However, the most influential stimulus in the response of muscle is RT, which effectively increases maximal isometric and dynamic muscle contraction strength.
Maximal muscle contraction strength was measured (1 KHz) for the quadriceps femoris muscle, in vivo, as the peak knee extension torque exerted during maximal voluntary concentric muscle contraction in an isokinetic dynamometer (KinCom) (Suetta et al, 2004a).
Data showed that the finger flexor muscle contraction strength, assessed to evaluate the motor function recovery, and reached values not different from the control already 20 days after injury.
Without any voluntary muscle contractions muscle strength can even decrease by 5% per day [ 2].
The strength of muscle contraction (the decay of force) was measured from the beginning to the end of this 3-min muscle electrical stimulation with a gauge strain attached to the distal tendon (Microdynamometer S 60; Ugo Basile Narco Biosystem).
Index terms used were: neck, cervical, reproducibility of results, reliability, reproducibility, validation studies, validity, responsiveness, muscles, isometric strength, muscle contraction, muscle endurance, muscle fatigue, dynamometry and function test.
Active and passive ROM as well as pain arches were then determined by analysis of video registration executed simultaneously from the side and from above; 3) Testing for muscle contraction pain and muscle strength; 4) Palpation of muscle tendons and insertions.
The primary outcome was the muscles strength evaluated using the Medical Research Council (MRC) score (range 0 = no muscle contraction, to 5 = normal strength), scoring 3 muscle groups in each limb, at ICU and hospital discharge, compared to MRC score evaluated in ICU before the implementation of the physiotherapy program.
Physical examination of muscle strength was conducted using the Medical Research Council (MRC) score (range: 0 = no muscle contraction to 5 = normal strength) at ICU discharge [16].
Grip work integrates the maximal muscle strength with the time during which the muscle contraction can be maintained before the strength drops to 50% of its maximum.
Thus, vitamin D is not only important to bone health, but also plays an important role in immunomodulation, regulation of inflammation and cytokines, cell proliferation, cell differentiation, apoptosis, angiogenesis, muscle strength and muscle contraction [6, 9, 14].
