Table 2. Multiple linear regression model of the onset latency of upper trapezius and middle trapezius, adjusted by the additive combination of the variables: body mass index, percentage of body fat, skinfolds, and fatigue in no-fatigue (n = 17) and fatigue (n = 17) groups.

		R2	β	P	95% CI
Upper Trapezius Onset Latency	Model 1 - Body Mass Index	0.08	−37.6	0.071	−78.7	3.4
	Model 2 - Body Fat percentage	0.10	1.0	0.796	−7.3	9.4
	Model 3 - Axillary Skinfold	0.11	2.4	0.517	−5.1	9.9
	Model 4 - Fatigue	0.13	−13.6	0.357	−43.5	16.2
	Model 1 - Body Mass Index	0.08	−32.6	0.089	−70.6	5.3
	Model 2 - Body Fat percentage	0.10	3.6	0.318	−3.7	11.1
	Model 3 - Pectoral Skinfold	0.10	−1.1	0.661	−6.1	3.9
	Model 4 - Fatigue	0.13	−12.2	0.405	−41.8	17.3
	Model 1 - Body Mass Index	0.08	−31.2	0.112	−70.1	7.7
	Model 2 - Body Fat percentage	0.10	3.4	0.356	−4.0	10.9
	Model 3 - Subscapular Skinfold	0.11	−0.8	0.767	−6.8	5.1
	Model 4 - Fatigue	0.12	−8.3	0.573	−38.1	21.5
Middle Trapezius Onset Latency	Model 1 - Body Mass Index	0.00	−36.7	0.130	−85.1	11.5
	Model 2 - Body Fat percentage	0.00	−3.7	0.441	−13.6	6.0
	Model 3 - Axillary Skinfold	0.27	9.5	0.035*	0.7	18.4
	Model 4 - Fatigue	0.69	107.0	0.000*	71.9	142.1
	Model 1 - Body Mass Index	0.00	−15.9	0.502	−63.7	31.9
	Model 2 - Body Fat percentage	0.00	2.0	0.658	−7.3	11.4
	Model 3 - Pectoral Skinfold	0.06	1.6	0.610	−4.8	8.0
	Model 4 - Fatigue	0.64	125.1	0.000*	87.8	162.5
	Model 1 - Body Mass Index	0.00	−22.0	0.357	−70.2	26.1
	Model 2 - Body Fatpercentage	0.00	0.5	0.904	−8.7	9.8
	Model 3 - Subscapular Skinfold	0.17	4.1	0.265	−3.3	11.5
	Model 4 - Fatigue	0.65	114.1	0.000*	77.2	151.0

Notes.

^*significant difference (P < 0.05); 95% CI, 95% confidence interval.