422
5 Laser Specklometer, Speckle-Optical Diagnostics and Laser …
Fig. 5.32 Dependence of spectral density and PSD power on load value applied to biceps muscle
of arm: 1—without load; 2—2.5 kg; 3—5 kg; 4—7.5 kg; 5—10 kg. Reprinted from [87] with
permission
Fig. 5.33 Dependence of spectrum power S PSD on load value, applied to biceps muscle of arm.
Reprinted from [87] with permission
load, which determines tonic state of the biceps of the upper arm, i.e., degree of
its contractility. The increase of harmonics is accompanied by extension of the area
under the spectral curve (power of the spectrum), respectively.
As a result of the conducted study, it was ascertained that the power of the spectrum
increases monotonically up to 80% from the maximal muscular power for each of
the subjects. Further growth of isometric load leads to decrease of oscillatory activity
of the muscle that seems to be connected with fatigue that is proved by lessening of
spectral amplitudes and spectrum power.
5 Laser Specklometer, Speckle-Optical Diagnostics and Laser …
Fig. 5.32 Dependence of spectral density and PSD power on load value applied to biceps muscle
of arm: 1—without load; 2—2.5 kg; 3—5 kg; 4—7.5 kg; 5—10 kg. Reprinted from [87] with
permission
Fig. 5.33 Dependence of spectrum power S PSD on load value, applied to biceps muscle of arm.
Reprinted from [87] with permission
load, which determines tonic state of the biceps of the upper arm, i.e., degree of
its contractility. The increase of harmonics is accompanied by extension of the area
under the spectral curve (power of the spectrum), respectively.
As a result of the conducted study, it was ascertained that the power of the spectrum
increases monotonically up to 80% from the maximal muscular power for each of
the subjects. Further growth of isometric load leads to decrease of oscillatory activity
of the muscle that seems to be connected with fatigue that is proved by lessening of
spectral amplitudes and spectrum power.