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Test-retest reliabilitet av TrainiTest i hängande marklyft
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Sports Medicine.
2012 (Swedish)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Trainitest is a training- and testingsystem that is driven by an electric motor instead of a traditional weight stack. Trainitest measures peak, average power (watt), peak, average force (newton) and peak and average speed (mm/s). An important part of research is that the test that is performed is reliable and valid. Reliability should be tested first because the testing device will never be considered valid if it isn’t reliable. The purpose of this study is to investigate test-retest reliability of TrainiTest measuring parameters power, force and speed in the concentric and eccentric phase. The study included seven participants, all elite active athletes including one drop out after the first test which resulted in a final number of 6 participants (n = 6). The participants were active at the elite level and each participant was tested on two occasions at the same time of day at weekly intervals between test 1 and test 2. In the test the participants performed three repetitions in a sequence at four different loads and at two different speeds, 4.0m/s and 0.5m/s. After each load the participants rested for three minutes. The results of the study showed in general no reliability either at current peak values or average values under different loads and speeds, in the concentric or eccentric phase. The conclusion is that the results of the study are not directly applicable to Trainitest when its software has been updated and new versions have come out since the study ended. More studies should be done to examine TrainiTest and until then should it primarily be used as a training device.

Place, publisher, year, edition, pages
National Category
Sport and Fitness Sciences
URN: urn:nbn:se:umu:diva-56467OAI: diva2:535026
Educational program
Study Programme for Sports Science
Available from: 2012-06-20 Created: 2012-06-19 Last updated: 2012-06-20Bibliographically approved

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