5.12 Speckle-Optical Diagnostics of Muscle Activity and …
451
Fig. 5.56 Characteristic of muscle contraction activity: 1—paravertebral muscles; 2—gluteus
maximus muscle; 3—rectus muscle of thigh; 4—gastrocnemius muscle. Reprinted from [87] with
permission
exercise. During the parallel study of speckle-optical parameters and bioelectrical
activity of biceps muscle of arm, the increase of average frequency of spectrum f
and amplitude indicator of global electromyogram in proportion to the increase of
isometric exercise was observed (Fig. 5.57). However, the increase in the spectrum
power lasted only till 80% from the maximal effort developed by the muscle, and
then the spectrum power decreased that is obviously connected with the reduction
Fig. 5.57 Dependence of power and medium frequency of biceps muscle of arm spectrum under
isometric contraction on the size of the load: 1—without load; 2—2 to 2.5 kg; 3—5 kg; 4—7.5 kg;
5—10 kg; 6—12.5 kg; 7—15 kg. Reprinted from [87] with permission
451
Fig. 5.56 Characteristic of muscle contraction activity: 1—paravertebral muscles; 2—gluteus
maximus muscle; 3—rectus muscle of thigh; 4—gastrocnemius muscle. Reprinted from [87] with
permission
exercise. During the parallel study of speckle-optical parameters and bioelectrical
activity of biceps muscle of arm, the increase of average frequency of spectrum f
and amplitude indicator of global electromyogram in proportion to the increase of
isometric exercise was observed (Fig. 5.57). However, the increase in the spectrum
power lasted only till 80% from the maximal effort developed by the muscle, and
then the spectrum power decreased that is obviously connected with the reduction
Fig. 5.57 Dependence of power and medium frequency of biceps muscle of arm spectrum under
isometric contraction on the size of the load: 1—without load; 2—2 to 2.5 kg; 3—5 kg; 4—7.5 kg;
5—10 kg; 6—12.5 kg; 7—15 kg. Reprinted from [87] with permission