6. Knuckle height

6. Knuckle height

　

　

Definition:

Vertical distance from the floor to metacarpal III (i.e. the knuckle of the middle finger).
　

Applications:

Reference level for handgrips; for support (handrails, etc.) approximately 100mm above knuckle height is desirable. Handgrips on portable objects should be at less than knuckle height. Optimal height for exertion of lifting force.

　

　

Corrections:

Shoes as above.

　

Knuckle height (mm)		Men				Women
Knuckle height (mm)		5th %ile	50th %ile	95th %ile	SD	5th %ile	50th %ile	95th %ile	SD
	Hong Kong	685	750	815	40	650	715	780	41
	British, Aged19-65 years	690	755	825	41	660	720	780	36
	US, Aged19-65 years	700	765	830	41	670	730	790	37
	Japanese adults	675	740	805	40	650	705	760	33

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