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Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
Online ISSN 1827-1928
Ricardo T. SANT’ANNA 1, 2, Flávio A. DE SOUZA CASTRO 1
1 Universidade Federal do Rio Grande do Sul, UFRGS, Escola de Educação Física, Fisioterapia e Dança, Porto Alegre, RS, Brazil; 2 CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, Brazil
BACKGROUND: To verify whether it is possible to predict aerobic power in amateur 15-a-side rugby union players through the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IRT1) and the 5-m Multiple Shuttle Test (5-m MST).
METHODS: Forty-two amateur players, 22 forwards and 20 backs, were evaluated in three phases: (I) maximum treadmill test in the laboratory; (II) field test set by a drawing in the first phase; and (III) second field test. Descriptive, comparison, correlation, regression and level of agreement analyses were performed.
RESULTS: Backs, when compared to forwards, showed a higher VO2max (61.7 ± 15 ml.kg-1.min-1 and 51.6 ± 10.1 ml.kg-1.min-1 respectively), Yo-Yo IRT1 final level (16.4 ± 0.8 and 14.9 ± 0.9 respectively) and Yo-Yo IRT1 total distance (1283.3 ± 312.5 m and 792 ± 277.6 m respectively), and a higher final distance in the 5-m MST (686.8 ± 36.6 and 642.9 ± 46.5 respectively). Significant correlations were found between the result and the total distance on the Yo-Yo IRT1 and the VO2max (r = 0.425 and r = 0.459 respectively). Using the total distance covered in the Yo-Yo IRT1, the VO2max of amateur 15-a-side rugby union players can be estimated through the equation VO2max = 0.016(DIST Yo-Yo) + 40.578.
CONCLUSION: Yo-Yo IRT1 is most useful when the objective is to evaluate the aerobic power of amateur RU players in comparison with the 5-m MST.