Int J Sports Med 2019; 40(12): 774-778
DOI: 10.1055/a-0929-6985
Training and Testing
© Georg Thieme Verlag KG Stuttgart · New York

Allometric Scale Corrects Performance Outcomes in Special Judo Fitness Test

Paulo Estevão Franco-Alvarenga
1   Departament of Physical Education, Federal University of Lavras, Lavras, Brazil
2   Exercise Psychophysiology Research Group, School of Arts Sciences and Humanites, University of Sao Paulo, Sao Paulo, Brazil
,
Guilherme Assunção Ferreira
1   Departament of Physical Education, Federal University of Lavras, Lavras, Brazil
3   Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Brazil
,
Adriano Eduardo Lima-Silva
4   Human Performance Research Group, Technological Federal University of Parana, Curitiba, Brazil
,
Rômulo Bertuzzi
5   School of Physical Education and Sport, University of São Paulo (USP), São Paulo, Brazil
,
Flávio Oliveira Pires
2   Exercise Psychophysiology Research Group, School of Arts Sciences and Humanites, University of Sao Paulo, Sao Paulo, Brazil
,
Fernando Roberto De Oliveira
1   Departament of Physical Education, Federal University of Lavras, Lavras, Brazil
› Author Affiliations
Further Information

Publication History



accepted 13 May 2019

Publication Date:
02 September 2019 (online)

Abstract

We compared results of Special Judo Fitness Test (SJFT) performance of young athletes of two different age categories after correcting body mass (BM) variations by allometric scales. Thirty young judokas (14.2±3.6 years) belonging to two age categories underwent an SJFT: under 15 (U15) years old (12.1±2.4 years; 46.5±15.6 kg; 152.4±11.2 cm) and under 21 years old (U21) (18.2±0.8 years; 77.1±23.5 kg; 174.2±8.9 cm). Allometric exponents of −0.33 and 0.67 were used to correct the influence of BM variations on SJFT performance results. After correction using the –0.33 exponent, U21 showed a higher number of throws (TNT) than U15 (85.5±9.9 and 68.8±12.0, p<0.05, respectively), although the SJFT index had been similar between these groups (67.3±10.1 and 61.7±8.1, p>0.05, respectively). In contrast, TNT normalized by the 0.67 exponent was higher in U15 than U21 (1.55±0.29 and 1.17 ± 0.25, p<0.05, respectively). Likewise, the SJFT index was higher in U15 than in U21 when using the same exponent (1.55±0.29 and 1.17±0.25, p<0.05, respectively). In conclusion, the −0.33 exponent may be useful to remove the influence of BM variations, thus discriminating SJFT performance results in U15 and U21 judokas. Moreover, the 0.67 exponent may overestimate SJFT indices in low-age judokas.

 
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