Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license
Authors
Abstract
The aim of this study was to investigate the effect of maturity level and body composition on the validity of allometric equations of VO2peak in obese and non-obese girls. 80 girls aged between 12 and 17 were randomly selected from schools in Hamedan city and divided into two groups: overweight-obese (BMI>85%) and normal (BMI<85%). Their biological age was determined by dental age method. VO2peak was assessed by Cureton test and allometric equations of Milano and Beunen. Pearson correlation and Bland–Altman methods were used to determine the validity. VO2peak was significantly different among three methods (P<0.01(. With the intervention of maturity, mean of VO2peak was not significantly different (P>0.05(. Validity of practical capacity in the obese adolescent girls with normal puberty was considerable (r =0.92, P<0.01). According to the SE values, Milano allometric equation had more accuracy to predict VO2peak in obese adolescent girls with normal maturation and non-obese subjects. Bland–Altman method showed a high agreement between the VO2peak of Cureton test and the allometric equation with a coefficient of 0.59. Validity of practical capacity in the obese subjects with abnormal maturation was significant (r=0.82, P<0.01); it was r =0.94, Pr =0.80, P2peak can be used to assess the level of cardiorespiratory fitness in adolescent girls.
Keywords
.360- امید دانش ( 1991 )، ص 380
2.Basset DR, Howley ET. Limiting factors for maximum oxygen uptake and determinants
of endurance performance. Med Sci Sports Exerc. 2000; 32: 70-84.
3.Beunen, G.; A.D.G. Baxter; R.L. Jones; M. Mirwald; J. Thomise; R.M. Lefever; Malina;
and D.A. Bailey (2002). “Intra individual Allometric development of aerobic power in 8-16
year old boy”. Med. Sci- sport Exerc. 34: 503-510.
4. Bland JM, Altman DG. (1986). "Statistical methods for assessing agreement between
two methods of clinical measurement". Lancet 1: PP: 307-310.
5. Cao ZB, Miyatake N, Higuchi M, Takata KI, Miyachi M, Tabata I. (2009)."Prediction
of VO2max with daily step counts for Japanese adult women". Eur J Appl Physiol 105: PP:
289-296.
6. Cooper D. M, Weiler-Ravell D, Whipp B.J & Wasserman K. Aerobic parameters of
exercise as a function of body size during growth in children. Journal of Applied Physiology.
56:628-634, 1984.
7. Cureton, k., sloniger, M. & et al.(1995) A generalized equation for prediction of VO2 peak
from 1-mile run/walk performance. Med & Sci in sport & Exerc.27:445-451.
8. Dencker M, Thorsson O, Karlsson MK, Lindén C, Eigberg S, Wollmer P, et al. Gender
differences and determinants of aerobic fitness in children aged 8-11 years. J Appl Physiol.
2007; 99: 19-26.
9. Ebbeling cb, pawlak DB, Ludwig DS, (2002). Childhood obesity: public health crisis:
common sense cure The lancet, 2002:360: 473-82.
10.Eisenmann, J.C. Pivarnik, J.M. Malina, R.M (2001). Scaling peak V2peak to body mass
in young male and female distance runners. J Appl Physiol90:2172-2180.
11. Fornetti et al, (1999, sep). Reliability and validity of body composition measures in
female athletes. J Appl physiol: 871(3): 1114-22.
12. George JD, Stone WJ, Burkett LN. (1997). "Non-exercise VO2max estimation for
physically active college students". Med Sci Sports Exerc29: PP: 415-423.
13. Huxley, J. S. Problems of Relative Growth. Baltimore, MD: The Johns Hopkins Univ.
Press, 1993.
14. Janz, K. F, T. L. Burns, J. D. Witt, and L. T. Mahoney. Longitudinal analysis of
scaling VO2 for differences in body size during puberty: the Muscatine Study. Med. Sci.
Sports Exerc. 30:1436–1444, 1998.
15. Loftin M, Sotheen M, Trodclair L, O’Hanlon A, Miller J, Udall J. Scaling VO2 peak in
obese and non-obese girl. Obese Rev. 2001; 9: 290-6.
16. Maffeis C, Schena F, Zaffanello M, Zoccante L, Schultz Y, Pinelli L. Maximal aerobic
power during running and cycling in obese and non-obese children. Acta Paediatr. 1994; 83:
223-6.
17. Mahony, L.T.; K.F. Janz; Q Res (1997). “Modeling the influence of body size on VO2
peak: effects of model choice and body composition”. Exerc Sport. Mar, 68 (1): 1-9.
18. McArdle WD, Katch FI, Katch VL. Exercise Physiology: Energy, Nutrition, and
Human Performance. 4th ed. Philadelphia: Lea and Febiger; 1996, pp. 188–213.
19. Milano, G.E. Rodacki, A. Radominski, R.B. Leite, N (2009). Scale of VO2peak in Obese
and Non-obese adolescents by different Methods. Arq Bras Cardiol 2009; 93(6): 554-557.
20. Nevill, A. M., and R. L. Holder. Modelling maximum oxygen uptake. A case study in
non-linear regression model formulation and comparison. Appl. Stat. 43: 653–666, 1994.
21. Nevill, A. M., R. Ramsbottom, and C. Williams. Scaling physiological measurements
for individuals of different body size. Eur. J. Appl. Physiol. Occup. Physiol. 65: 110–117,
1992.
22. Rowland T,Vanderburgh P & CunninghamL. Body Size and the Growth of Maximal
Aerobic Power in Children: A Longitudinal Analysis. Pediatric Exercise Science, 1997,9,
262-274.
23. Sanada K, Midorikawa T, Yasuda T, Kearns CF, Abe T. (2007)."Development of non -
exercise prediction models of maximal oxygen uptake in healthy Japanese young men". Eur J
Appl Physiol 99: PP: 143-148.
24. Semiz S, Kurt F, Kurt D, Zencir M, Sevinc Z (2009). Factors affecting onset of puberty
in Denizli province in Turkey. Turk J Pediatr; 51: 49-55.
25. White, Craig R.& Seymour, Roger S (2005). Review Allometric scaling of mammalian
metabolism. The Journal of Experimental Biology 208, 1611-619Published by The Company
of Biologists 2005, doi: 10.1242/jeb.01501.
26. Wier LT, Jackson AS, Ayers GW, Arenare B. (2006). "Non-exercise models for
estimating VO2max with waist girth, percent fat, or BMI". Med Sci Sports Exerc 38: PP: 555-
561.
27. Winter, E. M. Partitioning out difference in size. Pediatr. Exercise Sci. 4: 296–301,
1992.
28.Zanconato S, Baraldi E, Santuz P, Rigon F, Vido L, Dalt LD, et al. Gas exchange
during exercise in obese children. Eur J Pediatr. 1989; 1148: 614-7
)