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Article
Peer-Review Record

Citrulline Supplementation Improves Microvascular Function and Muscle Strength in Middle-Aged and Older Adults with Type 2 Diabetes

Nutrients 2025, 17(17), 2790; https://doi.org/10.3390/nu17172790
by Arturo Figueroa 1,*, Katherine N. Dillon 1,2, Danielle E. Levitt 1 and Yejin Kang 1,3
Reviewer 1: Anonymous
Reviewer 2:
Nutrients 2025, 17(17), 2790; https://doi.org/10.3390/nu17172790
Submission received: 25 July 2025 / Revised: 22 August 2025 / Accepted: 25 August 2025 / Published: 28 August 2025

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Minor revisions and considerations are as follows:

  1. The sample size is too small; please acknowledge this as a limitation of the study.
  2. Please check the number of female participants reported in the abstract, as it does not match the number indicated in Table 1.
  3. Please verify the age range reported in the abstract and ensure it aligns with the data presented in Table 1.
  1. Please double-check the formatting of the references.

Author Response

Responses to reviewers

Reviewer #1

We appreciate your time and effort invested in the review of our manuscript.  

English Language and Figures:

  1. The English could be improved to more clearly express the research.

Response: We reviewed the manuscripts and made some corrections throughout the text (highlighted in yellow).

  1. Figures and tables must be improved

Response: We made some changes to the footnotes in figures (2, 3, and 4) and tables (2 and 3).  In addition, columns for within-group differences p-values were added in tables 2 and 3.

 

Minor revisions and considerations are as follows:

  1. The sample size is too small; please acknowledge this as a limitation of the study.

Response: we acknowledged the small sample size as a limitation.

  1. Please check the number of female participants reported in the abstract, as it does not match the number indicated in Table 1.

Response: It was a mistake. There were 9 women in this study.

  1. Please verify the age range reported in the abstract and ensure it aligns with the data presented in Table 1.

Response: age range and mean ± SD are correct.

  1. Please double-check the formatting of the references.

Response: We checked the formatting of references.

 

 

 

Reviewer 2 Report

Comments and Suggestions for Authors

Congratulations to the authors. They have addressed a very attractive and novel clinical issue of sarcopenia as a microvascular complication of diabetes. In a double-blind, placebo-controlled experiment, the authors have found that citrulline improves endothelial reactivity and muscle strength in diabetic patients.

Minor comment:

Check line 285: Is RIH mistakenly entered instead of RHI?

Author Response

Reviewer #2

Comments and Suggestions for Authors

Congratulations to the authors. They have addressed a very attractive and novel clinical issue of sarcopenia as a microvascular complication of diabetes. In a double-blind, placebo-controlled experiment, the authors have found that citrulline improves endothelial reactivity and muscle strength in diabetic patients.

Minor comment:

Check line 285: Is RIH mistakenly entered instead of RHI?

Response: Yes, it was a typo. It is RHI. We appreciate your positive comments.

Thank you.

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