RT Journal Article
T1 Convergent Validity between Electromyographic Muscle Activity, Ultrasound Muscle Thickness and Dynamometric Force Measurement for Assessing Muscle
A1 Varol, Umut
A1 Navarro Santana, Marcos José
A1 Valera Calero, Juan Antonio
A1 Antón-Ramírez, Sergio
A1 Álvaro-Martínez, Javier
A1 Díaz Arribas, María José
A1 Fernández-de-las-Peñas, César
A1 Plaza Manzano, Gustavo
AB Muscle fatigue is defined as a reversible decline in performance after intensive use, whichlargely recovers after a resting period. Surface electromyography (EMG), ultrasound imaging (US)and dynamometry are used to assess muscle activity, muscle morphology and isometric force capacity.This study aimed to assess the convergent validity between these three methods for assessingmuscle fatigue during a manual prehension maximal voluntary isometric contraction (MVIC). Adiagnostic accuracy study was conducted, enrolling 50 healthy participants for the measurementof simultaneous changes in muscle thickness, muscle activity and isometric force using EMG, USand a hand dynamometer, respectively, during a 15 s MVIC. An adjustment line and its variance(R2) were calculated. Muscle activity and thickness were comparable between genders (p > 0.05).However, men exhibited lower force holding capacity (p < 0.05). No side-to-side or dominance differenceswere found for any variable. Significant correlations were found for the EMG slope with US(r = 0.359; p < 0.01) and dynamometry (r = 0.305; p < 0.01) slopes and between dynamometry and USslopes (r = 0.227; p < 0.05). The sample of this study was characterized by comparable muscle activityand muscle thickness change between genders. In addition, fatigue slopes were not associated withdemography or anthropometry. Our findings showed fair convergent associations between thesemethods, providing synergistic muscle fatigue information.
PB MDPI
SN 1424-8220
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/73326
UL https://hdl.handle.net/20.500.14352/73326
LA eng
DS Docta Complutense
RD 17 abr 2025