Tables at a glance

Table 1

Table 2

Table 3

Table 4

Table 5

Table 6

Table 1

Aspect	Description
Nature of Disorder	Neurological disorder characterized by involuntary rhythmic oscillations of the hands
Demographic Affected	Affects individuals across age groups, from children to the elderly
Impact on Daily Life	Hinders fundamental activities such as eating, writing, drinking, and holding objects
Prevalence	Approximately 4 to 5% of the population
Diagnostic Challenges	Relatively enigmatic condition with predominantly subjective clinical diagnosis
Diagnostic Criteria	Inconsistently defined criteria leading to variations in diagnosis and treatment recommendations
Objective Measures Importance	Crucial for standardized diagnosis, tracking progression, and guiding targeted therapeutic interventions
Bridging the Gap	Addresses the gap between limited understanding and the need for precise and effective treatment

Table 1: Overview of Essential Hand Tremor Background and Significance

Table 2

Criteria	Inclusion Details
Number of Participants	16 (carefully selected)
Gender	8males, 8 females (both genders)
Age Range	20-85 years (wide range spanning various age groups)
Essential Hand Tremor Stages	Early, moderate, advanced
Inclusion Criteria	Strictly designed for a representative sample
Diversity in Participants	Ensures a holistic understanding of the condition
Variations Considered	Accounts for possible variations across age groups and disorder stages

Table 2: Participant Characteristics in the Study

Table 3

Method	Description
Accelerometry	Tri-axial accelerometer securely attached to the dorsum of each participant's hand
	Measures real-time data on linear acceleration in three spatial axes: X, Y, and Z
	Captures the full spectrum of essential hand tremor characteristics
Electromyography (EMG)	EMG electrodes strategically placed on specific hand muscles, including flexor and extensor groups
Electromyography (EMG)	Captures muscular activity during hand tremor episodes
Combined Approach	Simultaneous use of accelerometry and EMG for a comprehensive analysis of tremor properties

Table 3: Data Collection Methods in the Study

Table 4

Parameter

Correlation Coefficient (R_amplitude)

Interpretation

Hand Tremor Amplitude

~0.75

Highly significant positive correlation between hand tremor amplitude, measured by 3D accelerometry, and muscle activity detected by EMG.

Influence of Muscle Contractions

significant

The correlation underscores the substantial influence of muscle contractions on hand tremor amplitude.

Table 4: Correlation Between Hand Tremor Amplitude and Muscle Activity

Table 5

Variables	Correlation Coefficient
Hand Tremor Frequency (Accelerometry)	0.85
Muscle Electrical Activity (EMG)	0.7

Table 5: Correlation Between Hand Tremor Frequency and Muscle Electrical Activity

Table 6

Characteristic	Description
Direction	Determined through 3D accelerometry data analysis
Correlation with EMG	Confirmed involvement of extensor muscles primarily responsible for tremors
Biomechanical Aspects	Provides insight into the intricate interplay between muscles and movement
Implications for Treatment	Allows for more precise targeting of interventions, potentially reducing directional component of hand tremors

Table 6: Direction-Specific Involvement of Muscle Groups in Hand Tremors