A new device to measure isometric strength in upper limbs: comparison between dominant and non-dominant limbs*

Cortez, Paulo José Oliveira; Tomazini, José Elias; Valenti, Vítor Engrácia; Correa, Jose Rubens; Valenti, Erica E; Abreu, Luíz Carlos de

doi:10.1590/s1807-59322011000200028

Cited by 8 publications

(4 citation statements)

References 29 publications

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“…Three such maximum voluntary contractions (MVC) were conducted. There was a break period of at least 30 seconds between each MVC trial [45,46,47]. The average value of the three readings was calculated [27].…”

Section: Plos Onementioning

confidence: 99%

Adaptive robot mediated upper limb training using electromyogram-based muscle fatigue indicators

2020

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Studies on improving the adaptability of upper limb rehabilitation training do not often consider the implications of muscle fatigue sufficiently. In this study, electromyogram features were used as fatigue indicators in the context of human-robot interaction. They were utilised for auto-adaptation of the task difficulty, which resulted in a prolonged training interaction. The electromyogram data was collected from three gross-muscles of the upper limb in 30 healthy participants. The experiment followed a protocol for increasing the muscle strength by progressive strength training, that was an implementation of a known method in sports science for muscle training, in a new domain of robotic adaptation in muscle training. The study also compared how the participants in three experimental conditions perceived the change in task difficulty levels. One task benefitted from robotic adaptation (Intervention group) where the robot adjusted the task difficulty. The other two tasks were control groups 1 and 2. There was no difficulty adjustment at all in Control 1 group and the difficulty was adjusted manually in Control 2 group. The results indicated that the participants could perform a prolonged progressive strength training exercise with more repetitions with the help of a fatigue-based robotic adaptation, compared to the training interactions, which were based on manual/no adaptation. This study showed that it is possible to alter the level of the challenge using fatigue indicators, and thus, increase the interaction time. The results of the study are expected to be extended to stroke patients in the future by utilising the potential for adapting the training difficulty according to the patient's muscular state, and also to have a large number repetitions in a robot-assisted training environment.

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Section: Plos Onementioning

confidence: 99%

Adaptive robot mediated upper limb training using electromyogram-based muscle fatigue indicators

2020

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“…It is possible that the influence of dominance on scapular muscle strength could be more pronounced in healthy individuals that routinely perform higher levels of shoulder activity. For example, in a general population of healthy individuals, it has been demonstrated that there are no differences in shoulder rotation strength when comparing the dominant to non-dominant limb [18][19][20]34]. On the contrary, a number of studies looking at specific athletic populations have found increased shoulder and scapular muscle strength for the dominant compared to the non-dominant arms [17,21,22,32,34].…”

Section: Strength With a Hhdmentioning

confidence: 99%

“…The dominant upper extremity has been found to be stronger during grip and elbow strength testing in a healthy population [16,17]. More closely related to the scapula, multiple studies have found that arm dominance does not affect shoulder strength or strength ratios in several planes of motion [18][19][20]. Alternatively, two studies found increased shoulder external-internal rotation isokinetic strength ratios in the dominant arm [21,22].…”

Section: Introductionmentioning

confidence: 99%

Arm dominance does not influence measures of scapular muscle strength and endurance in healthy individuals

Day

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Nitz

et al. 2015

PPR

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BACKGROUND PURPOSE: Scapular muscle performance is potentially influenced by arm dominance. The purpose of this study was to investigate the effect of arm dominance on clinical measures of scapulohumeral muscle strength and endurance. METHODS: Thirty-two healthy individuals between the ages of 30 and 65 years were recruited to participate. Scapular muscle strength of the upper trapezius (UT), middle trapezius (MT), lower trapezius (LT), and serratus anterior (SA) were recorded with a hand held dynamometer. One scapulohumeral isometric muscle endurance task was performed in prone. The order of testing (strength and endurance) was randomized for each individual. Dominant to non-dominant strength and endurance measures were compared with paired t-tests. RESULTS: Arm dominance was significantly higher for UT strength (p < 0.001) and endurance (p = 0.015). However, the differences between the dominant and non-dominant limbs were not beyond minimal detectable change values. CONCLUSION: It does not appear that scapulohumeral muscle strength and endurance is clinically different for the dominant and non-dominant limbs in a middle age healthy population.

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“…Furthermore, atrophy of these muscles alerts clinicians to medical diseases such as leprosy, poliomyelitis, Guillain–Barre syndrome, amyotrophic lateral sclerosis, rheumatoid arthritis, hand-arm vibration syndrome, and diabetes (Videler, Beelen, Aufdemkampe, de Groot, & Van Leemputte, 2002; Vinci, Esposito, Perelli, Antenor, & Thomas, 2003). A few researchers have reported that increased IHMS improves the functional status of the patient and recommended that the method/device used for evaluation of IHMS should be accurate and reliable (Cortez et al, 2011; Hsu, Tang, & Jan, 2000). In clinical practice, IHMS is frequently assessed by the Medical Research Council (MRC) scale, Intrins-o-meter, and Rotterdam Intrinsic Hand Myometer (RIHM; Pataky, Savescu, Latash, & Zatsiorsky, 2007; Xu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

New Device for Intrinsic Hand Muscle Strength Measurement: An Alternative to Strain Gauge Handheld Dynamometer

et al. 2017

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An accurate measurement of intrinsic hand muscle strength (IHMS) is required by clinicians for effective clinical decision-making, diagnosis of certain diseases, and evaluation of the outcome of treatment. In practice, the clinicians use Intrins-o-meter and Rotterdam Intrinsic Hand Myometer for IHMS measurement. These are quite bulky, expensive, and possess poor interobserver reliability (37-52%) and sensitivity. The purpose of this study was to develop an alternative lightweight, accurate, cost-effective force measurement device with a simple electronic circuit and test its suitability for IHMS measurement. The device was constructed with ketjenblack/deproteinized natural rubber sensor, 1-MΩ potential divider, and Arduino Uno through the custom-written software. Then, the device was calibrated and tested for accuracy and repeatability within the force range of finger muscles (100 N). The 95% limit of agreement in accuracy from -1.95 N to 2.06 N for 10 to 100 N applied load and repeatability coefficient of ±1.91 N or 6.2% was achieved. Furthermore, the expenditure for the device construction was around US$ 53. For a practical demonstration, the device was tested among 16 participants for isometric strength measurement of the ulnar abductor and dorsal interossei. The results revealed that the performance of the device was suitable for IHMS measurement.

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A new device to measure isometric strength in upper limbs: comparison between dominant and non-dominant limbs*

Cited by 8 publications

References 29 publications

Adaptive robot mediated upper limb training using electromyogram-based muscle fatigue indicators

Adaptive robot mediated upper limb training using electromyogram-based muscle fatigue indicators

Arm dominance does not influence measures of scapular muscle strength and endurance in healthy individuals

New Device for Intrinsic Hand Muscle Strength Measurement: An Alternative to Strain Gauge Handheld Dynamometer

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