Concentric and eccentric isokinetic knee extension: A reproducibility study using the IsoMed 2000-dynamometer

Dirnberger, Johannes; Kösters, Alexander; Müller, Erich

doi:10.3233/ies-2012-0437

Cited by 31 publications

(35 citation statements)

References 18 publications

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“…However, former studies on the topic of reproducibility for SJ measurements revealed similar results with eccentric measurements showing weaker reproducibility than concentric measurements [3][4][5][6][7][8]27], often combined with a clear systematic improvement in measurement values over testing sessions [3][4][5][6]. Regarding reproducibility for MJ measurements, only Müller et al [14] included eccentric testing.…”

Section: Discussionmentioning

confidence: 83%

“…Former studies attributed the IsoMed 2000-system high reproducibility in measuring SJ maximum leg Table 4 Relative (ICC) and absolute (SEM) reproducibility statistics for test-retest comparison of Peak Force (N) measurements ICC (2,1) 95% CI SEM (N ) T1-T2 T2-T3 T1-T2 T2-T3 T1-T2 T2-T3 CON strength performance in physically active subjects [4,9]. This was the first study focusing on corresponding MJ assessments.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10]). However, there is very little literature available about the reproducibility of multi-joint (MJ) leg strength testing.…”

Section: Introductionmentioning

confidence: 99%

“…Existing reproducibility studies using this device were limited to SJ maximum knee strength measurements [4,9]. However, no single report on the reproducibility of the IsoMed 2000-system in measuring MJ leg strength has been published, although several studies have already used this device for corresponding MJ performance diagnosis [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Reproducibility of concentric and eccentric isokinetic multi-joint leg extension measurements using the IsoMed 2000-system

Dirnberger

Huber

Hoop

et al. 2013

IES

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BACKGROUND: Several investigations have reported reproducibility for isokinetic single-joint (SJ) knee strength measurements. However, to date, only a few studies have concentrated on multi-joint (MJ) leg strength measurements. OBJECTIVE: This study is the first to investigate reproducibility for MJ leg strength measurements using the IsoMed 2000system, which recently was introduced into the market. METHODS: Peak Force (PF) of forty-one healthy male subjects (mean age: 24.4 years) performing concentric and eccentric MJ leg extension at standardized mean knee-joint angular velocities 40 and 80 • /s (i.e. individual linear foot velocities of 0.12-0.19 and 0.24-0.38 m/s, respectively) was measured in three identical sessions (T1-T3), separated by 10-14 days. Repeated measures analysis of variance (ANOVA) was applied for detection of systematic errors over sessions. Reproducibility was calculated between consecutive pairs of sessions (T1-T2; T2-T3) using intra-class correlation coefficients (ICC 2,1) and standard error of measurement (SEM). RESULTS: Significant increases in mean measurement values of ≈ 2-4% from T1 to T2/T3 could be seen for concentric measurements at 40 • /s and overall eccentric measurements. Reproducibility calculations revealed ICC-values of 0.823-0.956 and 0.911-0.978 with corresponding measures of SEM of 72. 1-175.3 and 49.3-125.3 N for T1-T2 and T2-T3, respectively. CONCLUSIONS: Moderate to high reproducibility was shown for the IsoMed 2000-system in measuring PF during concentric and eccentric isokinetic leg extension. However, as data indicate the presence of an initial practice-based improvement, we recommend the consideration of a familiarisation session in practice.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10]). However, there is very little literature available about the reproducibility of multi-joint (MJ) leg strength testing.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reproducibility of concentric and eccentric isokinetic multi-joint leg extension measurements using the IsoMed 2000-system

Dirnberger

Huber

Hoop

et al. 2013

IES

Self Cite

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“…So kam es erst kürzlich zur Markteinführung des IsoMed 2000 (D&R Ferstl GmbH, Hemau, D). Während bereits einzelne Studien zur Reliabi-lität von Messungen der Maximalkraft am IsoMed 2000 vorliegen [10,11,22], gibt es bislang keine Studien zur Reliabilität von Messungen der KAD.…”

Section: Sportverl Sportschaden 2012; 26unclassified

Absolute und relative Kraftausdauer der Kniebeuge- und -streckmuskulatur: eine Reliabilitätsstudie unter Verwendung des IsoMed 2000-Dynamometers

Dirnberger¹,

Wiesinger²,

Stöggl³

et al. 2012

Sportverletz Sportschaden

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In general, for extension measurements concerning KADabs and - in an weakened form - KADrel high ICC -values of 0.76-0.89 combined with clinically acceptable values of SEM% of 1.2-5.9 % could be found. For flexion measurements this only applies to KADabs, whereas results for KADrel turned out to be clearly weaker with ICC- and SEM% values of 0.42-0.62 and 9.6-17.7 % and leave considerable doubts on the clinical usefulness. However, if there should be after all a need to measure KADrel for flexion, it is - in view of the stronger reliability results - recommended (i) to concentrate on the calculation of KADrelB, (ii) to use the parameter Work and - in view of considerable familiariszation and learning effects of ≈10 % - (iii) to include a familiarisation period that extends exceeds the familiarisation session conducted in the present study.

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The Use of Dynamometry for Lower Limb Strength Assessment in Female Team Sport Athletes: A Scoping Review

Jenner,

Nottle,

Walters

et al. 2024

J. of SCI. IN SPORT AND EXERCISE

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Concentric and eccentric isokinetic knee extension: A reproducibility study using the IsoMed 2000-dynamometer

Cited by 31 publications

References 18 publications

Reproducibility of concentric and eccentric isokinetic multi-joint leg extension measurements using the IsoMed 2000-system

Reproducibility of concentric and eccentric isokinetic multi-joint leg extension measurements using the IsoMed 2000-system

Absolute und relative Kraftausdauer der Kniebeuge- und -streckmuskulatur: eine Reliabilitätsstudie unter Verwendung des IsoMed 2000-Dynamometers

The Use of Dynamometry for Lower Limb Strength Assessment in Female Team Sport Athletes: A Scoping Review

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