. 2019 Sep 5;11(9):2120. doi: 10.3390/nu11092120

Table 1.

Data for power output and root mean square-EMG (rms-EMG) recorded during the Wingate test.

Variable	Experimental Condition	W_peak-EMG_Wpeak			TW_peak-TEMG_peak			W_mean-EMG_mean			W_min-EMG_Wmin
Variable	Experimental Condition	M ± SD	p-Value	ES	M ± SD	p-Value	ES	M ± SD	p-Value	ES	M ± SD	p-Value	ES
W_output	Placebo	10.20 ± 0.59	<0.01 *	1.26	8.88 ± 1.64	0.01 *	0.58	8.25 ± 0.37	0.01 *	1.29	6.19 ± 0.56	0.123	0.75
W_output	Caffeine	10.84 ± 0.49	<0.01 *	1.26	8.00 ± 1.60	0.01 *	0.58	8.68 ± 0.34		1.29	6.49 ± 0.22	0.123	0.75
EMG_VL	Placebo	0.78 ± 0.09	0.268	0.71	12.25 ± 9.27	0.270	0.68	0.74 ± 0.11	0.247	0.62	0.41 ± 0.15	0.332	0.47
EMG_VL	Caffeine	0.69 ± 0.17	0.268	0.71	7.38 ± 5.58	0.270	0.68	0.66 ± 0.16	0.247	0.62	0.33 ± 0.21	0.332	0.47
EMG_BF	Placebo	0.67 ± 0.19	0.435	0.29	8.63 ± 3.70	0.292	0.36	0.55 ± 0.14	0.254	0.37	0.26 ± 0.11	0.430	0.37
EMG_BF	Caffeine	0.72 ± 0.18	0.435	0.29	12.13 ± 8.43	0.292	0.36	0.60 ± 0.15	0.254	0.37	0.31 ± 0.17	0.430	0.37
EMG_GM	Placebo	0.68 ± 0.16	0.311	0.73	3.63 ± 3.66	0.022 *	0.91	0.64 ± 0.08	0.728	0.25	0.36 ± 0.31	0.387	0.22
EMG_GM	Caffeine	0.56 ± 0.19	0.311	0.73	8.00 ± 6.26	0.022 *	0.91	0.62 ± 0.09	0.728	0.25	0.31 ± 0.15	0.387	0.22
EMG_TA	Placebo	0.73 ± 0.21	0.984	0.00	7.75 ± 3.45	0.722	0.16	0.63 ± 0.10	0.298	0.59	0.23 ± 0.12	0.423	0.26
EMG_TA	Caffeine	0.73 ± 0.20	0.984	0.00	7.13 ± 4.55	0.722	0.16	0.55 ± 0.18	0.298	0.59	0.20 ± 0.13	0.423	0.26
EMG_GL	Placebo	0.74 ± 0.15	0.824	0.16	8.00 ± 5.37	0.936	0.05	0.67 ± 0.12	0.935	0.09	0.40 ± 0.11	0.980	0.00
EMG_GL	Caffeine	0.76 ± 0.12	0.824	0.16	7.75 ± 5.03	0.936	0.05	0.66 ± 0.13	0.935	0.09	0.40 ± 0.16	0.980	0.00
EMG_MED	Placebo	0.72 ± 0.07	0.607	0.60				0.65 ± 0.05	0.261	0.44	0.33 ± 0.07	0.343	0.22
EMG_MED	Caffeine	0.69 ± 0.03	0.607	0.60				0.62 ± 0.09	0.261	0.44	0.31 ± 0.12	0.343	0.22

W_peak: Peak power (w/kg); EMG_Wpeak: rms-EMG at W_peak; TW_peak: time (s) to achieve the maximal power; TEMG_peak: time (s) to achieve the maximal rms-EMG record; W_mean: Average power (w/kg); EMG_mean: Average rms-EMG; W_min: Minimum power (w/kg); EMG_Wmin: rms-EMG at W_min; EMG_VL: rms-EMG recorded on the vastus lateralis; EMG_BF: rms-EMG recorded on the biceps femoris; EMG_GM: rms-EMG recorded on the gluteus maximus; EMG_GL: rms-EMG recorded on the gastrocnemius lateral head; EMG_TA: rms-EMG recorded on the tibialis anterior; EMG_MED: Mean rms-EMG recorded on the five muscles analyzed; Data of power output expressed as Watts·kg⁻¹, and rms-EMG data as a base index one. * Significant difference between Placebo and Caffeine condition at p < 0.05.