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Background: Scars interfere with the motor system; however, the influence of c-section scars has not been described yet. The aim of this study is to relate the presence of abdominal scars from a caesarean section with changes in postural control-stability and orientation and abdominal and lumbar neuromuscular control in the orthostatic position.
Methods: Cross-sectional analytical observational study comparing healthy primiparous women with caesarean delivery ( = 9) and physiologic delivery ( = 12) who have delivered more than one year before. The relative electromyographic activity of the rectus abdominis, transverse abdominis/oblique internus and lumbar multifidus muscles, antagonist co-activation, the ellipse area, amplitude, displacement, velocity, standard deviation, and spectral power of the centre of pressure, and thoracic and lumbar curvatures, were evaluated in the standing position in both groups, through an electromyographic system, a pressure platform and spinal mouse system. In the "caesarean delivery" group, scar mobility was evaluated using a modified adheremeter.
Results: Significant differences in CoP medial-lateral velocity and mean velocity were observed between groups ( < 0.050), while no significant differences were in the level of muscle activity, antagonist co-activation, and thoracic and lumbar curvatures ( > 0.05).
Conclusions: The information provided by the pressure signal seems to identify postural impairments in women with c-sections.
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http://dx.doi.org/10.3390/s23104878 | DOI Listing |
Exp Brain Res
September 2025
Monash Neuromodulation Research Unit, Department of Physiotherapy, School of Primary and Allied Health Care, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia.
This study aimed to investigate the corticospinal drive modulation to Agonist and Antagonist arm muscles following Strength training and detraining, as neural adaptations are critical for early strength gains. Seventeen healthy, untrained young adults underwent four weeks of unilateral dumbbell curl training (60-80% of one-repetition maximum) followed by four weeks of detraining. Transcranial magnetic stimulation (TMS) assessed corticospinal excitability and inhibition across multiple intensities (100-200% rMT).
View Article and Find Full Text PDFSci Rep
July 2025
Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, Hong Kong SAR, China.
Sarcopenia causes muscle loss and functional decline in older adults, yet the lower limb muscle activation patterns of sarcopenic patients during functional activities remain unclear. This study aims to investigate the differences in muscle activation between sarcopenic and healthy older adults during functional activities and to explore task-specific compensatory neuromuscular strategies. Eight sarcopenic patients and eight age-matched healthy older adults performed the standardized six-meter walk test (6MWT) and five times sit-to-stand test (5STS) with surface electromyography (EMG) used to record activity from eight muscles of the dominant leg.
View Article and Find Full Text PDFFront Psychol
May 2025
Centre for Performance Science, Royal College of Music, London, United Kingdom.
Aims: This scoping review aimed to generate a novel evidence-based model of antagonistic muscular co-contraction (AMCC)'s effects on human movement. The review applies this model to the context of skilled, healthy piano playing to enable advances in pedagogy and research that can aid pianists in developing and maintaining skill and task-related health.
Background: Piano playing is a challenging, complex activity that carries significant risk of playing-related neuromusculoskeletal disorder (PRNDs).
J Sports Sci Med
March 2025
School of Human Kinetics and Recreation Memorial University of Newfoundland St. John's, Newfoundland and Labrador, Canada.
Stretching the antagonist muscle to enhance agonist performance has gained considerable attention. However, most studies have focused on one stretching duration. Hence, the aim of this study was to compare varying durations (40-, 80-, and 120-seconds) of antagonist (dorsiflexors) static stretching (SS) on agonist (plantar flexors: PF) muscle performance.
View Article and Find Full Text PDFJ Insect Physiol
March 2025
Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan. Electronic address:
The foreleg movements during mantis strikes can be determined by three joint angles: the prothorax-coxa (P-C), coxa-trochanter (C-T), and femur-tibia (F-T). To understand how foreleg movements are controlled by muscle activities in the Chinese mantis, we combined motion analysis with electromyogram (EMG) recordings from three antagonist pairs, one at a time: the coxal promotor and remotor in the P-C joint, the trochanteral extensor and flexor in the C-T joint, and the tibial extensor and flexor in the F-T joint. During the P-C joint angle increase, a burst of spikes was observed in the EMG recordings from the coxal promotor.
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