. 2016 Aug 18;9(3):49. doi: 10.3390/ph9030049

Table 4.

Hemoglobin concentration (g/dL) in adult human subjects who consumed maca or a placebo at low altitude (LA) and high altitude (HA).

Time of Consumption (Weeks)	Placebo		Red Maca		Black Maca
Time of Consumption (Weeks)	^¶,¥ LA	HA ^¥	^¶,¥ LA	HA	^¶,¥ LA	HA
0	13.97 ± 0.20	17.80 ± 0.36	13.58 ± 0.24	18.21 ± 0.38	13.40 ± 0.23	17.47 ± 0.43
4	13.83 ± 0.28	18.03 ± 0.30	13.69 ± 0.27	17.28 ± 0.36 *	13.61 ± 0.21	16.40 ± 0.38 *^,a
8	13.68 ± 0.28	17.96 ± 0.29	13.64 ± 0.27	17.10 ± 0.37 *	13.48 ± 0.23	16.23 ± 0.38 **^,a
12	14.48 ± 0.28	17.91 ± 0.35	14.09 ± 0.28	17.38 ± 0.38 **	13.73 ± 0.23	16.22 ± 0.49 *^,a

Data are mean ± standard error of the mean. ^¶ p > 0.05 between maca groups and placebo group. ^¥ p > 0.05 with respect to time of treatment. * p < 0.01; ** p < 0.05 with respect to values at time 0. ^a p < 0.01 between the group receiving black maca and the group receiving a placebo.