Subjects were instructed to relax as much as possible and to avoid any voluntary contraction during the test.
It is possible that continuous US has improved low back muscle fatigue by increasing blood circulation in the region and helping improve blood supply [ 17, 23, 61] which in turn have caused more sufficient and longer muscle contraction during the test.
First, a maximal voluntary contraction of the tested muscles would not be suitable for the normalization of the EMG activity recorded during a passive movement.
The control group showed delayed wound healing and intensive wound contraction as compared to the test group.
After a few practice trials at levels perceived to be 50, 75, and 90% of the subjects' MVC, participants performed the test contraction by attempting to extend the knee against manual resistance at the ankle.
These two measurements will be used to calculate the maximum knee extensor moment (Nm) during an isometric maximal voluntary contraction (MVC) test as the product of the force in Newtons (N) and moment arm in metres (m).
Turbulent inflow was created using an active grid system installed between the contraction and test-section of the wind tunnel; the maximum turbulence intensity can reach 20%.
Secondly, the cooperative performances of the EAC were evaluated by the abrasion resistance test and the linear contraction coefficient test.
To explain the link between Nav channel activation and vascular contraction, we tested the participation of the Na+-Ca2+ exchanger by using the blocker KB-R7943 reportod to inhibit the reverse mode of exchange (Ca2+ influx/Na+ efflux) [23].
During the post-contraction isometric fatigue test, the only parameters influenced by the contraction modality were the initial CV and the rate of change in CV which were 12%and3737% greater (p < 0.05) respectively after contractions performed with elastic resistance compared to free weights.
