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Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Online ISSN 1827-1812
Bergmann G. G. 1, De Araújo Bergmann M. L. 1, Mattos De Castro A. A. 1, Del’corona Lorenzi T. 2, Dos Santos Pinheiro E. 2, Moreira R. B. 3, Carriconde Marques A. 4, Gaya A. 2
1 Health Science Center, Federal University of Pampa, Uruguaiana, Brazil;
2 Physical Education College, Federal University of Rio Grande do Sul, Porto Alegre, Brazil;
3 Physical Education College, Lutheran University of Brazil, Canoas, Brazil;
4 Physical Education College, Federal University of Pelotas, Pelotas, Brazil
AIM: We aimed to develop an equation for predicting peak oxygen uptake for the nine minutes run/walk test taking into account the demographic and anthropometric variables in adolescents.
METHODS: Nine minutes run/walk, peak oxygen uptake, stature, body mass and body mass index in 84 (43 female) adolescents ageing 10 to 14 years old were assessed. Subjects were divided in validation and cross-validation groups. Linear regression analysis was used to measure the multiple relationships between nine minutes run/walk test, age, gender, and anthropometrics variables (as independent variables) and peak oxygen uptake (as a dependent variable) in validation group. Bland and Altman method was used to test agreement between the measured and estimated values.
RESULTS: The results indicated that the best model to predict peak oxygen uptake included the nine minutes run/walk test, body mass index and gender. These variables presented a multiple correlation coefficient of 0.73 and the standard error of estimate of 4.16 ([mL/kg]/min). Accuracy of the model was confirmed when the equation developed on the validation group was applied to the cross-validation group and to the total sample. Bland and Altman method indicated no systematic bias and no heteroscedasticity in both validation and cross-validation group.
CONCLUSION: Therefore, we concluded that our multiple equation regression (peak oxygen uptake = 47.547 + 0.008[9-min] – 0.805 [BMI] + 4.236 [gender]) is appropriate for predicting peak oxygen uptake in adolescents aged from 10 to 14 years old.