scholarly journals Measurement of Muscle Thickness as Quantitative Muscle Evaluation for Adults With Severe Cerebral Palsy

2006 ◽  
Vol 86 (9) ◽  
pp. 1231-1239 ◽  
Author(s):  
Koji Ohata ◽  
Tadao Tsuboyama ◽  
Noriaki Ichihashi ◽  
Satosi Minami
Keyword(s):  
Cerebral Palsy ◽  
Muscle Strength ◽  
Functional Status ◽  
Motor Function ◽  
Ultrasound Imaging ◽  
Daily Activity ◽  
Muscle Thickness ◽  
Triceps Surae ◽  
Convenience Sample ◽  
Muscle Spasticity

Abstract Background and Purpose. The muscle strength of people with severe cerebral palsy (CP) is difficult to quantify because of cognitive and selective motor control problems. However, if muscle strength is related to muscle atrophy caused by activity limitation, quantitative morphological analysis such as analysis of muscle thickness (MTH), measured by ultrasound imaging, may be used to examine the muscle condition in daily use. The primary purpose of this investigation was to clarify the difference in MTH of several muscles by the motor functions used in daily activity in adults with CP with different levels of severity of involvement. The secondary purpose was to examine whether MTH is associated with age, body characteristics, and muscle spasticity. Subjects. Data were collected from a convenience sample of 25 adults with severe CP. Methods. The MTH of the biceps brachii (BB), quadriceps femoris (QF), triceps surae (TS), and longissimus (LO) muscles was measured with an ultrasound imaging device. The severity of the condition was classified with the Gross Motor Function Classification System (GMFCS), and functional status in sitting and standing was evaluated with a questionnaire administered to the staff assisting in the care of the subjects. Muscle spasticity was assessed with the Modified Ashworth Scale (MAS). Results. The MTH of the QF, LO, and TS showed significant differences according to the GMFCS level, and the MTH of the QF and LO differed significantly depending on functional status during activities of daily living. Age and body mass index showed no significant correlation with the MTH of any muscle. Body weight was correlated with the MTH of the BB and LO. The girth of the extremity was correlated only with the MTH of the BB. There was no relationship between MTH and MAS scores. Discussion and Conclusion. These results suggest that the MTH of the QF and LO differed significantly depending on the subjects' motor function during daily activity. The measurement of MTH may be an alternative method of quantitative muscle evaluation for people with severe CP for whom direct measurement of muscle strength is difficult. [Ohata K, Tsuboyama T, Ichihashi N, Minami S. Measurement of muscle thickness as quantitative muscle evaluation for adults with severe cerebral palsy. Phys Ther. 2006;86:1231–1239.]

Relationship between trunk muscle strength and trunk muscle mass and thickness using bioelectrical impedance analysis and ultrasound imaging

2021 ◽  
pp. 1-10
Author(s):  
Ryo Miyachi ◽  
Nana Koike ◽  
Suzu Kodama ◽  
Junya Miyazaki
Keyword(s):  
Muscle Strength ◽  
Muscle Mass ◽  
Ultrasound Imaging ◽  
Bioelectrical Impedance Analysis ◽  
Muscle Thickness ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Trunk Muscle ◽  
Trunk Muscles ◽  
Trunk Muscle Strength

BACKGROUND: Although trunk muscles are involved in many important functions, evaluating trunk muscle strength is not an easy task. If trunk muscle mass and thickness could be used as indicators of trunk muscle strength, the burden of measurement would be reduced, but the relationship between trunk muscle strength and trunk muscle mass and thickness has not been clarified. OBJECTIVE: The purpose of this study was to clarify the relationship between trunk muscle strength and trunk muscle mass by bioelectrical impedance analysis and trunk muscle thickness by ultrasound imaging in healthy adults. METHODS: One hundred and twenty-one healthy university students were included in this study. Trunk flexion/extension muscle strength and trunk muscle mass by bioelectrical impedance analysis, and trunk muscle thickness by ultrasound imaging were measured. RESULTS: Both trunk flexion strength and trunk extension strength were significantly correlated with trunk muscle mass and oblique and rectus abdominis muscle thickness. Multiple regression analysis showed that trunk extension muscle strength had an independent relationship with trunk muscle mass. CONCLUSIONS: This study demonstrated that trunk muscle mass or trunk muscle thickness can be used as an alternative means for evaluating trunk muscle strength, making the evaluation of trunk muscles less burdensome.

A DYNAMIC SEATING SYSTEM FOR CHILDREN WITH CEREBRAL PALSY

2009 ◽  
Vol 12 (01) ◽  
pp. 21-30 ◽  
Author(s):  
Michael E. Hahn ◽  
Sheri L. Simkins ◽  
Jacob K. Gardner ◽  
Gaurav Kaushik
Keyword(s):  
Cerebral Palsy ◽  
Range Of Motion ◽  
Motor Function ◽  
Control Group ◽  
Significant Group ◽  
Gross Motor ◽  
Gross Motor Function ◽  
Muscle Spasticity ◽  
Children With Cerebral Palsy ◽  
Dynamic Seating

