13. Buttock-knee length

13. Buttock-knee length

　

　 Definition:
Horizontal distance from the back of the uncompressed buttock to the front of the kneecap.
　

Applications:
Clearance between seat back and obstacles in front of the knee.

　

Corrections:
20mm for heavy outdoor clothing.

　

Buttock-knee length (mm)		Men				Women
Buttock-knee length (mm)		5th %ile	50th %ile	95th %ile	SD	5th %ile	50th %ile	95th %ile	SD
	Hong Kong	505	550	595	26	470	520	570	30
	British, Aged19-65 years	540	595	645	31	520	570	620	30
	US, Aged19-65 years	550	600	650	31	525	575	625	31
	Japanese adults	500	550	600	29	485	530	575	26

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