Work

Muscle-specific neural modulation in biarticular semitendinosus and biceps femoris during isometric torque generation

Year: 2025

Type: article

Abstract: This study demonstrates that the semitendinosus and biceps femoris long head exhibit distinct preferred directions during multijoint isometric torque tasks. Whereas biceps femoris shows high interindividual variability despite anatomical alignment, semitendinosus consistently deviates from mechanical predictions, suggesting stable neural modulation. These findings reveal how the central nervous system selectively tunes muscle activity in a muscle-specific manner, balancing anatomical structure and task-dependent control across multijoint muscles.

Source: Journal of Neurophysiology

DOI: 10.1152/jn.00366.2025

Authors: Keisuke Kubota, Taku Miyazawa, Keisuke Hirata, Naohiko Kanemura

Institutions: Saitama Prefectural University, University of Human Arts and Sciences, Tokyo Kasei University

Language: English

Topic: Muscle activation and electromyography studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funder: Japan Society for the Promotion of Science

Award: Elucidation of the Mechanism of Muscle Co-contraction Based on Leg Force Exertion Patterns in Individuals with Mild Knee Osteoarthritis