Scaling for the o(v, x )o2 to body size relationship among children
and adults.
Rogers, Danette M., Bridgette L. Olson, and Jack H. Wilmore.
The University of Texas at Austin, Austin, Texas 78712
APStracts 2:0229A, 1995.
The purpose of this study was to examine the relationship between
oxygen consumption and both body surface area (BSA) and body size
among 30 prepubertal children, 30 circumpubertal children, and 30
adults to determine which scaling model is most appropriate for
making comparisons between these populations. All subjects
particpated in maximal treadmill testing, and submaximal treadmill
testing at two absolute work rates. Resting metabolic rate was
measured on a subset of 48 subjects. It was determined that the
submaximal O(V, x )O2 (O(V, x )O2sm) to body size relationship
provided the most appropriate model for comparisons. Analyses
revealed a stronger linear relationship between O(V, x )O2sm and BSA
than O(V, x )O2sm and body mass. Logarithmic transformation of the
data revealed an allometric exponential relationship between O(V, x
)O2sm and body mass. The exponent relating body mass to O(V, x )O2sm
at 3 mph (1.34 ) was 0.60, while the exponent at 5 mph (2.24 ) was
0.75. O(V, x )O2 values at 5 mph were significantly less variable (P
Received 6 October 1994; accepted in final form 8 May 1995.
APS Manuscript Number A1039-4.
Article publication pending Journal of Applied Physiology.
ISSN 1080-4757 Copyright 1995 The American Physiological Society.
Published in APStracts on 30 May 1995.