"HDsEMG Dataset of Fatigue-Induced Intramuscular Connectivity and Spatial Heterogeneity in the Biceps Brachii Across Contraction "

"This dataset contains processed high-density surface electromyography (HDsEMG) metrics from the biceps brachii during sustained isometric contractions at 20%, 40%, 60%, and 80% of maximal voluntary contraction under pre-fatigue and post-fatigue conditions. The dataset includes MVC data, conventional sEMG features, intramuscular connectivity metrics, and spatial distribution measures. Conventional features include RMS, MPF, and FD, while connectivity metrics include coherence- and graph-based measures such as connection strength, global efficiency, and clustering coefficient. Spatial measures include modified entropy-based indices. Each metric is provided as an individual CSV file with columns for subject, condition, load, and value. The dataset may support research on muscle fatigue, intramuscular connectivity, spatial heterogeneity, rehabilitation, and ergonomics."