Rate of torque development scaling factor decreased following a 6-week unilateral isometric training using electrostimulation or voluntary contractionsKnežević Milović, Olivera (Avtor) Šarabon, Nejc (Avtor) García Ramos, Amador (Avtor) Majstorović, Nikola (Avtor) Milanović, Sladjan D. (Avtor) Filipović, Saša R. (Avtor) Mirkov, Dragan (Avtor) quadricepsstrengthRTD-SFRFD-SFEMSThis study explored the changes in the rate of torque development scaling factor (RTD-SF) and maximum voluntary isometric contraction (MVC) variables following six weeks of unilateral isometric electromyostimulation (EMS) and voluntary (VOL) exercises. Twenty-six physically active participants were randomly assigned to EMS (n = 13) or a VOL group. MVC and RTD-SF of the quadriceps femoris of both legs were assessed before and after training. EMS and VOL exercises had identical frequency (three sessions/week), intensity (60% MVC), volume (40 contractions), and work-to-rest ratio (18 min: 6.25 s of work/20 s of rest). There were no between-group differences for the trained leg with overall increases in maximal torque (Tmax) of ~29% (d = 2.11–2.12), ~13% for RTDmax (d = 0.92–1.10); ~23% for Intercept (d = 0.72–0.78), and reduction in RTD-SF by ~15% (d = 1.01–1.10). In the non-trained leg, significant moderate change was only observed after EMS for RTD-SF which decreased by 12.5% (d = 0.76)20242026-01-14 00:56:06Članek v reviji22466sl