AUTHOR=Wang Xiaolin , Wang Yifei , Yang Xuezhen , Mohd Nasiruddin Nasnoor Juzaily Bin , Dong Delong , Samsudin Shamsulariffin Bin , Qin Xin-Min TITLE=Effects of blood flow restriction training on bone metabolism: a systematic review and meta-analysis JOURNAL=Frontiers in Physiology VOLUME=Volume 14 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2023.1212927 DOI=10.3389/fphys.2023.1212927 ISSN=1664-042X ABSTRACT=The efficacy of low-intensity blood flow restriction (LI-BFR) training programs in bone metabolism remains unclear compared to low-intensity (LI) training and high-intensity (HI) training. The aim of this review was to quantitatively identify the effects of LI-BFR training on changes in bone formation markers (i.e., bone-specific alkaline phosphatase, BALP), bone resorption (i.e., C-terminal telopeptide of type I collagen, CTX) and bone mineral density (BMD) compared with conventional resistance training programmes. Additionally, the effectiveness of walking with and without BFR was assessed. PubMed, Scopus, SPORTDiscus, Web of Science and Google Scholar databases were searched for articles based on eligibility criteria. Review Manager Version 5.4 was used for Metaanalysis. Physiotherapy Evidence Database (PEDro) was applied to assess the methodological quality of studies. 12 articles were included in the meta-analysis, with a total of 378 participants. Metaresults showed that compared with LI training, LI-BFR training induced greater increments in BALP