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THE MARS FOR SQUAT, COUNTERMOVEMENT, AND STANDING LONG JUMP PERFORMANCE ANALYSES: ARE MEASURES REPRODUCIBLE?
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Swedish Winter Sports Research Centre)
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Swedish Winter Sports Research Centre)
2014 (English)In: JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, ISSN 1533-4287, Vol. 28, no 7, 1849-1857 p.Article in journal (Refereed) Published
Abstract [en]

The MARS for squat, countermovement, and standing long jump performance analyses: are measures reproducible? J Strength Cond Res 28(7): 18491857, 2014-Jump tests are often used to assess the effect of interventions because their outcomes are reported valid indicators of functional performance. In this study, we examined the reproducibility of performance parameters from 3 common jump tests obtained using the commercially available Kistler Measurement, Analysis and Reporting Software (MARS). On 2 separate days, 32 men performed 3 squat jumps (SJs), 3 countermovement jumps (CMJs), and 3 standing long jumps (LJs) on a Kistler force-plate. On both days, the performance measures from the best jump of each series were extracted using the MARS. Changes in the mean scores, intraclass correlation coefficients (ICCs), and coefficients of variations (CVs) were computed to quantify the between-day reproducibility of each parameter. Moreover, the reproducibility quantifiers specific to the 3 separate jumps were compared using nonparametric tests. Overall, an acceptable between-day reproducibility (mean +/- SD, ICC, and CV) of SJ (0.88 +/- 0.06 and 7.1 +/- 3.8%), CMJ (0.84 +/- 0.17 and 5.9 +/- 4.1%), and LJ (0.80 +/- 0.13 and 8.1 +/- 4.1%) measures was found using the MARS, except for parameters directly relating to the rate of force development (i.e., time to maximal force) and change in momentum during countermovement (i.e., negative force impulse) where reproducibility was lower. A greater proportion of the performance measures from the standing LJs had low ICCs and/or high CVs values most likely owing to the complex nature of the LJ test. Practitioners and researchers can use most of the jump test parameters from the MARS with confidence to quantify changes in the functional ability of individuals over time, except for those relating to the rate of force development or change in momentum during countermovement phases of jumps.

Place, publisher, year, edition, pages
2014. Vol. 28, no 7, 1849-1857 p.
Keyword [en]
force, kinetics, power, reliability, testing
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-22591DOI: 10.1519/JSC.0000000000000343ISI: 000338782600009Scopus ID: 2-s2.0-84905972315OAI: oai:DiVA.org:miun-22591DiVA: diva2:739120
Available from: 2014-08-20 Created: 2014-08-19 Last updated: 2014-09-10Bibliographically approved

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Hebert-Losier, KimBeaven, C. Martyn
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CiteExportLink to record
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Citation style
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