The Relationship between 30-m Sprint Running Time and Muscle Cross-sectional Areas of the Psoas Major and Lower Limb Muscles in Male College Short and Middle Distance Runners

Abstract Background Limb-girdle muscular dystrophies (LGMDs) are a clinically and genetically heterogeneous group of disorders characterized by progressive muscle weakness and degenerative muscle changes. Studies have shown that ultrasound can be useful both for diagnosis and follow-up of LGMDs patients. Objectives This study aims to measure the sensitivity and the specificity of muscle ultrasound in assessment of suspected limb girdle muscular dystrophy patients. Subjects and Methods This cross-sectional descriptive study was conducted on Fifty-five patients with suspected LGMD from neuromuscular unit, myology clinic, Ain Shams University hospitals and eight healthy subjects. Age was above 2 years. Both sexes were included in the study. They underwent real-time B-mode ultrasonography performed with using Logiq p9 General Electric ultrasound machine and General Electric 7-11.5 MHZ linear array ultrasound probe. All ultrasound images have been obtained and scored by a single examiner and muscle echo intensity was visually graded semiquantitative according to Heckmatt's scale. The examiner was blinded to the muscle biopsy results and clinical evaluations. Results Statistical analysis revealed that the diagnostic performance of muscle US (Heckmatt’s score) in LGMD is most sensitive when calculated in all examined upper limb and lower limb muscles, followed by lower limb muscles alone. US of upper limb was found to be the least sensitive. Conclusions Muscle ultrasound is a practical and reproducible and valid tool that can be used in assessment of suspected LGMD patients.

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Latent trigger points in lower limb muscles in sedentary and athletic subjects. A cross-sectional study on prevalence

Physiotherapy ◽

10.1016/j.physio.2016.10.257 ◽

2016 ◽

Vol 102 ◽

pp. e209-e210

Author(s):

A. Gomez-Conesa ◽

J.C. Zuil-Escobar ◽

C.B. Martínez-Cepa ◽

J.A. Martín-Urrialde

Keyword(s):

Lower Limb ◽

Trigger Points ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Lower Limb Muscles ◽

Limb Muscles

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Effect of Garment Pressure on Lower Limb Muscle Activity during Running

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.175-176.832 ◽

2011 ◽

Vol 175-176 ◽

pp. 832-836 ◽

Cited By ~ 1

Author(s):

Ya Ning Li ◽

A Ming Lu ◽

Xiao Qun Dai ◽

Jin Ao Chen ◽

Xiao Wen Zhao

Keyword(s):

Lower Limb ◽

Muscle Activity ◽

Blood Circulation ◽

Limb Muscle ◽

Sports Performance ◽

Healthy Male ◽

Lower Limb Muscles ◽

Male College ◽

Limb Muscles ◽

The Right

Recently, it has been reported that suitable garment pressure contributes to accelerating human blood circulation, improving sports performance and alleviating sports fatigue. In this study, effect of pressure exerted by knee-high gradient compression socks (GCS) on the lower limb muscles was investigated. Two healthy male college students volunteered to participate in this study. They were asked to run on a treadmill at a speed of 10 km/h with a GCS worn on one leg and a usual sports sock worn on the other leg until being tired out. During running, the surface electromyography (sEMG) of two lower limb muscles —— gastrocnemius medialis of the right leg (R-GM) and the left leg (L-GM) was recorded simultaneously. It was found that: pressure exerted on the lower limb by GCS gradually decreased from ankle to below-knee; GCS pressure helped to reduce muscle oscillation; wearing GCS seemed to help to reduce muscle fatigue during running.

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