The effect of citrus flavonoid extract supplementation on anaerobic capacity in moderately trained athletes: a randomized controlled trial

Table 3 Performance outcomes at baseline and after 8 weeks of supplementation, with corresponding p-values

Variable	Placebo (N = 31)		CFE400 (N = 30)		CFE500 (N = 31)		Estimated difference [95% CI]1	Effect size1	P1	Estimated difference [95% CI]2	Effect size2	P2
Variable	Baseline	8 weeks^†	Baseline	8 weeks^¥	Baseline	8 weeks^§	Estimated difference [95% CI]1	Effect size1	P1	Estimated difference [95% CI]2	Effect size2	P2
Weight (kg)	71.9 ± 11.5	72.6 ± 13	68.7 ± 11.7	67.6 ± 11.9	71.7 ± 9.8	73.1 ± 9.4	−0.26 [− 1.21, 0.69]	− 0.02	0.591	− 0.39 [− 1.33, 0.66]	−0.04	0.411
Average Power (W)	547 ± 141	528 ± 149	511 ± 134	508 ± 154	571 ± 149	564 ± 137	31.6 [8.33, 54.8]	0.22	0.008	8.43 [−14.7, 31.6]	0.06	0.471
5 s Peak Power (W)	726 ± 228	736 ± 255	675 ± 200	682 ± 216	762 ± 214	762 ± 228	29.4 [− 18.2, 77.1]	0.14	0.222	−11.5 [− 58.8, 35.9]	−0.05	0.631
Time to peak (s)	1.57 ± 3.0	0.91 ± 0.7	2.37 ± 1.9	1.17 ± 1.8	1.28 ± 1.1	1.8 ± 4.8	−0.15 [− 2.16, 1.86]	−0.07	0.882	1.07 [−0.92, 3.06]	0.49	0.290
Heart Rate Maximum (BPM)	171 ± 9	166 ± 14	173 ± 14	173 ± 18	173 ± 10	169.7 ± 13	2.30 [− 4.10, 8.69]	0.20	0.477	− 0.17 [− 6.58, 6,25]	−0.01	0.958

Values are presented as observed mean ± SD. Differences between the intervention groups and placebo group were compared with an unstructured linear mixed model with correction for baseline values. Estimated difference 1: Estimated difference in change scores from baseline between CFE400 and placebo obtained with the mixed model. Estimated difference 2: Estimated difference in change scores from baseline between CFE500 and placebo obtained with the mixed model. CI Conficence interval. Effect size1: effect size CFE400 vs. placebo. Effect size2: effect size CFE500 vs and placebo. P1: P-value between CFE400 and placebo, P2: P-value between CFE500 and placebo. CFE Citrus Flavonoid Extract. † Data from all 31 participants were included in the analysis, 28 participants actually completed the measurements after 8 weeks. ¥ Data from all 30 participants were included in the analysis, 25 participants actually completed the measurements after 8 weeks. § Data from all 31 participants were included in the analysis, 26 participants actually completed the measurements after 8 weeks.

ISSN: 1550-2783