Table 3.

Mean forces (N ± standard deviation) generated by various elastic bands at 10 and 40 cm lengths with 95% confidence intervals

ERB color	Resting length (cm)	Force (N)	95% CI	P value
Tan	10	9.37 ± 0.04	[9.30–9.45]	< 0.0001
	40	8.49 ± 0.04	[8.42–8.57]
Yellow	10	13.62 ± 0.01	[13.59–13.65]	< 0.0001
	40	12.43 ± 0.01	[12.41–12.46]
Red	10	16.01 ± 0.01	[15.99–16.04]	< 0.0001
	40	15.02 ± 0.01	[14.99–15.04]
Green	10	21.75 ± 0.01	[21.72–21.77]	< 0.0001
	40	20.32 ± 0.01	[20.29–20.34]
Blue	10	24.74 ± 0.01	[24.71–24.77]	< 0.0001
	40	23.09 ± 0.01	[23.07–23.13]
Black	10	32.23 ± 0.03	[32.18–32.28]	< 0.0001
	40	32.05 ± 0.03	[31.99–32.10]

All color bands resulted in significantly different forces between the 10 and 40 cm resting lengths