The study's aim was to determine the initial effects of a dynamic seating system as a therapeutic intervention in children with cerebral palsy. A two-factor, repeated-measures design was used. Twelve children with neuromuscular dysfunction (mean age 6.0, SD 2.7 years) were included in the study, randomly assigned to an experimental or a control group. At study initiation the experimental group received a wheelchair with dynamic seating components that allows limited range of motion in the hip and knee, and the control group received a static setting wheelchair. Participants were evaluated for range of motion, muscle spasticity (Modified Ashworth Scale), motor function (Gross Motor Function Measure), and level of disability (Pediatric Evaluation of Disability Inventory) at study initiation, 3-months, and 6-months post intervention. Both groups improved in motor function over time, particularly in the categories of Sitting and Crawl/Kneel. Measures of disability improved in both groups for the categories of self-care, mobility, and social function. A larger, more homogeneous sample would likely show significant group differences in measures of muscle spasticity, gross motor function and disability.

scholarly journals Effects of long-term athletic training on muscle morphology and tendon stiffness in preadolescence: association with jump performance

2020 ◽  
Vol 120 (12) ◽  
pp. 2715-2727
Author(s):  
Nikolaos Pentidis ◽  
Falk Mersmann ◽  
Sebastian Bohm ◽  
Erasmia Giannakou ◽  
Nickos Aggelousis ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Achilles Tendon ◽  
Muscle Hypertrophy ◽  
Muscle Thickness ◽  
Pennation Angle ◽  
Triceps Surae ◽  
Plantar Flexors ◽  
Tendon Stiffness ◽  
Jumping Performance

Abstract Purpose Evidence on training-induced muscle hypertrophy during preadolescence is limited and inconsistent. Possible associations of muscle strength and tendon stiffness with jumping performance are also not investigated. We investigated the thickness and pennation angle of the gastrocnemius medialis muscle (GM), as indicators for potential muscle hypertrophy in preadolescent athletes. Further, we examined the association of triceps surae muscle–tendon properties with jumping performance. Methods Eleven untrained children (9 years) and 21 similar-aged artistic gymnastic athletes participated in the study. Muscle thickness and pennation angle of the GM were measured at rest and muscle strength of the plantar flexors and Achilles tendon stiffness during maximum isometric contractions. Jumping height in squat (SJ) and countermovement jumps (CMJ) was examined using a force plate. We evaluated the influence of normalised muscle strength and tendon stiffness on jumping performance with a linear regression model. Results Muscle thickness and pennation angle did not differ significantly between athletes and non-athletes. In athletes, muscle strength was greater by 25% and jumping heights by 36% (SJ) and 43% (CMJ), but Achilles tendon stiffness did not differ between the two groups. The significant predictor for both jump heights was tendon stiffness in athletes and normalised muscle strength for the CMJ height in non-athletes. Conclusion Long-term artistic gymnastics training during preadolescence seems to be associated with increased muscle strength and jumping performance but not with training-induced muscle hypertrophy or altered tendon stiffness in the plantar flexors. Athletes benefit more from tendon stiffness and non-athletes more from muscle strength for increased jumping performance.

scholarly journals Improved Walking Capacity and Muscle Strength After Functional Power-Training in Young Children With Cerebral Palsy

2017 ◽  
Vol 31 (9) ◽  
pp. 827-841 ◽  
Author(s):  
Liesbeth F. van Vulpen ◽  
Sonja de Groot ◽  
Eugene Rameckers ◽  
Jules G. Becher ◽  
Annet J. Dallmeijer
Keyword(s):  
Cerebral Palsy ◽  
Resistance Training ◽  
Muscle Strength ◽  
Usual Care ◽  
Motor Function ◽  
Training Period ◽  
Power Training ◽  
Walking Capacity ◽  
Children With Cerebral Palsy ◽  
Care Period

Background. Strength training programs for children with cerebral palsy (CP) showed inconclusive evidence for improving walking, despite improvements in strength. Recent studies have suggested that strength training with high movement velocity is more effective for improving walking than traditional resistance training. Objective. The purpose of this study was to evaluate the effect of functional high-velocity resistance training (power-training) to improve muscle strength and walking capacity of children with CP. Method. Twenty-two children with spastic CP participated (13 bilateral, Gross Motor Function Classification System [GMFCS] level I [n = 10] and II [n = 12], 7.5 years [SD 1.8, range 4-10 years]). Within-subjects changes in a 14-weeks usual care period were compared with changes in a 14-week functional power-training period (in groups, 3×/wk). Outcome measures were the muscle power sprint test (MPST), 1-minute walk test (1MWT), 10-m shuttle run test (SRT), gross motor function (GMFM-66), isometric strength of lower-limb muscles and dynamic ankle plantar flexor strength. Results. Changes during the training period were significantly larger than changes in the usual care period for all outcome measures ( P < .05). Large improvements were found during the training period for walking capacity (ΔMPST [mean]: 27.6 W [95%CI 15.84-39.46, 83% increase], Δ1MWT: 9.4 m [95% CI 4.17-14.68, 13%], ΔSRT: 4.2 [95%CI 2.57-5.83, 56%], ΔGMFM-66: 5.5 [95% CI 3.33-7.74, 7%]) and muscle strength (18%-128%), while outcomes remained stable in the usual care period. Conclusions. The results indicate that functional power-training is an effective training for improving walking capacity in young children with cerebral palsy.

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