Table 1.

PICO components and the search keywords.

Population	“Parkinson” OR “parkinson disease” OR “parkinsonism” OR “parkinson disorder”
Intervention	“Boxing” OR “boxing training” OR “boxing exercise” OR “rock steady boxing”
Comparison	“Control group” OR “usual therapy” OR “conventional therapy” OR “physiotherapy”
Outcome	“Functionality” AND/OR “quality of life”
Study	Randomized Controlled Trial