The measurement of muscle strength in patients with peripheral neuromuscular disorders.

Wiles, C. M.; Karni, Y

doi:10.1136/jnnp.46.11.1006

Cited by 91 publications

(52 citation statements)

References 16 publications

(1 reference statement)

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“…27 Furthermore, the quadriceps strength recorded in this study cannot be considered subnormal because subjects with quadriceps strength below 160N and body weight >40 kg are considered to have subnormal strength. 28 This study confirms the extreme importance of quadriceps muscle strength for activities of daily living, including standing up, sitting down, and stair climbing.…”

Section: 13mentioning

confidence: 90%

The Effects of Aging on Muscle Strength and Functional Ability of Healthy Saudi Arabian Males

AlAbdulwahab

1999

Ann Saudi Med

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Background: Loss of muscle strength as a result of normal aging is reported to impair functional ability in various communities. The purpose of this study was to determine the age at which loss of muscle strength and functional ability begins, and to establish a preliminary baseline for the pattern of changes in muscle strength and functional ability of aging in adult healthy Saudi Arabian males. Subjects and Methods: A sample of 160 healthy Saudi Arabian males aged 20-89 years participated in this study. The subjects were divided into seven age groups, each representing a decade. Maximum isometric "make" strength of bilateral quadriceps muscles were measured using a hand-held dynamometer. Functional ability tests that included stair walking, timed-up-and-go and balance tests were also performed and timed using a digital stopwatch. Results: Muscle strength and functional ability remained unchanged in the 20-and 30-year-old age groups. Around the age of 40, muscle strength and functional ability began to gradually decline. Muscle strength of males in their twenties was 380±62N and 330±60N in the right (RT) and left (LT) quadriceps, respectively. A decline with aging is represented by 190±40N and 110±30N in the RT and LT quadriceps muscles, respectively, by the eighth decade of life. Stair-walking, timed up-and-go and balance tests in the second decade were 4±1 sec, 8±2 sec and 130±20 sec, respectively, against 15±4 sec, 26±7 sec and 15±5 sec in the eighth decade. One-way ANOVA test showed that muscle strength and functional ability differed (P<0.01) among decades, except between the second and third decades (P<0.31). Age, muscle strength and functional ability displayed a significant relationship (P<0.001). Conclusion: Loss of muscle strength and functional ability seem to begin in the fourth decade of life. The changes in muscle strength and functional ability have a significant relationship to aging. Clinically, these results may provide clinicians with a guide to the strength level of normal quadriceps and the functional ability of adult healthy Saudi Arabian males in relation to the normal aging process. Ann Saudi Med 1999; 19(3):211-215.

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Section: 13mentioning

confidence: 90%

The Effects of Aging on Muscle Strength and Functional Ability of Healthy Saudi Arabian Males

AlAbdulwahab

1999

Ann Saudi Med

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“…A variety of quantitative measures have been employed, some using strain gauges and others with hand-held myometers [15,17]. However, the first well-defined method to be used in clinical trials of motor neuron disease was developed by Munsat and Andres [16,[18][19][20][21].…”

Section: Quantitative Muscle Testingmentioning

confidence: 99%

“…In spinal cord-injured patients, use of a hand-held myometer was much more reliable than MMT testing [26]. In the clinic, quantitative strength measurements with a hand-held device has been useful in a variety of neuromuscular diseases [17,27]. In general, however, reproducibility was not as good for TQNE in most cases, and issues were raised about variability of both patient and evaluator positioning, as well as the fact that, for strong muscles, the strength of the evaluator might be less than the patient [21].…”

Section: Quantitative Muscle Testingmentioning

confidence: 99%

Strength Testing in Motor Neuron Diseases

Shefner

2017

Neurotherapeutics

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Loss of muscle strength is a cardinal feature of all motor neuron diseases. Functional loss over time, including respiratory dysfunction, inability to ambulate, loss of ability to perform activities of daily living, and others are due, in large part, to decline in strength. Thus, the accurate measurement of limb muscle strength is essential in therapeutic trials to best understand the impact of therapy on vital function. While qualitative strength measurements show declines over time, the lack of reproducibility and linearity of measurement make qualitative techniques inadequate. A variety of quantitative measures have been developed; all have both positive attributes and limitations. However, with careful training and reliability testing, quantitative measures have proven to be reliable and sensitive indicators of both disease progression and the impact of experimental therapy. Quantitative strength measurements have demonstrated potentially important therapeutic effects in both amyotrophic lateral sclerosis and spinobulbar muscular atrophy, and have been shown feasible in children with spinal muscular atrophy. The spectrum of both qualitative and quantitative strength measurements are reviewed and their utility examined in this review.

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“…However, this method requires the examiner to have sufficient strength to hold the HDD steady, which can be difficult when measuring isometric muscle strength of the lower limbs, especially when the subject is strong and the examiner weak. The limit of the manual resistance was reported to be from 220 to 294.2 N (30 kg) in previous studies [1][2][3][4][5][6] . Methods previously reported for fixing a HHD to overcome this problem and prevent the angle of the joint from changing include using a stick 7) , a steel support 8) , and a belt [9][10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Validity of Isometric Muscle Strength Measurements of the Lower Limbs Using a Hand-held Dynamometer and Belt: a Comparison with an Isokinetic Dynamometer

Katoh

Hiiragi

Uchida³

2011

J Phys Ther Sci

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Abstract.[Purpose] The aim of this study was to evaluate the validity of isometric muscle strength measurements of the lower limbs and hips made with a hand-held dynamometer and belt by comparing them with measurements obtained by an isokinetic dynamometer.[Subjects] The subjects were 24 healthy adults (12 men, 12 women) with a mean age of 20.4 years.[Method] Measurements were made with both instruments on the flexors, extensors, abductors, adductors, external rotators and internal rotators of the hip and flexors and extensors of the knee.[Results] Measurements obtained with the hand-held dynamometer and belt were significantly lower than those obtained with the isokinetic dynamometer. Pearson's correlation coefficients for the measurements made with the two instruments ranged from 0.52 to 0.88 for all muscle groups except the hip abductors which was 0.34. In the hip abductors, the coefficient was 0.65 when forces of 450 N and higher were excluded.[Conclusion] Isometric muscle strength measurements of the lower limbs and hips obtained with a hand-held dynamometer and belt are considered to be valid except for measurement of hip abduction of subjects with high muscle strength.

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The measurement of muscle strength in patients with peripheral neuromuscular disorders.

Cited by 91 publications

References 16 publications

The Effects of Aging on Muscle Strength and Functional Ability of Healthy Saudi Arabian Males

The Effects of Aging on Muscle Strength and Functional Ability of Healthy Saudi Arabian Males

Strength Testing in Motor Neuron Diseases

Validity of Isometric Muscle Strength Measurements of the Lower Limbs Using a Hand-held Dynamometer and Belt: a Comparison with an Isokinetic Dynamometer

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