Table 3.

Factors of bradykinesia

Delay in reaction time	Prolongation of movement time
• Inattention	• Muscular rigidity
• Disturbance in shifting aptitude	• Easy fatigability
• Executive dysfunction	• Muscular weakness
• Delay in visual information processing	• Disturbance in output control
• Disturbance in delayed response ※disturbance in maintenance of response criteria	• Difficulty in switching of movement patterns
• Abnormality in disinhibition	• Difficulty in termination of movement
• Decrease in initial motor output	• Freezing: disturbance in rhythm in movement