RESUMO
Problema: en el mundial, los marchistas participan con el más alto nivel de ejecución técnica y con las mejores condiciones físicas, por lo que el análisis de los pasos de un marchista es clave para la obtención de un resultado óptimo. Objetivo: analizar la técnica del paso de un marchista de elite y el comportamiento de las variables de la marcha atlética, pre competencia al mundial de atletismo. Método: al deportista se le aplicó una prueba en una pista electrónica, evaluando las variables cinemáticas: longitud de paso, frecuencia de pasos, tiempo de vuelo y velocidad. Se utilizó ANOVA para determinar diferencias significativas (p ≤0.05). Resultados: en las tres pruebas realizadas, todas las variables incrementaron significativamente, aunque la diferencia más significativa se encontró entre tiempo de vuelo y frecuencia de pasos p=0.0000001, p<0.05. Conclusión: debido a que el tiempo de vuelo se incrementa rápidamente, se debe cuidar que no influya en la ejecución técnica del marchista para que sea más efectiva y así evitar una amonestación o descalificación.
Problem: In the World Athletics Championships, the racewalkers participate with the highest level of technical execution and with the best physical conditions, so the analysis of the steps of a racewalker is key to obtain an optimal result. Objective: To analyze the technique of an elite racewalker and the behavior of the variables of the athletic racewalking, pre-competition to the World Athletics Championships. Method: A test on an electronic track was given to one athlete, evaluating the kinematic variables: step length, step frequency, flight time, and speed. ANOVA was used to determine significant differences (p ≤0.05). Result: In the three tests carried out, all the variables increased significantly, although the most significant difference was found between flight time and step frequency p = 0.0000001, p <0.05. Conclusion: Since the flight time increases rapidly, it must be careful that this not influence the technical execution of the racewalkers, to be more effective, and thus avoid a warning or disqualification.
Problema: No mundial, os marchistas participam com o maior nível de execução técnica e com as melhores condições físicas, é por isso que a análise dos passos de um marchista é a chave para a obtenção de melhores resultados. Objetivo: analisar a técnica de passo de um marchista de elite e o comportamento das variáveis da marcha atlética, pré-competição rumo ao mundial de atletismo. Método: um teste foi aplicado em uma pista eletrônica de um marchista e se estudaram as seguintes variáveis cinemáticas: o comprimento do passo, a frequência de passos, o tempo de voo e a velocidade. ANOVA foi utilizada para determinar as diferenças significativas (p ≤0.05). Resultados: Em todos os três testes realizados, todas as variáveis aumentaram significativamente, embora a diferença mais significativa foi encontrada entre o tempo de voo e a frequência de passos p = 0.0000001, p <0,05. Conclusão: Porque o tempo de voo aumenta rapidamente, deve ser assegurado que não tenha nenhuma influência sobre a execução técnica do marchista, para que seja mais eficaz e, assim, evitar uma advertência ou desqualificação.
Assuntos
Atletismo , Atletismo/fisiologia , EsportesRESUMO
The purpose of this study was to clarify some of the characteristics of race-walking, especially the relationship between walking speed and oxygen requirement, and stride in race-walking and normal walking, and to examine whether race-walking is effective for the maintenance and promotion of health.<BR>The subjects were five male race-walkers (race-walker group) and five male college students (control group) .<BR>The results obtained were as follows:<BR>1. Under race-walk conditions, the highest speeds attained in the race-walker and control groups were 200-220 m/min and 160 m/min, respectively. Under normal walking conditions, however, the values were 140 m/min in both groups.<BR>2. A lower oxygen requirement was observed at slower speed during normal walking and at a higher speed (over 130 m/min) during race-walking.<BR>3. Oxygen requirement (ml/kg/100 m) in the race-walker group was minimal at 60-80 m/min during race-walking and at 60 m/min during normal walking. Values in the control group were minimal at 60 m/min under both walking conditions.<BR>4. The oxygen requirement in the race-walker group was less than that of the control group under both walking conditions.<BR>5. Under normal walking conditions, as the speed increased, both step-length and step frequency gradually increased, until step-length reached a limit of 80 cm. Thereafter, walking was maintained only by an increase in step frequency. However, in the race-walkes group, the subjects were capable of increasing their step-length further, and maintaining a higher speed (up to 220 m/min) .<BR>6. It was suggested that race-walking is one of the most efficient exercises for maintaining and improving health.
RESUMO
The purpose of this study was to clarify some of the characteristics of race-walking, especially the relationship between walking speed and oxygen requirement, and stride in race-walking and normal walking, and to examine whether race-walking is effective for the maintenance and promotion of health.<BR>The subjects were five male race-walkers (race-walker group) and five male college students (control group) .<BR>The results obtained were as follows:<BR>1. Under race-walk conditions, the highest speeds attained in the race-walker and control groups were 200-220 m/min and 160 m/min, respectively. Under normal walking conditions, however, the values were 140 m/min in both groups.<BR>2. A lower oxygen requirement was observed at slower speed during normal walking and at a higher speed (over 130 m/min) during race-walking.<BR>3. Oxygen requirement (ml/kg/100 m) in the race-walker group was minimal at 60-80 m/min during race-walking and at 60 m/min during normal walking. Values in the control group were minimal at 60 m/min under both walking conditions.<BR>4. The oxygen requirement in the race-walker group was less than that of the control group under both walking conditions.<BR>5. Under normal walking conditions, as the speed increased, both step-length and step frequency gradually increased, until step-length reached a limit of 80 cm. Thereafter, walking was maintained only by an increase in step frequency. However, in the race-walkes group, the subjects were capable of increasing their step-length further, and maintaining a higher speed (up to 220 m/min) .<BR>6. It was suggested that race-walking is one of the most efficient exercises for maintaining and improving health.