Reproducibility of shoulder short range of motion in isokinetic and isometric strength testing

Hadžić, Vedran; Uršej, Eva; Kalc, Miloš; Dervišević, Edvin

doi:10.1016/j.jesf.2012.10.005

Cited by 20 publications

(21 citation statements)

References 28 publications

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“…Besides high ICCs, a measurement tool should exhibit small measurement errors and be able to identify real changes in the group and in single individuals [37]. The absolute reliability analysis performed in this study corroborates the good relative reliability of the inertial sensor-based iTUG metrics.…”

Section: Wüest Et Al Sensor-based Itug Reliability and Validitysupporting

confidence: 75%

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

et al. 2016

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Abstract-The instrumented Timed " Up and Go" test (iTUG) has the potential for playing an important role in providing clinically useful information regarding an individual's balance and mobility that cannot be derived from the original singleoutcome Timed "Up and Go" test protocol. The purpose of this study was to determine the reliability and validity of the iTUG using body-fixed inertial sensors in people affected by stroke. For test-retest reliability analysis, 14 individuals with stroke and 25 nondisabled elderly patients were assessed. For validity analysis, an age-matched comparison of 12 patients with stroke and 12 nondisabled controls was performed. Out of the 14 computed iTUG metrics, the majority showed excellent testretest reliability expressed by high intraclass correlation coefficients (range 0.431-0.994) together with low standard error of measurement and smallest detectable difference values. BlandAltman plots demonstrated good agreement between two repeated measurements. Significant differences between patients with stroke and nondisabled controls were found in 9 of 14 iTUG parameters analyzed. Consequently, these results warrant the future application of the inertial sensor-based iTUG for the assessment of physical deficits poststroke in longitudinal study designs.

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Section: Wüest Et Al Sensor-based Itug Reliability and Validitysupporting

confidence: 75%

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

et al. 2016

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“…All assessments were done seated. Finally, for IR strength tests at 90°, the currently presented results are in accordance with Forthomme (22), who used a Cybex Norm isokinetic dynamometer, and Hadzic (20), who used a REV 9000. Based on ICC analysis of this study, IR peak torque assessments can be done at either 40°or 90°of arm elevation, but ER torque assessments have higher relative reliability if performed at 90°.…”

Section: Discussionsupporting

confidence: 84%

Reliability of Shoulder Rotators Isometric Strength Test using a Novel Pulley Electromechanical Dynamometer. Influence of the Assessment Position

et al. 2018

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Background: The shoulder complex, because of its relatively extensive freedom of motion, offers a great variety of testing positions and articular planes for strength examination. Despite this, reliability of results are not clearly addressed. A novel pulley electromechanical dynamometer (FED) (functional electronic dynamometer) could be an alternative in strength assessment, however, the relative and absolute reliability have not been reported in the literature. Objectives: To report the results of shoulder internal (IR) and rotators (ER) peak torque reliability in two assessment positions by FED in asymptomatic subjects. Methods: Fifty-two healthy college students were included and tested twice within a two week period. In a supine position, the subjects randomly performed four isometric strength tests (i.e. IR at 40°, IR at 90°, ER at 40°, and ER at 90°of shoulder abduction). Results: The intra-class correlation coefficients (ICC) for relative reliability at 90°were 0.96 (0.94 -0.98) for IR and 0.94 (0.90 -0.96) for ER. ICC at 40°were 0.89 (0.80 -0.94) for IR and 0.97 (0.94 -0.98) for ER. Absolute reliability expressed as standard error of measurement compared to the mean (SEM%) and 95% confidence interval (CI) of minimal detectable change percentage (MDC%) at 90°w ere 8.8% (-20.8, 28.4%) and 11.4% (-28.0, 35.2%) for ER. MDC% at 40°were 12.6% (-35.5, 34.8%) for IR and 18.1% (-28.1, 35, 2%) for ER. Conclusions: Isometric strength testing protocol using FED showed an excellent reproducibility and can be safely used in clinical settings to monitor the strength changes in a group of individuals or in a single individual.

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“…The tests were performed using the dynamometer system REV-9000 (Technogym, Gambettola, Italy). Hadzic et al 20 proved the excellent test-retest reliability and validity of the shoulder internal and external rotation measurements using an isokinetic dynamometer REV 9000 (Technogym SpA, Gambettola, Forli, Italy) for concentric and isometric peak torque values in the short range of movement. The isokinetic dynamometer was calibrated according to manufacturer's specifications and checked before to testing of every participant.…”

Section: Methodsmentioning

confidence: 99%

Shoulder external/internal rotation peak torques ratio side-asymmetry, mean work and power ratios balance worsening due to different fatigue resistance of the rotator muscles in male handball players

Pontaga

2019

Muscle Ligaments and Tendons J

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Introduction: Fatigue could worsen shoulder cuff rotator balance if fatigue of the external rotation (ER) could appear faster in comparison with the internal rotation (IR). The shoulder rotation peak torques (τmax) side-asymmetry and muscle endurance effect on the mean work (W), mean power (P) and their ratio of ER/IR in handball players was investigated. Methods: Eighteen semi-professional male handball players participated. The tests were performed using an isokinetic dynamometer by the shoulder isokinetic internal-external rotation movements at angular velocities of 60°/s, 240°/s via concentric contractions. The W, P were determined and their ratios of the ER/IR were calculated for the first ten and last ten repetitions of the movements at 240°/s. Results: Muscle side asymmetry in Tmax, W, P was not observed at 240°/s. The W, P of the ER and ratios of the ER/IR (WER/WIR=0.76 (dominant D), 0.74 (non-dominant N) arm; PER/PIR=0.68 D, 0.70 N) in the last ten repetitions were significantly lower than those (WER/WIR=0.80 D, 0.79 N; PER/PIR=0.78 D, 0.77 N) in the first ten movements. Conclusion: Fatigue resistance of the ER was lower than that of the IR. Therefore, the ER/IR ratios of W, P decrease due to repeated rotation movements. Level of evidence: IIIa.

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Reproducibility of shoulder short range of motion in isokinetic and isometric strength testing

Cited by 20 publications

References 28 publications

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

Reliability of Shoulder Rotators Isometric Strength Test using a Novel Pulley Electromechanical Dynamometer. Influence of the Assessment Position

Shoulder external/internal rotation peak torques ratio side-asymmetry, mean work and power ratios balance worsening due to different fatigue resistance of the rotator muscles in male handball players

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