Gait deviations in children with Duchenne Muscular Dystrophy can be directly attributed to muscle weakness in two lower limb muscle groups

This research aimed to assess the correlation between isometric muscle strength of the lower limb and motor skills. This is a cross sectional study performed among volunteer nursing home residents included in the SENIOR (Sample of Elderly Nursing home Individuals: an Observational Research) cohort. The present analysis focused on isometric muscle strength of 6 lower limb muscle groups (i.e. knee extensors, knee flexors, hip abductors, hip extensors, ankle flexors and ankle extensors), assessed using a validated hand-held dynamometer (i.e. the MicroFET2 device), and motor skills evaluated using the Tinetti test, the Timed Up and Go test, the Short Physical Performance Battery test (SPPB) and the walking speed. The relationship between all these parameters was tested by means of a multiple correlation, adjusted on age, sex and body mass index. 450 nursing home residents (69.8% of women) with a mean age of 83.1±9.4 years were included in this study. Our results showed a significant inverse correlation between lower limb muscle strength and the time required to perform the TUG test or gait speed, except for ankle flexors and ankle extensors. The relationship between the Tinetti test or the SPPB score, and lower limb muscle strength was significant, except for ankle flexors and ankle extensors. In conclusion, a positive association between lower limb muscle strength of the four main muscle groups and motor skills of the elderly nursing residents was found in this research. Therefore, special attention should be given to these muscle groups during rehabilitation programs.

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Quantifying Lower Limb Muscle Stiffness as Ambulation Function Declines in Duchenne Muscular Dystrophy with Acoustic Radiation Force Impulse Shear Wave Elastography

Ultrasound in Medicine & Biology ◽

10.1016/j.ultrasmedbio.2021.06.008 ◽

2021 ◽

Author(s):

Chia-Wei Lin ◽

Po-Hsiang Tsui ◽

Chun-Hao Lu ◽

Yi-Hsuan Hung ◽

Meng-Ru Tsai ◽

...

Keyword(s):

Duchenne Muscular Dystrophy ◽

Lower Limb ◽

Acoustic Radiation ◽

Shear Wave Elastography ◽

Radiation Force ◽

Muscle Stiffness ◽

Acoustic Radiation Force ◽

Acoustic Radiation Force Impulse ◽

Lower Limb Muscle ◽

Limb Muscle

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The influence of static stretching of specific lower limb muscle groups on the jump height parameter of volleyball players aged 16-17: a pilot study

Advances in Rehabilitation ◽

10.5114/areh.2021.102315 ◽

2021 ◽

Author(s):

Agnieszka Beata Ćwirlej-Sozańska ◽

Olaf Wójcik ◽

Jan Wójcik ◽

Marzena Mól ◽

Tomasz Kolasa

Keyword(s):

Pilot Study ◽

Lower Limb ◽

Lower Limb Muscle ◽

Jump Height ◽

Static Stretching ◽

Limb Muscle ◽

Volleyball Players ◽

Muscle Groups

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Reliability and validity of hand-held dynamometry for assessing lower limb muscle strength

Isokinetics and Exercise Science ◽

10.3233/ies-210168 ◽

2021 ◽

pp. 1-10

Author(s):

Tjaša Lipovšek ◽

Alan Kacin ◽

Urška Puh

Keyword(s):

Muscle Strength ◽

Lower Limb ◽

Reliability And Validity ◽

Knee Extensors ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Rater Reliability ◽

