Predicción del tiempo en la prueba de 300 metros en patinadores juveniles de rendimiento / Time prediction in the 300 meter test of young performance skaters

El patinaje de velocidad es una disciplina competitiva de popularidad creciente; sin embargo, la evidencia científica disponible sobre regímenes de entrenamiento, de evaluación y de control es aún limitada. Por la naturaleza de la disciplina es frecuente el uso de pruebas de fuerza explosiva, para la valoración de los deportistas. El objetivo del presente estudio es predecir el rendimiento en la prueba de 300m, en patinadores de velocidad de categoría juvenil pista, de Bogotá, Colombia. Se evaluaron 50 patinadores (37 mujeres y 13 hombres), de la categoría juvenil. Se realizaron carreras de 300m, en la pista de un patinódromo y el tiempo fue cronometrado mediante un sistema de fotoceldas (Microgate Polifemo). Se determinó la altura de los saltos squat (SJ) y contra-movimiento (CMJ), con un sistema óptico de medición (OptoGait, Microgate). Se realizó una prueba de Wingate de 30s, utilizando un ciclo-ergómetro (Cyclus 2, RBM Elektronik-Automation). Se hicieron análisis bivariados y multivariados, utilizando el tiempo de la prueba de 300m, como variable dependiente. El análisis multivariado arrojó que la potencia media relativa (b = -1,163; se b = 0,326) y el salto desde sentadilla (b = -1,137; se b = 0,053) fueron las variables significativas (p<0,01), para predecir el tiempo en la prueba de 300 m (r² = 0,7). El salto squat y la potencia media relativa han mostrado ser pruebas predictoras del rendimiento en el tiempo de la prueba de 300m, en patinadores juveniles de Bogotá, Colombia.

Skating race is a competitive discipline of growing popularity, however, the available scientific evidence on training, evaluation and control systems is still limited. By the nature of the discipline, using explosive force tests for the evaluation of athletes is frequent. The objective of the present study is to predict performance in the 300m test of junior category speed skaters. 50 skaters (37 women and 13 men) from junior category were evaluated. 300m races were held on the track of a skating rink, and time was measured by a photocells system (Microgate Polyphemus). Height in squat and countermovement jumps were determined using an optical system (OptoGait, Microgate). 30 s Wingate test was performed in a cycle-ergometer (Cyclus 2-RBM Elektronik Automation). Bivariate and multivariate analyzes were performed setting 300m race time as a dependent variable. Multivariate analysis showed that average relative power (b=-1.163; se b= 0.326) and squat jump height (b= -1.137; se b= 0.053) were the significant variables (p<0.01) to predict the 300m test (r²= 0.7). The squat jump height and average relative power tests have shown to be predictive of performance in 300m test in junior skaters.

Students Perceptions and Feedback on Ragging in a South Indian Medical College.

Introduction: Ragging is associated with physical, behavioural, emotional and social problems among victims. Some reasons given by students for ragging are: being ragged by their seniors; sense of superiority; a form of introduction. Methodology: Emerging themes and insights from in-depth interviews and group discussions with senior students helped in preparing a Likert type questionnaire on certain important aspects of ragging and the precautions being taken by the management. This was administered to 240 medical students from the 5th and 7th semesters (batches of 2008 & 2009) of the NRI Medical College at Chinakakani in Guntur District of Andhra Pradesh. Group discussions also were conducted with students to identify issues on ragging. Results & Discussion: Forty-five percent of the students felt that some amount of ragging does occur. Almost all (99%) felt that ragging is necessary to build a relationship between seniors and juniors. Eighty-seven percent of seniors expected the juniors to address them as “Sir” or “Madam”. Discussions revealed that economic background was not an indicator for those indulging in ragging. Many felt that some interaction is needed between new students and seniors, but that any form of interaction may be misconstrued as ragging. Conclusion: Students have to be made aware of the ills of ragging and its consequences. The management also has the responsibility to create safe avenues for healthy interaction of new students with seniors. Some methods include organizing activities under supervision of teachers, individual counselling of students, seminars and workshops on self- esteem.