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. 2022 Mar 4;8:53. doi: 10.1186/s40814-022-01005-3

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 3 — Maximum seated grip strength by age group and gender in individuals with sickle cell disease. Boxplot of maximum seated grip strength of 3 trials on each hand. Mean grip strength by age group and gender is also represented by the star on each boxplot and compared to mean maximum grip strength normative values by age and gender in the United States published by Hanten et al. [35]