Extensor Muscles ◽

Good For ◽

Muscle Groups

BACKGROUND: Hand-held dynamometry (HHD) is used to assess muscle strength in various patient populations, but many variations in protocols exist. OBJECTIVE: First, to systematically develop a protocol of HHD for all lower limb muscle groups and evaluate intra-rater reliability; second, to validate HHD with fixed dynamometry for the knee flexor and extensor muscles. METHODS: Thirty healthy young adults (women: men – 15:15) participated in two testing sessions. HHD of 12 lower limb muscle groups was performed in both sessions, while fixed dynamometry of knee muscle groups was performed only in the second session. RESULTS: The intra-rater reliability of HHD was good for five muscle groups and excellent for seven muscle groups (ICC3, k= 0.80–0.96). The criterion validity of HHD ranged from very good to excellent for the knee flexors (r= 0.77–0.89) and from good to very good for the knee extensors (r= 0.65–0.78). However, peak moment values for the knee extensor muscles were underestimated by 32% (p< 0.001). CONCLUSIONS: The proposed HHD protocol provides reliable and valid measurements of lower limb muscle isometric strength in healthy adults, which may also be used to test patients with mild muscle strength deficits. However, possible underestimation of absolute strength must be considered when interpreting the results of knee extensors or other large muscles.

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Lower Limb Muscle Weakness Predicts Use of a Multiple- Versus Single-Step Strategy to Recover From Forward Loss of Balance in Older Adults

The Journals of Gerontology Series A ◽

10.1093/gerona/gls149 ◽

2012 ◽

Vol 67 (11) ◽

pp. 1246-1252 ◽

Cited By ~ 46

Author(s):

C. P. Carty ◽

R. S. Barrett ◽

N. J. Cronin ◽

G. A. Lichtwark ◽

P. M. Mills

Keyword(s):

Older Adults ◽

Muscle Weakness ◽

Lower Limb ◽

Single Step ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Loss Of Balance

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Stroke Sarcopenia Patients Cause Weakness and Atrophy in the Knee and Ankle Joints

Current Developments in Nutrition ◽

10.1093/cdn/nzaa043_065 ◽

2020 ◽

Vol 4 (Supplement_2) ◽

pp. 214-214

Author(s):

Yamanoi Jyunya

Keyword(s):

Knee Joint ◽

Ankle Joint ◽

Muscle Weakness ◽

Muscle Atrophy ◽

Lower Limb ◽

Chronic Stroke ◽

Triceps Surae ◽

Stroke Survivors ◽

Lower Limb Muscle ◽

Limb Muscle

Abstract Objectives Chronic stroke survivors tend to be inactive, often with sarcopenia, and have decreased physical function and activities of daily living. Muscle atrophy and weakness differ between sarcopenia patients and stroke patients. Therefore, it is difficult to evaluate physiotherapy and intervention for sarcopenic patients with stroke. The purpose of this study was to identify muscles that cause muscle weakness and muscle atrophy in stroke sarcopenia patients. Methods The subjects were 117 chronic stroke survivors who were 65 years or older. Subjects were determined using the criteria of the Asian Working Group on Sarcopenia in 2019 to determine the presence of sarcopenia and were classified into sarcopenia group (SG, n = 60) and non sarcopenia group (nSG, n = 57). Atrophy assessments obtained unaffected lower limb muscle thickness (iliopsoas, gluteus maximus, gluteus medius, hamstrings, quadriceps femoris, tibialis anterior, triceps surae) using B-mode of transverse ultrasound imaging. Strength assessments obtained unaffected lower limb muscle strength (flexion, extension, abduction, adduction, external rotation and internal rotation of hip joint, flexion and extension of knee joint, planter flexion and dorsiflexion of ankle joint) using handheld dynamometer. We conducted a Student's t-test to compare the two groups. A P-value of <0.05 was considered to show statistical significance for all analyses. When the significance level is less than 0.05, the power is also calculated, and it is considered that the significant difference can be secured when P < 0.05 and power >0.8. We conducted with the approval of the ethics committee of Aichi Saiseikai Rehabilitation Hospital (201,908). Results SG had muscle atrophy in all muscles compared to nSG (P < 0.05, power >0.8). SG had muscle weakness in all joint direction compared to nSG (P < 0.05, power >0.8). In particular, extension of knee joint and planter flexion of ankle joint muscle weakness, quadriceps femoris and triceps surae muscle atrophy occurred (P < 0.01, power >0.8). Conclusions Assessment and intervention of skeletal muscle in stroke sarcopenia patients should focus on the knee joint and ankle joint. Funding Sources The authors declare no conflicts of interest associated with this manuscript.

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