Tensiomyographical responsiveness to peripheral fatigue in quadriceps femoris

• DOI: 10.7717/peerj.8674
• Publication Date: 2020-02-28T12:24:51Z
• Authors: Rodrigo Martín-Sa...; Francesc Medina-M...; José Casaña-Granell; José A. García-Vidal; Carmen Lillo-Navarro; Josep C. Benítez-...
• Keywords: Quadriceps femoris muscle

Fatigue influences athletic performance and can also increase the risk of injury in sports, most methods to evaluate it require an additional voluntary effort. Tensiomyography (TMG), which uses electrical stimulation a displacement sensor muscle contraction properties one or more bellies, has emerged as technique that assess presence peripheral central fatigue without requiring efforts. However, evaluation TMG's ability detect is limited, both at level bellies statistical methods. Thus, aim present study was twofold: (i) examine compare tensiomyographical responsiveness quadriceps femoris (QF) by multiple (ii) analyze sex differences variation produced TMG parameters.Thirty-nine recreational athletes participated (19 males/20 females; aged 22 ± 2 years). parameters QF maximal isometric (MVIC) were measured before after protocol. used maximum radial deformation (Dm), time between 10-90% Dm (Tc), velocity (Vc) first 10% (V10) Dm. Internal analyzed paired t-test standardized response mean (SRM). External examined correlations, regression models, receiver operating characteristic (ROC) curves.All parameters, except for Tc rectus vastus medialis, showed large internal responsiveness. In adjusted models sex, only V10 statistically associated (p < 0.05) with b coefficients 0.40 0.43, respectively. r2 explained 22% total variance. addition, these could discriminate fatigue.Since main strength contributor during physical activities, clinicians trainers will be able magnitude changes evaluation.