Abstract
Performance in The World Indoor Rowing Championships (WIRC) is based on the time (T) to row 2500m on an accommodating resistance rowing ergometer (Concept IIC). In the WIRC there are separate age (A) categories but only two weight classes, thus invoking a significant body size penalty, particularly against the smallest competitors within each category. Our purpose, then, was to use multivariate allometric scaling (MAS) to express, for each rower, T scaled by stature (S: the body size scaling variable) and A as: T·Sa·Ab. This expression would allow for individual comparisons of T with the effects of S and A partialled out. Furthermore, it would eliminate the need for age or body size classes while providing for more precision in the evaluation of T. Subjects were 148 WIRC (1995) male competitors (A = 30.3 ± 15.6 yr, S = 1.83±.07m). MAS indicated that T·S·A-.06 is an optimal expression of rowing performance if the objective is to control for S and A. We also scaled T by S for those, A<40 (n = 109), and found that T·S is an optimal and more feasible convention for this age group. Use of either the T·S or T·S·A-.06 expressions dramatically changed original WIRC race results. In conclusion, we recommend the use of T·S·A-.06 or T·S (17≤A≤39) to adjust WIRC performance in competitive adult male rowers.
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