Changes in Muscle Oxygen Saturation Measured Using Wireless Near-Infrared Spectroscopy in Resistance Training: A Systematic Review Miranda Fuentes, Claudia Chirosa Ríos, Luis Javier Guisado Requena, Isabel María Delgado Floody, Pedro Jerez Mayorga, Daniel Alejandro Resistance training Tissue saturation Hemoglobin This work was supported by DGI-University Andres Bello, No DI-6-20/CBC. This paper will be part of Claudia Miranda-Fuentes’ Doctoral Thesis performed in the Biomedicine Doctorate Program of the University of Granada. Background: This study aimed to report, through a systematic review of the literature, the baseline and final reference values obtained by near-infrared spectroscopy (NIRS) of muscle oxygen saturation (SmO2) during resistance training in healthy adults. Methods: Original research studies were searched from four databases (Scopus, PubMed, WOS, and SportDiscus). Subsequently, three independent reviewers screened the titles and abstracts, followed by full-text reviews to assess the studies' eligibility. Results: Four studies met the inclusion criteria, data were extracted and methodological quality was assessed using the Downs and Black scale. Muscle oxygen saturation (% SmO2) during reported muscle strength exercises showed a decreasing trend after a muscle strength protocol; that is, before the protocol (range = 68.07-77.9%) and after (range = 9.50-46.09%). Conclusions: The trend of the SmO2 variables is to decrease after a muscle strength protocol. Studies are lacking that allow expanding the use of these devices during this type of training. 2021-05-27T08:57:32Z 2021-05-27T08:57:32Z 2021-04-18 info:eu-repo/semantics/article Miranda-Fuentes, C.; Chirosa-Ríos, L.J.; Guisado-Requena, I.M.; Delgado-Floody, P.; Jerez-Mayorga, D. Changes in Muscle Oxygen Saturation Measured Using Wireless Near-Infrared Spectroscopy in Resistance Training: A Systematic Review. Int. J. Environ. Res. Public Health 2021, 18, 4293. [https://doi.org/10.3390/ijerph18084293] http://hdl.handle.net/10481/68773 10.3390/ijerph18084293 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI