F-Wave Waveform Values Based On the Correlation Coefficient of Each Waveform Increased Following Improved Voluntary Movements in a Patient with Cerebrovascular Disease: A Case Study with Long-Term Follow-Up

Abstract

To investigate the effect of physical therapy on F-wave characteristics in a patient with cerebrovascular disease, we tested the relationship between F-wave waveforms and the recovery of voluntary movement on the affected side. We measured F-waves of affected thenar muscles after stimulating the affected median nerve at the wrist in a left hemiplegia patient (female, 60 years old) with cerebrovascular disease. We analysed the F/M amplitude ratio and Fwave waveform values from 30 trials. F-wave waveform values were determined as follows. We calculated the correlation coefficient of each waveform and defined identifying F-waves as those with a correlation coefficient greater than 0.9. We determined the number of different wave forms from the number of identifying waveforms. F-waves were tested three times at 9, 52, and 70 months from sideration. The patient underwent physical therapy twice a week, with each session lasting 20 min. The F/M amplitude ratio gradually decreased and the number of F-wave waveform types gradually increased. Muscle tonus and voluntary movements of the affected arm gradually improved with physical therapy. In this patient with cerebrovascular disease, F-wave waveform values in her affected arm gradually increased as muscle tonus and voluntary movements of the arm improved.

Application of F-Wave Waveform for the Effect of Physical Therapy-Relationship between the Correlation Coefficient of the F-Wave Waveforms and Waveform Identification by Investigators

“…However, there are no criteria for comparing waveforms. A similar study examined the presence or absence of matching by overlaying waveforms for visual observation, but a study based on data was only performed by Suzuki et al [1][2][3].…”

“…This suggests that various shapes and sizes can be confirmed from the figure shown. Three researchers recognized the same waveform in two waveform in all waveforms (150 waveforms) and the CC was 0.95 or more In a study of waveform analysis by Suzuki et al [1][2][3], the F-wave was measured from the thenar muscles in hemiplegic patients with cerebrovascular disorders during exercise therapy. F-waves were evaluated during 9 to 70 months of illness.…”

“…However, increasing the excitability of spinal nerves is important as well as the activation of the brain as the job of a physical therapist involves treating muscles and soft tissues. The authors have been studying the excitability of the spinal nerves for many years [1][2][3]. Suzuki et al [2] analyzed the F-waves measured in the thenar muscles in hemiplegic patients with cerebrovascular disorder following exercise therapy.…”

“…The authors have been studying the excitability of the spinal nerves for many years [1][2][3]. Suzuki et al [2] analyzed the F-waves measured in the thenar muscles in hemiplegic patients with cerebrovascular disorder following exercise therapy. F-waves were compared from 9 months to 70 months of the illness.…”

Examination of New Parameters from F-Wave Waveform Using Addition Averaging Method

“…There are reports of Guillain-Barre syndrome [15][16][17], Charcot-Marie-Tooth disease [19], and diabetic neuropathy [20,21], which are diseases in which motor nerves are predominantly impaired. There are reports related to spasticity, one of the pyramidal tract disorders [22][23][24][25]. In recent years, there have been many reports of amyotrophic lateral sclerosis that is an intractable disease in which both upper and lower motor neurons are degenerated [1,2].…”