ArticleEuropean journal of applied physiology2024
Sex differences in laterality of motor unit firing behavior of the first dorsal interosseous muscle in strength-matched healthy young males and females.
Article in European journal of applied physiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Quercetin ingestion alters motor unit behavior and enhances improvement in muscle strength following resistance training in older adults: a randomized, double-blind, controlled trial.European journal of nutrition · 2025Trial
- Sex differences in climbing endurance emerge from combined physiological adaptation and neural strategies.European journal of applied physiology · 2026Article
- Effects of Training with Hybrid Assistive Device on Motor Unit Behavior After Total Knee Arthroplasty: A Randomized Controlled Trial.Annals of biomedical engineering · 2026Article
- Caffeine as an Ergogenic Aid for Neuromuscular Performance: Mechanisms of Action from Brain to Motor Units.Nutrients · 2026Review
- Comparison of the methods for detecting lower limb asymmetries: isokinetic dynamometry vs. tensiomyography derived indices.Frontiers in sports and active living · 2026Article
- Relationship Between Quadriceps Neuromuscular Activity and Knee Extensor Strength at Four Months After ACL Reconstruction in High-Level Young Athletes.Orthopaedic journal of sports medicine · 2025Article
- Association Between Bottle-Opening Ability and Muscle Weakness in Patients With Coronary Artery Disease.Circulation reports · 2025Article
- Relative Contributions of Motor Unit Firing Pattern, Muscle Quantity, and Muscle Quality to Maximum Muscle Strength in Female Patients with Early and Severe Knee Osteoarthritis.Annals of biomedical engineering · 2025Article
- Sex Differences in Motor Unit Behavior in Patients With Parkinson's Disease.The European journal of neuroscience · 2025Article
- No Differences in Motor Units Discharge Rate Between Females and Males in Explosive Ankle Dorsiflexions.Scandinavian journal of medicine & science in sports · 2025Article
- Sex-related differences in motoneuron firing behavior during typical development.Journal of neurophysiology · 2025Article
- Higher dominant muscle strength is mediated by motor unit discharge rates and proportion of common synaptic inputs.Scientific reports · 2025Article
- Sex disparities of human neuromuscular decline in older humans.The Journal of physiology · 2025Article
- Multi-channel EMG manifestations of upper-extremity muscle coordination imbalance among community-dwelling sarcopenic seniors.Biomedical engineering online · 2024Article
- Characterising sex-related differences in lower- and higher-threshold motor unit behaviour through high-density surface electromyography.Experimental physiology · 2024Article
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Authors and funding
6 authors.
Funding
Abstract
purposeThe purpose of this study was to compare laterality in motor unit firing behavior between females and males.
methodsTwenty-seven subjects (14 females) were recruited for this study. The participants performed ramp up and hold isometric index finger abduction at 10, 30, and 60% of their maximum voluntary contraction (MVC). High-density surface electromyography (HD-sEMG) signals were recorded in the first dorsal interosseous (FDI) muscle and decomposed into individual motor unit (MU) firing behavior using a convolution blind source separation method.
resultsIn total, 769 MUs were detected (females, n = 318 and males, n = 451). Females had a significantly higher discharge rate than males at each relative torque level (10%: male dominant hand, 13.4 ± 2.7 pps vs. female dominant hand, 16.3 ± 3.4 pps; 30%: male dominant hand, 16.1 ± 3.9 pps vs. female dominant hand, 20.0 ± 5.0 pps; and 60%: male dominant hand, 19.3 ± 3.8 vs. female dominant hand, 25.3 ± 4.8 pps; p < 0.0001). The recruitment threshold was also significantly higher in females than in males at 30 and 60% MVC. Furthermore, males exhibited asymmetrical discharge rates at 30 and 60% MVC and recruitment thresholds at 30 and 60% MVC, whereas no asymmetry was observed in females.
conclusionIn the FDI muscle, compared to males, females exhibited different neuromuscular strategies with higher discharge rates and recruitment thresholds and no asymmetrical MU firing behavior. Notably, the findings that sex differences in neuromuscular activity also occur in healthy individuals provide important information for understanding the pathogenesis of various diseases.
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