Within-day and between-days reproducibility of isokinetic parameters of knee, trunk and shoulder movements

Reference:

Blacker, S. D., Fallowfield, J. L., Bilzon, J. L. J. and Willems, M. E. T., 2010. Within-day and between-days reproducibility of isokinetic parameters of knee, trunk and shoulder movements. Isokinetics and Exercise Science, 18 (1), pp. 45-55.

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Official URL:

http://dx.doi.org/10.3233/IES-2010-0367

Abstract

The purpose of this study was to examine the within-day and between-days reproducibility of isokinetic parameters of knee, shoulder and trunk movements. Ten healthy males (age 30 +/- 8 years, height 1.79 +/- 0.05 m, body mass 79.4 +/- 8.3 kg) performed isokinetic concentric contractions (knee: 60 and 180 degrees/s; shoulder: 60 and 180 degrees/s: and; trunk: 15 and 60 degrees/s) at 0 (baseline), 2, 24, 48 and 72 hours. Reproducibility of the baseline peak moment, mean peak moment and maximum work was assessed using Bland and Altman limits of agreement and pre-planned paired t-tests (P < 0.05). Peak moment of knee, trunk and shoulder extensors at low velocities had highest reproducibility within and between days over a time period of 3 days. Peak moment at high and low velocities of knee extensors was consistently the most reliable parameter over a 3 day period. It is concluded that isokinetic parameters can be reproducibly measured in a combined session of knee, shoulder and trunk movements in healthy male subjects over a 3-day time period.

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