Produção Nacional
Revisado por pares
Performance and Metabolic Demand of a New Repeated-Sprint Ability Test in Basketball Players: Does the Number of Changes of Direction Matter?
2016; Lippincott Williams & Wilkins; Volume: 31; Issue: 9 Linguagem: Inglês
10.1519/jsc.0000000000001710
ISSN1533-4287
AutoresAlessandro Moura Zagatto, Luca Paolo Ardigò, Fábio Augusto Barbieri, Fábio Milioni, Antonio Dello Iacono, Bruno Henrique Ferreira Camargo, Johnny Padulo,
Tópico(s)Cardiovascular and exercise physiology
ResumoAbstract Zagatto, AM, Ardigò, LP, Barbieri, FA, Milioni, F, Dello Iacono, A, Camargo, BHF, and Padulo, J. Performance and metabolic demand of a new repeated-sprint ability test in basketball players: does the number of changes of direction matter? J Strength Cond Res 31(9): 2438–2446, 2017—This study compared 2 repeated-sprint ability (RSA) tests in basketball players. Both tests included 10 × 30-m sprints, with the difference that the previously validated test (RSA 2COD ) featured 2 changes of direction (COD) per sprint, whereas the experimental test (RSA 5COD ) featured 5 CODs per sprint. Test performances and metabolic demands were specifically assessed in 20 basketball players. First, RSA 5COD test-retest reliability was investigated. Then, RSA 2COD , RSA 5COD sprint times, peak speeds, oxygen uptake (V̇ o 2 ) and posttest blood lactate concentration [La − ] were measured. The RSA 5COD results showed to be reliable. RSA 2COD performance resulted better than the RSA 5COD version ( p < 0.01), with shorter sprint times and higher peak speeds. Over sprints, the tests did not differ from each other in terms of V̇ o 2 ( p > 0.05). Over whole bout, the RSA 2COD was more demanding than the RSA 5COD , considering overall metabolic power requirement (i.e., VO 2 -driven + [La − ]-driven components). Given that RSA 5COD (a) mimics real game-play as sprint distance and action change frequency/direction and (b) has the same metabolic expenditure per task completion as metabolic cost, RSA 5COD is a valuable option for players and coaches for training basketball-specific agility and assessing bioenergetic demands.
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