A 45-year-old male noticed progressive weakness of the right lower limb with gait disturbance. Over the following months, motor deficits worsened, spreading to the right upper limb. Electromyography showed active denervation in the upper and lower limb muscles. A diagnosis of amyotrophic lateral sclerosis (ALS) was made. About 2 years after symptom onset, gradual improvement occurred. Cerebrosp...

Introduction: The study aimed to investigate the onset time and the electromyographic activity level of the selected lower limbs muscles in active and inactive aged women. Methods: in this case-control study, 28 aged women with a mean age of 61.07±0.88 were selected in two groups of inactive (15 people) and active (13 people). The electrical activity of the selected muscles of the lower l...

This study aimed to determine whether individuals with spastic diplegic cerebral palsy (SDCP) have deficits in anticipatory inhibition of postural muscle activity. Nine individuals with SDCP (SDCP group, 3 female and 6 male, 13-24 yr of age) and nine age- and sex-matched individuals without disability (control group) participated in this study. Participants stood on a force platform, which was ...

BACKGROUND Coactivation of agonist and antagonist lower limb muscles during gait stiffens joints and ensures stability. In patients with multiple sclerosis, coactivation of lower limb muscles might be a compensatory mechanism to cope with impairments of balance and gait. OBJECTIVE The aim of this study was to assess coactivation of agonist and antagonist muscles at the knee and ankle joints d...

The role of the biarticular muscles is a topic that has received considerable attention however their function is not well understood. In this paper, we argue that an analysis that is based upon considering the effect of the biarticular muscles on the segments that they span (rather than their effect on joint rotations) can be illuminating. We demonstrate that this understanding is predicated o...

1. Differences in the effect of age on structure-function relationships of limb muscles of mdx (dystrophin null) and control mice have not been resolved. We tested the hypotheses that, compared with limb muscles from age-matched control mice, limb muscles of 6- to 17-month-old mdx mice are larger but weaker, with lower normalised force and power, whereas those from 24- to 28-month-old mdx mice ...

The purpose of this study was to compare the effect of shoulder abduction angles, dominant and non-dominant arm and external loading on co-contraction ratio during arm abduction in scapular plane in overhead athletes and non-athletes. 10 swimmers, 10 handball players and 10 tennis players and ten non-athletes voluntarily participated in this study. Electromyography activity of shoulder muscles ...

SYNOPSIS This clinical commentary discusses the mechanisms used by the lower-limb musculature to achieve faster running speeds. A variety of methodological approaches have been taken to evaluate lower-limb muscle function during running, including direct recordings of muscle electromyographic signal, inverse dynamics-based analyses, and computational musculoskeletal modeling. Progressing runnin...