated core training programme on 50-m front crawl swim time and measures of core musculature functionally relevant to swimming. Methods: Twenty national-level junior swimmers (ten male and ten female, 16 ± 1 y, 171 ± 5 cm, 63 ± 4 kg) participated in the study. Group allocation (intervention [n=10], control [n=10]) was based on two pre-existing swim training groups who were part of the same swimming club but trained in different groups. The intervention group completed the core training, incorporating exercises targeting the lumbo-pelvic complex and upper region extending to the scapula, three times per week for 12 weeks. While the training was performed in addition to the normal pool-based swimming programme, the control group maintained their usual pool-based swimming programme. We made probabilistic magnitude-based inferences about the effect of the core training on 50-m swim time and functionally relevant measures of core function. Results: Compared to the control group, the core training intervention group had a possibly large beneficial effect on 50-m swim time (-2.0%; 90% confidence interval -3.8 to -0.2%). Moreover it showed smallmoderate improvements on a timed prone-bridge test (9.8%; 3.9 to 16.0%) and asymmetric straight-arm pull-down test (21.9%; 12.5 to 32.1%), there were moderate-large increases in peak EMG activity of core musculature during isolated tests of maximal voluntary contraction. Conclusion: This is the first study to demonstrate a clear beneficial effect of isolated core training on 50-m front crawl swim performance

Speed during training and anthropometric measures in relation to race performance by male and female open-water ultra-endurance swimmers

The relationship of anthropometric and training characteristics with race time were investigated in 39 male and 24 female open-water ultra-endurance swimmers in a 26.4 km open-water ultra-swim, using bi- and multivariate analyses. For the men, body height, Body Mass Index, length of arm, and swimming speed during training were related to race time in the bivariate analysis. For the women, swimming speed during training was associated with performance in the bivariate analysis. In the multivariate analysis for the men, Body Mass Index and swimming speed during training were related to race time

Mixed Metallic and Organic Transuranic Waste Incineration / Vitrification - 17539

International audienceTransuranic wastes are produced by the nuclear fuel cycle management, essentially from MOX fuel production units. These waste, contaminated with Uranium and Plutonium, have large composition variability and enclose, in current temporary conditioning, mixed metals and organics. Metals are mainly stainless steel, aluminum or copper and organics are composed of different kind of plastics, highly chlorinated for some.On purpose, a new treatment process is being studied to incinerate the organics, melt the metallic fraction and incorporate the mineral residue fraction in a glass matrix. This paper presents the outlines of the process feasibility studies waste main characteristics, process specifications and main technical options, RetD strategy, mixed glass / metal package description, basic studies needed to develop the process and the matrix (glass/metal redox reactions, actinides partitioning