Sentences with phrase «second isometric contraction»

Not exact matches

I've been doing isometric contractions myself for 30 seconds a day.

Isometric contractions were stimulated in muscles ex vivo using a Grass Technologies S48 stimulator at a stimulation frequency of 120 Hz for EDL muscles and 80 Hz for soleus muscles, a stimulation current of 28 V, and duration of 500 ms. Muscle fatigue was analyzed using a repeated stimulation protocol lasting 6 minutes and consisting of repeated 40 - Hz tetanic trains that occurred once every second and lasted 330 ms (62).

The fatigue index curve of EDL muscles from IL - 15Rα — KO mice was shifted to the right during the first 70 seconds of the repeated stimulation protocol, demonstrating the maintenance of isometric force with repeated contractions (Figure 1A).

Most PNF stretching techniques employ isometric agonist contraction - relaxation where the stretched muscles are contracted isometrically and then relaxed: After assuming initial passive stretch, the muscle being stretched is isometrically contracted for 7 - 15 seconds, then the muscle is relaxed for 2 - 3 seconds, and then immediately stretched again (even further than the initial passive stretch) for 10 - 15 seconds.

It appears that during isometric contractions at 80 % of maximum voluntary isometric contraction (MVIC), the heads of the triceps start to fatigue at 50, 40 and 65 seconds, for the lateral, long and medial heads respectively.