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. 2022 Apr 11;9:868640. doi: 10.3389/fnut.2022.868640

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Copyright © 2022 Okabe, Yaku, Uchida, Fukamizu, Sato, Sakurai, Tobe and Nakagawa.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Correlation between individual basal physical parameters and amounts of increased NAD⁺ levels. The Y axis of each panel was fixed as the difference of blood NAD levels in 4 weeks. NAD levels at 0 weeks were subtracted from NAD levels at 4 weeks to calculate the change. Basal physical parameters (A) and body composition (B) at 0 weeks were compared with the difference of NAD at 4 weeks. Correlation coefficients were calculated by using Pearson’s correlation coefficient formula and indicated as R on the top of each panel.