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. 2021 Jul 26;13(8):2555. doi: 10.3390/nu13082555

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(A) Difference in stress level initially and after three months of intervention in group A: P, percentage of the group; ΔP = P_After − P_before; P_o = P_before; ΔP/P_o relative change of percentage of the group (during experiment). (B) Difference in stress level initially and after three months of intervention in group B: P, percentage of the group; ΔP = P_After − P_before; P_o = P_before; ΔP/P_o relative change of percentage of the group (during experiment).

(A) Difference in stress level initially and after three months of intervention in group A: P, percentage of the group; ΔP = P_After − P_before; P_o = P_before; ΔP/P_o relative change of percentage of the group (during experiment). (B) Difference in stress level initially and after three months of intervention in group B: P, percentage of the group; ΔP = P_After − P_before; P_o = P_before; ΔP/P_o relative change of percentage of the group (during experiment).