Table 3. Multiple linear regression model of the onset latency of lower trapezius and serratus anterior, 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
Lower Trapezius Onset Latency	Model 1 - Body Mass Index	0.08	−15.6	0.336	−48.4	17.0
	Model 2 - Body Fat percentage	0.10	−0.1	0.968	−6.8	6.5
	Model 3 - Axillary Skinfold	0.37	7.4	0.016*	1.4	13.4
	Model 4 - Fatigue	0.75	79.2	0.000*	55.4	103.0
	Model 1 - Body Mass Index	0.08	0.2	0.987	−33.0	33.5
	Model 2 - Body Fat percentage	0.10	5.8	0.077	−0.6	12.3
	Model 3 - Pectoral Skinfold	0.19	−0.6	0.782	−5.0	3.8
	Model 4 - Fatigue	0.70	89.4	0.000*	63.4	115.4
	Model 1 - Body Mass Index	0.08	−2.1	0.899	−35.9	31.7
	Model 2 - Body Fatpercentage	0.10	4.2	0.196	−2.3	10.7
	Model 3 - Subscapular Skinfold	0.23	1.7	0.499	−3.4	6.9
	Model 4 - Fatigue	0.70	87.5	0.000*	61.5	113.4
Serratus Anterior Onset Latency	Model 1 - Body Mass Index	0.14	6.4	0.738	−32.7	45.6
	Model 2 - Body Fat percentage	0.15	−0.5	0.885	−8.5	7.4
	Model 3 - Axillary Skinfold	0.36	7.2	0.047*	0.1	14.4
	Model 4 - Fatigue	0.78	104.2	0.000*	75.7	132.7
	Model 1 - Body Mass Index	0.14	21.3	0.243	−15.3	58.1
	Model 2 - Body Fat percentage	0.15	8.0	0.030*	0.8	15.2
	Model 3 - Pectoral Skinfold	0.33	−4.2	0.089	−9.1	0.6
	Model 4 - Fatigue	0.77	106.5	0.000*	77.9	135.2
	Model 1 - Body Mass Index	0.14	6.7	0.639	−22.5	36.1
	Model 2 - Body Fat percentage	0.15	−2.3	0.401	−7.9	3.2
	Model 3 - Subscapular Skinfold	0.51	10.7	0.000*	6.2	15.3
	Model 4 - Fatigue	0.86	95.4	0.000*	72.9	117.8

Notes.

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