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. 2016 Apr 22:7:133.
doi: 10.3389/fphys.2016.00133. eCollection 2016.

Repeated Sprint Ability in Young Basketball Players: Multi-direction vs. One-Change of Direction (Part 1)

Johnny Padulo  1 , Nicola L Bragazzi  2 , Pantelis T Nikolaidis  3 , Antonio Dello Iacono  4 , Giuseppe Attene  5 , Fabio Pizzolato  6 , Juliano Dal Pupo  7 , Alessandro M Zagatto  8 , Marcello Oggianu  5 , Gian M Migliaccio  9
Affiliations

Repeated Sprint Ability in Young Basketball Players: Multi-direction vs. One-Change of Direction (Part 1)

Johnny Padulo et al. Front Physiol. .

Abstract

The aim of the present study was to examine the reliability of a novel multi-direction repeated sprint ability (RSA) test [RSM; 10 × (6 × 5-m)] compared with a RSA with one change of direction [10 × (2 × 15-m)], and the relationship of the RSM and RSA with Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1) and jump performances [squat jump (SJ) and counter-movement-jump (CMJ)]. Thirty-six (male, n = 14, female n = 22) young basketball players (age 16.0 ± 0.9 yrs) performed the RSM, RSA, Yo-Yo IR1, SJ, and CMJ, and were re-tested only for RSM and RSA after 1 week. The absolute error of reliability (standard error of the measurement) was lower than 0.212 and 0.617-s for the time variables of the RSA and RSM test, respectively. Performance in the RSA and RSM test significantly correlated with CMJ and SJ. The best time, worst time, and total time of the RSA and RSM test were negatively correlated with Yo-Yo IR1 distance. Based on these findings, consistent with previously published studies, it was concluded that the novel RSM test was valid and reliable.

Keywords: athletic performance; physical endurance; physical fitness; shuttle running; team sport.

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Figures

Figure 1
Figure 1
Graphical representation of the multi change of direction (RSM) test. Each shuttle started from the point A and the participant decided independently whether sprint toward the point B or the point D. After having touched the target line with one foot and they returned to the starting point A and subsequently, they had to necessarily sprint to the point C and back to the point A and finally sprint to the remaining point (D or B).
Figure 2
Figure 2
Graphical representation of the variables studied for repeated sprint ability (RSA) and multi change of direction (RSM) tests. From the top to bottom are reported: Best time, Worst time, Total time, Blood lactate concentration, Fatigue Index, and the rating of perceived exertion (RPE). The significant value is fixed to P < 0.05 and it is reported with an “*” while § indicate the significant difference between test and re-test.
Figure 3
Figure 3
Correlation between repeated sprint ability (RSA) and multi change of direction (RSM) tests for each variables. BT, Best time; WT, Worst time; TT, Total time; BLa, Blood lactate concentration; FI, Fatigue Index; and RPE, the rating of perceived exertion. For each graph is reported the regression line (continuous line) and the 95% confident interval (dash line).
Figure 4
Figure 4
The first two graphs show the correlation between Total time of the repeated sprint ability (RSA) test (black dots) and the multichange of direction (RSM) test (white dots) with the height of the jump of the squat jump (SJ) (first) and the counter movement jump (CMJ) (second). The dashed line is the correlation with the multi change of direction test and the continuous line is the correlation with the repeated sprint ability (RSA) test. The graph above shows the correlation between the Total time of the repeated sprint ability and the multi change of direction tests with the total distance performed during the Yo-Yo Intermittent Recovery Test. The dashed line is the correlation with the multi change of direction (RSM) test while the continuous line is the correlation with the repeated sprint ability test.
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