Early administration of postoperative BCAA-enriched PPN may improve lean body mass loss in gastric cancer patients undergoing gastrectomy.

"Declarations Ethics approvalAll procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of the Kitasato University School of Medicine and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. This study was approved by Kitasato University School of Medicine Hospital Ethics Committee (C20-274). For the registry and the registration no. of the study/trial, this clinical trial was registered with the University Hospital Medical Information Network Clinical Trial registry (UMIN000042579). The date of registration for prospectively registered trials is 2020/11/30. Animal studiesN/A. Consent to participateInformed consent was obtained from all participants included in the study. Conflict of interestThe authors declare no competing interests. Conflict of interest The authors declare no competing interests."

"This pilot study was designed as a single-center, open-labeled, superiority, randomized controlled trial (RCT) as a preliminary evaluation of the effect of BCAA administration in patients with gastric cancer who underwent gastrectomy with exercise rehabilitation. This clinical trial was registered with the University Hospital Medical Information Network Clinical Trial registry (UMIN000042579). The patients were recruited between January 2021 and October 2021 and 24 patients were prospectively enrolled in the study (C20-274). Declarations: Ethics approvalAll procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of the Kitasato University School of Medicine and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. This study was approved by Kitasato University School of Medicine Hospital Ethics Committee (C20-274). For the registry and the registration no. of the study/trial, this clinical trial was registered with the University Hospital Medical Information Network Clinical Trial registry (UMIN000042579). The date of registration for prospectively registered trials is 2020/11/30.: Animal studiesN/A.: Consent to participateInformed consent was obtained from all participants included in the study.: Conflict of interestThe authors declare no competing interests. Ethics approval: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of the Kitasato University School of Medicine and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. This study was approved by Kitasato University School of Medicine Hospital Ethics Committee (C20-274). For the registry and the registration no. of the study/trial, this clinical trial was registered with the University Hospital Medical Information Network Clinical Trial registry (UMIN000042579). The date of registration for prospectively registered trials is 2020/11/30."