Stiffness and passive peak force changes at the ankle joint: the effect of different joint angular velocities

McNair, Peter; Hewson, David J.; Dombroski, Erik; Stanley, Stephen N.

doi:10.1016/s0268-0033(02)00062-1

Cited by 60 publications

(85 citation statements)

References 10 publications

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“…Therefore, the accuracy of passive torque measurements provided by computerized dynamometers has yet to be established. In addition, some authors have studied the effects of repeated stretching protocols on passive torque [8,10,11,20,21]. Since some significant strain could be present in the dynamometer during a stretching protocol, the dynamometer might contribute to the observed changes, and it is necessary to examine this possibility.…”

Section: Introductionmentioning

confidence: 99%

Accuracy of Biodex system 3 pro computerized dynamometer in passive mode

Nordez

Casari

Cornu

2008

Medical Engineering & Physics

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A specific experimental design has been developed to determine the accuracy of the Biodex system 3 pro dynamometer in passive mode. Five cyclic stretching repetitions were imposed to an elastic rubber band at different velocities using the dynamometer, and the torque produced was measured using both the dynamometer and external force and position sensors. Velocity patterns performed by the dynamometer were also characterized and our results show that these patterns were reliable (ICC = 1.00). The torque measured with the dynamometer and the sensors were reliable (ICC = 1.00), although significant differences were observed between both methods. However, the measured torque standard error was velocity independent and was lower than 0.33 N m. Moreover, regressions between the two torque measurements were close to the axes-bisector (r = 1.00, slope: 1.01 ± 0.01, y-intercept: −0.36 ± 0.22 N m). Finally, our results showed decreases in torque during the five cycles, but these decreases were not due to the dynamometer. It can be concluded that the dynamometer performed valid torque measurements in passive mode, and was an accurate tool to determine passive mechanical properties of the musculo-articular system. However, some discrepancies between the programmed and the measured speed profiles have been observed when approaching the speed limit of the system.

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Section: Introductionmentioning

confidence: 99%

Accuracy of Biodex system 3 pro computerized dynamometer in passive mode

Nordez

Casari

Cornu

2008

Medical Engineering & Physics

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“…Previous research 5,[7][8][9] has shown that other methods of muscle-stiffness measurement (e.g., damped oscillatory and passive lengthtension) are sensitive to levels of muscle force output. Sex differences have also been observed using these other measures of stiffness.…”

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confidence: 99%

Reliability, Validity, and Precision of a Handheld Myometer for Assessing in Vivo Muscle Stiffness

Zinder

Padua²

2011

Journal of Sport Rehabilitation

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“…Second, cyclic passive movement was found to decrease muscle stiffness, especially with increased movement velocity [26,28]. According to Loram et al [19], proprioception of movement is mainly sensed by muscle spindles registering changes in fascicle length.…”

Section: Discussionmentioning

confidence: 99%

“…This improvement was observed in active repositioning and kinesthetic evaluation of the test limb. According to literature, the effects of rapid RPM on proprioceptive improvement suggested a possible promising treatment for joint proprioception [8,26,28]. In addition, research revealed that proprioception is the main predictor of balance in the elderly population [2,15,22,31].…”

Section: Introductionmentioning

confidence: 99%

Rapid repetitive passive movement promotes knee proprioception in the elderly

Lin

Cheng

et al. 2013

Eur Rev Aging Phys Act

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Joint proprioception plays an important role in the generation of coordinated movements, maintenance of normal body posture, body conditioning, motor learning, and relearning. Previous studies have demonstrated that proprioceptive function of the elderly can be enhanced via specific exercises; however, not all of the elderly can actively and safely participate in physical activities. The purpose of this study was to evaluate the effects of rapid repetitive passive movement in an average velocity of 90°/s on knee proprioception in the elderly. A repeated-measure design was employed. Two age groups (12 young/12 elderly) were intervened with repetitive passive movements of 60 repetitions to the knee joint via two machines (isokinetic dynamometer/selfdesigned machine) in separate days. Changes in proprioception were evaluated via joint active repositioning and kinesthesia, both before and after the intervention. The results revealed that all subjects demonstrated good test-retest reliabilities on proprioceptive measurements. For the active repositioning and kinesthesia, significant statistical main effects were found for group and time, but not for machine. No statistical interactions were revealed. Despite of age-related proprioceptive declines, elderly subjects could benefit from rapid repetitive passive movements. This indicates that repetitive passive movement may be an alternative to physical activity for those who are home-bound, in a sedentary lifestyle, or with other health conditions that may limit their abilities to actively maintain or strengthen joint proprioception.

show abstract

Stiffness and passive peak force changes at the ankle joint: the effect of different joint angular velocities

Cited by 60 publications

References 10 publications

Accuracy of Biodex system 3 pro computerized dynamometer in passive mode

Accuracy of Biodex system 3 pro computerized dynamometer in passive mode

Reliability, Validity, and Precision of a Handheld Myometer for Assessing in Vivo Muscle Stiffness

Rapid repetitive passive movement promotes knee proprioception in the elderly

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