Analysis of the effect size of overweight in speed-agility test among adolescents reference values according to sex, age and BMI reference values according to sex, age and BMI
DOI:
https://doi.org/10.47197/retos.v1i40.79275Keywords:
speed, fitness, obesity, adolescent, physical education, (velocidad; actividad física; obesidad; adolescentes; educación física)Abstract
The objective of the present cross-sectional study was to quantify the effect size of overweight on the results of speed-agility in adolescents and to report percentile tables based on sex, age and BMI. Was hypothesized that the effect size obtained from the difference between normal-weight and overweight youth would be equal to or greater than the differences between sexes within the same age group. A total of 10.439 Spanish adolescents aged 13.72 ± 1.42 years from 42 secondary schools participated in the research. Speed-agility was evaluated using the 4x10 m test. The effect size was analysed using the adjusted Hedges’ ğ. The findings regarding sex show that 92.74% and 86.98% of normal-weight and overweight girls, respectively, attained lower speed-agility than boys. With regard to body composition, the percentages are also high, but they are a bit lower than those for sex. So, 77.26% and 70.52% of overweight boys and girls, respectively, showed lower speed-agility than their normal-weight peers. The differential effect size between boys and girls is higher than between normal-weight and overweight adolescents in speed-agility. In spite of this, the results suggest that BMI should be taken into account in assessing the speed-agility of young people.
Resumen. El objetivo de este estudio transversal fue cuantificar el tamaño del efecto del sobrepeso en los resultados de velocidad-agilidad en adolescentes e informar las tablas de percentiles en función del sexo, la edad y el IMC. Se planteó la hipótesis de que el tamaño del efecto obtenido entre los jóvenes con sobrepeso y normopeso sería igual o mayor que las diferencias entre los sexos dentro del mismo grupo de edad. Un total de 10.439 adolescentes españoles de 13.72 ± 1.42 años de 42 centros de educación secundaria participaron en la investigación. Se evaluó la velocidad-agilidad utilizando la prueba de 4x10 m. El tamaño del efecto se analizó ajustando por la prueba ğ de Hedges. Los resultados con respecto al sexo muestran que el 92.74% y el 86.98% de las niñas con sobrepeso y normopeso, respectivamente, alcanzaron una velocidad-agilidad menor que los niños. Con respecto a la composición corporal, los porcentajes también son altos, pero son un poco más bajos que los del sexo. El 77.26% y 70.52% de los niños y niñas con sobrepeso, respectivamente, mostraron menor velocidad-agilidad que sus pares de peso normal. Como conclusión, el tamaño del efecto diferencial entre niños y niñas es mayor que entre adolescentes con normopeso y sobrepeso en velocidad-agilidad. A pesar de esto, los resultados sugieren que se debe tener en cuenta el IMC al evaluar la velocidad-agilidad de los jóvenes.
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Copyright (c) 2020 Alberto Ruiz-Ariza, Manuel J. De la Torre-Cruz, Sebastián López-Serrano, Emilio J. Martínez-López, Jaime Cárcamo-Oyarzún

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