Association between body mass index and cardiorespiratory fitness as predictor of health status in schoolchildren

Abstract

a b s t r a c tObjective: Evaluate the cardiorespiratory fitness (CRF) and the body mass index (BMI) of schoolchildren according to the cutoff points established by the Fitnessgram ® . Just as determine the influence of BMI on CRF in children and propose an equation for predicting VO 2 max from the body composition. Method: The sample consisted of 288 students of basic level of public education in the city of AracajuSergipe -Brazil, aged between 10 and 14 years, of these, 142 were female. To evaluate the CRF the 20-m shuttle run test was chosen. The results of the variable were classified in accordance with the criteria established by the Fitnessgram ® . Results: It was evidenced that the cardiorespiratory fitness on males was higher than females. Relative to BMI, there were no differences between the groups, while more than 80% of the entire sample behaved within criteria established by the Fitnessgram ® . On the other hand, 57% of the female group presented VO 2 max below criterion. It was confirmed an inverse relationship between VO 2 max and BMI on children and adolescents. Conclusion: The students in this study showed adequate levels of body composition and CRF below the area related to health, according to the criteria of the Fitnessgram ® . The proposition of a linear regression equation to estimate VO 2 max without exercise pointed out an inverse relationship between both variables.Palabras clave: Aptitud cardiorrespiratoria Composición corporal Índice de masa corporal Fitnessgram ® Escolares r e s u m e n Objetivo: Evaluar la aptitud cardiorrespiratoria y el índice de masa corporal (IMC) de escolares mediante los puntos de corte establecidos por la batería internacional de test Fitnessgram ® . Así como determinar la influencia del IMC en la aptitud cardiorrespiratoria (CRF) en niños y proponer una ecuación de predicción del VO 2 máx a partir de la composición corporal. Método: La muestra estuvo conformada por 288 estudiantes de nivel básico de la educación pública de la ciudad de Aracaju-Sergipe-Brasil, de edades comprendidas entre 10-14 años, de los cuales, 142 eran mujeres. Para evaluar el CRF fue utilizada la prueba de 20-m shuttle run test (PCN). Los resultados de la variable se clasificaron de acuerdo con los criterios de aplicación establecidos por el test internacional Fitnessgram ® . Resultados: Se evidenció que la CRF en varones fue mayor que en las mujeres. Relativo al IMC, no hubo diferencias entre los grupos, mientras que más de 80% de toda la muestra se comportó dentro de los criterios establecidos por la Fitnessgram ® . Por otro lado, el 57% del grupo femenino presentó VO 2 máx por debajo de los niveles. Se confirmó una relación inversa entre el VO 2 máx y el IMC en niños y adolescentes. Conclusión: Los escolares, en este estudio, mostraron niveles adecuados de composición corporal y CRF por debajo del área relacionada con la salud de acuerdo con los criterios de Fitnessgram

Association Between Body Mass Index and Cardiorespiratory Fitness Among Patients Undergoing Cardiac Stress Test in DR Hasan Sadikin General Hospital Bandung

“…9 The difference in measurement method could explain the different result with our study, because although indirect method is valid and more feasible, direct method still has the best accuracy in assessing VO2max. 20 Similar finding was shown in the study by Bonney et al 10 (r = -0.336, p < 0.001) among 151 adolescent girls and Hingorjo et al 11 (r = -0.558, p < 0.001 in males, r = -0.246, p < 0.028 in females) among 133 young adults, and De Araujo et al 12 (r 2 = 0.907, p = 0.026 in girls, r 2 = 0.850, p = 0.012 in boys) among 288 children. On the contrary, a study conducted by Hawari et al found a significant but weak positive relationship (β = 0.11, p = 0.000) between BMI and duration of cardiopulmonary exercise testing in 138 study subjects consisted of waterpipe tobacco smokers and non-smokers.…”

“…Most studies found a negative association between both variables but some studies had different results. [9][10][11][12][13][14][15][16][17][18] The objective of this study is to analyze the association between BMI and CRF that is measured by cardiac stress test.…”

Prediction of Maximal Oxygen Uptake by Six-Minute Walk Test and Body Mass Index in Healthy Boys

“…This result also was observed in previous research on children and adolescents in which the greater the BMI, the lower the VO2max. 40,41 In model 2, VO2max could be estimated by only 6MWD (R 2 = 0.51, SEE = 4.17 mL/kg/miñ 10% of the mean VO2max, P < .001). This result was consistent with previous research in which the greater the 6MWD, the greater the VO2max in children and adolescents.…”

Design and cross-validation of prediction equation based on 6-minute walk test for assessing the cardiorespiratory efficiency in Iranian adolescent boys

“…Differences between the subjects in these studies (healthy vs. sick) may explain the inconsistent results. According to the studies, the most important variables affecting VO2peak are weight and BMI (27,28).…”