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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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FAMILIARIZATION, RELIABILITY, AND COMPARABILITY OF A 40-M MAXIMAL SHUTTLE RUN TEST |
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Mark Glaister |
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St Mary's University College, Strawberry Hill, Twickenham, UK. . |
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© Journal of Sports Science and Medicine (2009) 8, 77 - 82 Search Google Scholar for Citing Articles |
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| ABSTRACT | |||
| The aims of this study were to examine familiarization and reliability
associated with a 40-m maximal shuttle run test (40-m MST), and to compare
performance measures from the test with those of a typical unidirectional
multiple sprint running test (UMSRT). 12 men and 4 women completed four
trials of the 40-m MST (8 × 40-m; 20 s rest periods) followed by one trial
of a UMSRT (12 × 30-m; repeated every 35 s); with seven days between trials.
All trials were conducted indoors and performance times were recorded via
twin-beam photocells. Significant between-trial differences in mean 40-m
MST times were indicative of learning effects between trials 1 and 2. Test-retest
reliability across the remaining trials as determined by coefficient of
variation (CV) and intraclass correlation coefficient (ICC) revealed: a)
very good reliability for measures of fastest and mean shuttle time (CV
= 1.1 - 1.3%; ICC = 0.91 - 0.92); b) good reliability for measures of blood
lactate (CV = 10.1 - 23.9%; ICC = 0.74 - 0.82) and ratings of perceived
exertion (CV = 5.3 - 7.6%; ICC = 0.79 - 0.84); and c) poor reliability for
measures of fatigue (CV = 38.7%; ICC = 0.59). Comparisons between performance
indices of the 40-m MST and the UMSRT revealed significant correlations
between all measures, except pre-test blood lactate concentration (r = 0.
47). Whilst the 40-m MST does not appear to provide more information than
can be gleaned from a typical UMSRT, following the completion of a familiarization
trial, the 40-m MST provides an alternative and, except for fatigue measures,
reliable means of evaluating repeated sprint ability.
Key words: Repeated sprint ability, intermittent, agility, multiple sprint work. |
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