摘要：The purpose of this study was to evaluate the effects of 3 pre-conditioning interventions on sprint ability (RSA) performance in professional handball players. Seven handball professional athletes of the adult male category (22.2 ± 5.8 yrs, 81.3 ± 20.7 kg, 1.79 ± 0.10 m) were submitted to the following experimental sessions: (a) 1- repetition maximum (1RM) test on the half squat exercise and the RSA test (no previous conditioning activities); and (b) 3 preconditioning activities (squat exercise (SQ), plyometrics (PL), and sprints with additional load (SL). The SQ consisted of 1 series x 2 repetitions at 90% 1RM. The PL was composed by 1 set of 4 CMJ on a 50 cm barrier, and the SL was 1 sprint of 15 m with an additional load of 20% of the individual’s body mass. The findings indicate a significant improvement in the mean sprint time after the SL pre-conditioning activity (P<0.001). The AG and PL pre-conditioning activities were not able to induce increment RSA performance (P>0.05). The SL pre-conditioning activity presented a greater number of responders compared to the AG and the PL pre-conditioning activities in the investigated sample. The SL pre-conditioning activity could be used as a pre-exercise intervention that involves multiple sprints. In addition, it can also be used as an alternative warm-up method. The SQ and PL pre-conditioning activities were associated with a reduced performance in subsequent maximal sprints, although an individual response was observed within the investigated sample.
