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Reliability, Usefulness, and Validity of the 30–15 Intermittent Ice Test in Young Elite Ice Hockey Players
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Reliability, Usefulness, and Validity of the 30–15 Intermittent Ice Test in Young Elite Ice Hockey Players
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Journal Article
Reliability, Usefulness, and Validity of the 30–15 Intermittent Ice Test in Young Elite Ice Hockey Players
2011
Overview
Buchheit, M, Lefebvre, B, Laursen, PB, and Ahmaidi, S. Reliability, usefulness and validity of the 30-15 intermittent ice test in young elite ice hockey players. J Strength Cond Res 25(5)1457-1464, 2011-The purpose of this study was to examine the reliability, usefulness, and validity of the 30-15 Intermittent Ice Test (30-15IIT) in 17 young elite ice hockey players. For the reliability and usefulness study, players performed the 30-15IIT 7 days apart. For the validity study, data derived from the first 30-15IIT were compared with those obtained from the 30-15 Intermittent Fitness Test (30-15IFT, the running version of this test used as a reference marker for its ability to assess cardiovascular fitness in the field, that is, o2peak). Maximal speed, heart rate at exhaustion (HRpeak) and postexercise blood-lactate levels ([La]b) were collected for all tests, whereas submaximal HR was taken at stages 4 and 8 (HRstage4 and HRstage8) during the 30-15IIT. All intra-class correlation coefficients were >0.94. Coefficients of variation were 1.6% (90% CI, 1.3-2.3), 1.7% (1.3-2.8), 1.4% (1.0-2.2), and 0.7% (0.5-1.1) for maximal skating speed, HRstage4, HRstage8, and HRpeak, respectively. Correlations between maximal velocities and HRpeak obtained for the 30-15IIT vs. 30-15IFT were very large (r = 0.72) and large (r = 0.61), respectively. Maximal skating speed was also largely correlated to estimated o2peak (r = 0.71). There was however no correlation for [La]b values between both tests (r = 0.42). These results highlight the specificity of the on-ice 30-15IIT and show it to be a reliable and valid test for assessing cardiorespiratory fitness in young elite players. Coaches could interpret a change in performance of at least 2 stages, or a change in submaximal HR of more than 8% (≈8 b·min) during the eighth stage to be a meaningful change in skating fitness.
Publisher
National Strength and Conditioning Association,Lippincott Williams & Wilkins Ovid Technologies
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