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Comparison of stop-jump muscle synergies in amateur basketball players with and without asymptomatic patellar tendon abnormalities during simulated games.
Acta Bioeng Biomech
September 2024
Faculty of Sports Science, Ningbo University, Ningbo, China.
: Asymptomatic patellar tendon abnormality (APTA) is considered a precursor to patellar tendinopathy (PT), but its pathogenesis remains unclear, especially regarding changes in muscle coordination. Therefore, it is essential to explore the muscle synergy patterns in individuals with APTA. This study recorded sEMG data during stop-jump tasks in 8 APTA and 8 healthy amateur male basketball players in a simulated basketball game.
View Article and Find Full Text PDFEffect of Eight-Week Transcranial Direct-Current Stimulation Combined with Lat Pull-Down Resistance Training on Improving Pull-Up Performance for Male College Students.
Life (Basel)
January 2025
Sport and Health Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Physical Education Department, Tongji University, Shanghai 200092, China.
The aim of this study was to investigate the effects and potential mechanisms of 8-week transcranial direct-current stimulation (tDCS) combined with resistance training (RT) on pull-up performance in male college students. Twenty-five male college students were randomly assigned to either RT combined with anodal tDCS stimulation (RT + tDCS) or RT alone (RT). Participants of both groups engaged in lat pull-down training programs for 8 weeks, with the RT + tDCS group receiving 20 min tDCS before each RT session.
View Article and Find Full Text PDFEffect of additional scapular movement on the scapular muscle activity during arm raising.
Int J Sports Med
January 2025
Physical Therapy, Catholic University of Pusan, Busan, Korea (the Republic of).
The effects of the two popular strategies, scapular adduction and depression and scapular posterior tilt, on muscle activity of the trapezius and serratus anterior muscles have not been compared. This study demonstrates the effects of additional scapular adduction and depression or scapular posterior tilt movements on the activation of trapezius and serratus anterior muscles and scapular kinematics during arm raising. Eighteen asymptomatic men performed arm raising tasks with and without additional scapular movements, including scapular adduction and depression or scapular posterior tilt.
View Article and Find Full Text PDFAnalysis of Connectivity in Electromyography Signals to Examine Neural Correlations in the Activation of Lower Leg Muscles for Postural Stability: A Pilot Study.
Bioengineering (Basel)
January 2025
School of Engineering, Grand Valley State University, Grand Rapids, MI 49504, USA.
In quiet standing, the central nervous system implements a pre-programmed ankle strategy of postural control to maintain upright balance and stability. This strategy comprises a synchronized common neural drive delivered to synergistically grouped muscles. This study evaluated connectivity between EMG signals of the unilateral and bilateral homologous muscle pairs of the lower legs during various standing balance conditions using magnitude-squared coherence (MSC).
View Article and Find Full Text PDFRevisiting motor unit recruitment to TMS in amyotrophic lateral sclerosis: cortical inhibition is retained during voluntary contractions.
Exp Brain Res
January 2025
Dept. of Neurosurgery, Upstate Medical University, 750 E. Adams St, Syracuse, NY, 13210, USA.
Transcranial magnetic stimulation (TMS) has been used for many years to study the pathophysiology of amyotrophic lateral sclerosis (ALS). Based on single- or dual-pulse TMS and EMG and/or single motor unit (MU) recordings, many groups have described a loss of central inhibition as an early marker of ALS dysfunction, reflecting a state of cortical 'hyperexcitability'. This conclusion is not without its detractors, however, leading us to reexamine this issue using 4-pulse TMS, shown previously to be more effective for testing central motor pathway functional integrity.
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