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Initial sprint time, total sprint times and the sprint decrement score were calculated.
There was no difference in the sprint decrement score between or within conditions.
Tennis Australia recommends 10×20 m with 20 s rest, with two performance scores: the real accumulated sprint time in seconds and the percent decrement score.
The similarity in sprint decrement score and the reduction in initial/total sprinting times are indicative of a fast-developing fatigue during the repeated maximal efforts, resulting from match-play, rather than dehydration.
61 Our data indicate that, despite only modest dehydration (<1%), 15 m sprint and total sprint times were reduced postmatch relative to prematch in both conditions, whereas the sprint decrement score was maintained (albeit slightly reduced).
During the repeated-sprint ability test, initial (+2.3% and +3.1%) and cumulated sprint (+1.5% and +2.8%) times increased from prematch to midmatch and postmatch, respectively (p<0.001), while the sprint decrement score did not change.
Similar(52)
2 Furthermore, the performance score selection seems to be difficult, with the total accumulated sprint time being more reliable than the decrement scores.
60 It has been suggested that anaerobic power scores are major determinants of overall RSA performance (eg, repeated mean power or speed) and that aerobic capacity is closely associated with the percentage decrement scores between the sprints.
61 Assessments of RSA generally provide two performance indices: (1) the overall test performance (eg, total sprint time or work (s or kJ); mean sprint time or power (s or W); best sprint time (s)) and (2) percentage decrement scores.
In addition, fatigue indices for work done (FI W ) and peak power (FI P ) are calculated from the decrement scores in work done (Wdec) and peak power output (PPdec).
This impairment of function was accompanied by a deterioration in speed of mental processing as demonstrated by the decrement in score for the Digit Symbol Substitution Test.
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