Table 7.

Linear regression model: trunk inclination classifications as predictive variables associated with %RHR in the total sample (n = 40) for the three tasks of felling, delimbing, and bucking.

	Felling					Delimbing					Bucking
Trunk Inclination	B	β	CI95%	p	R2	B	β	CI95%	p	R2	B	β	CI95%	p	R2
0°–30°	0.652	0.340	0.113–1.19	0.01	0.143	0.682	0.190	0.297–1.06	0.01	0.263	0.676	0.365	0.195–1.156	0.01	0.184
31°–60°	1.190	0.349	0.250–2.131	0.01	0.155	1.150	0.411	0.316–1.948	0.01	0.179	1.65	0.514	0.645–2.66	0.01	0.235
>60°	0.933	0.341	0.168–1.699	0.01	0.145	0.727	0.956	−1.21–2.66	0.45	0.016	0.208	0.065	−0.816–1.323	0.68	0.005

B = unstandardized regression coefficients; β = standardized regression coefficients; CI95% = confidence interval at 95%.