Table 1.

Mean forces (N ± standard deviation) produced using different ERB lengths, various elongation values, and different therapeutic ERB

ERB color	Resting length (cm)	Elongation value compared to resting band length (Force values are N ± SD)
Tan		1.25	1.5	1.75
	10	6.3 ± 0.3	10.3 ± 1.7	11.5 ± 0.2
	40	5.9 ± 0.1	8.9 ± 0.2	10.7 ± 0.2
Yellow		1.25	1.5	1.75
	10	10.7 ± 0.2	14.3 ± 0.2	15.8 ± 0.2
	40	9.6 ± 0.1	12.9 ± 0.1	14.9 ± 0.2
Red		1.25	1.5	1.75
	10	12.6 ± 0.3	16.6 ± 0.2	18.8 ± 0.3
	40	11.5 ± 0.2	15.6 ± 0.2	18 ± 0.3
Green		1.25	1.5	1.75
	10	16.9 ± 0.3	22.7 ± 0.3	25.7 ± 0.4
	40	15.5 ± 0.2	21.1 ± 0.3	24.3 ± 0.3
Blue		1.25	1.5	1.75
	10	19.3 ± 0.4	25.9 ± 0.4	29.1 ± 0.7
	40	17.7 ± 0.2	24.0 ± 0.3	27.6 ± 0.3
Black		1.25	1.5	1.75
	10	24.7 ± 0.2	33.4 ± 0.7	38.1 ± 0.6
	40	24.5 ± 0.5	33.4 ± 0.4	38.7 ± 0.5