Effects of ingesting a pre-workout dietary supplement with and without synephrine for 8 weeks on training adaptations in resistance-trained males

Table 7 Performance Data

Variable	Group	Number	Time (wk)				p-value
Variable	Group	Number	0	4	8		p-value
Bench Press (kg)	PLA	27	100.6 ± 20.8	102.9 ± 24.7	104.0 ± 23.3	Group	0.56
	PWS	27	96.7 ± 23.1	99.2 ± 21.3	102.7 ± 21.7	Time	<0.001
	PWS + S	26	102.0 ± 16.3	106.2 ± 16.7	108.6 ± 17.1	G x T	0.33
Leg Press (kg)	PLA	27	472.8 ± 149.8	490.3 ± 134.2	491.1 ± 131.0	Group	0.67
	PWS	27	436.6 ± 96.6	466.0 ± 101.9	474.0 ± 96.3	Time	<0.001
	PWS + S	26	454.2 ± 79.4	474.4 ± 92.1	494.9 ± 100.9	G x T	0.28
Peak Power (Watt)	PLA	27	1,472 ± 485	1,630 ± 475	1,507 ± 385	Group	0.91
	PWS	27	1,502 ± 384	1,602 ± 354	1,603 ± 466	Time	0.01
	PWS + S	26	1,445 ± 324	1,605 ± 444	1,544 ± 403	G x T	0.83
Mean Power (Watt)	PLA	27	647 ± 146	640 ± 133	636 ± 127	Group	0.95
	PWS	27	630 ± 72	643 ± 66	638 ± 69	Time	0.23
	PWS + S	26	630 ± 114	656 ± 134	612 ± 145	G x T	0.40
Peak Power (Watt/kg)	PLA	27	18.3 ± 5.6	20.2 ± 5.4	18.4 ± 4.0	Group	0.90
	PWS	27	18.6 ± 4.7	19.8 ± 4.6	19.8 ± 5.8	Time	0.02
	PWS + S	26	18.3 ± 3.6	20.2 ± 5.3	19.4 ± 4.8	G x T	0.80
Mean Power (Watt/kg)	PLA	27	8.0 ± 1.1	7.9 ± 1.0	7.7 ± 0.9	Group	0.73
	PWS	27	7.8 ± 1.2	8.0 ± 1.1	7.9 ± 1.0	Time	0.18
	PWS + S	26	8.0 ± 1.1	8.2 ± 1.4	8.0 ± 1.2	G x T	0.33
Total Work (Joules)	PLA	27	19,394 ± 4,377	19,217 ± 4,019	19,109 ± 3,826	Group	0.98
	PWS	27	18,927 ± 2,166	19,319 ± 2,003	19,156 ± 2,095	Time	0.17
	PWS + S	26	18,923 ± 3,431	19,680 ± 4,025	19,213 ± 3,110	G x T	0.29

Values are means ± standard deviations. Strength (Bench and Leg Press) were analyzed by MANOVA. MANOVA analysis revealed overall Wilks’ Lambda group (p = 0.58), time (p < 0.001), and group x time (p = 0.29). Greenhouse-Geisser time and group x time interaction p-values are reported with univariate group p-values. * represents p < 0.05 difference from baseline. ^ represents p < 0.05 difference from wk 4

ISSN: 1550-2783