Ef” cacy of two forms of electrical stimulation in increasing quadriceps strength: a randomized controlled trial

Abstract

Both interferential and low-frequency currents can be used in strength training with the parameters used in this study.

Comparison of the Effectiveness of Transcutaneous Electrical Nerve Stimulation and Interferential Therapy on the Upper Trapezius in Myofascial Pain Syndrome

“…No one electrode was located directly over the MTrP and this may have reduced current density delivered precisely to excitable tissue associated with the MTrP. Though early studies have recommended bipolar method since it reaches deeper tissues and more comfortable compared to the tetrapolar manner, 47,48 Flori and his colleagues 49 suggest that tetrapolar manner is more effective as it produced a higher accommodation threshold.…”

Evaluating the efficacy of acupuncture in defined aspects of stroke recovery

“…This may actually be due to the effect of electrical stimulation rather than actual needling as these two interventions were not separately evaluated in this study. Electrical stimulation to muscle tissue causes a twitch or contraction and a change in the micro-circulation and therefore may provide the mechanism for an improved MI [3,29,33].…”

Is high-frequency neuromuscular electrical stimulation a suitable tool for muscle performance improvement in both healthy humans and athletes?

“…On the contrary to what has been observed for isometric strength, dynamic strength enhancement following NMES training in non-athlete subjects is still debated since maximal concentric strength was found to be unchanged (Boutelle et al 1985;Currier and Mann 1983;Kubiak et al 1987;Maffiuletti et al 2002b;St Pierre et al 1986) or increased either for specific (mainly low) angular velocities (Colson et al 2000(Colson et al , 2009Nobbs and Rhodes 1986;Romero et al 1982) or for all (tested) (Bircan et al 2002;Fahey et al 1985;Halback and Straus 1980;Martin et al 1993;Zhou et al 2002) angular velocities (Table 1). Information regarding NMES-induced changes in maximal eccentric strength are scarce and ambiguous with studies reporting either beneficial effects for elbow flexor (Colson et al 2000(Colson et al , 2009 and plantar flexor muscles (Maffiuletti et al 2002b) or no improvement for the quadriceps muscle (Lai et al 1988).…”