“…Most studies primarily focused on the effects of NAC supplementation on GSH and GSH-related biomarkers in muscle [13,80,91,94] and plasma [68][69][70]74,82,83,85,90,91,98,99,101], and total or reduced NAC in muscle [17,101] and plasma [17,74,88]. However, it is challenging to comment on the relationship between NAC and glutathione availability, as studies differ in dose [17,83,93,98,99], exercise type [68,69,83,91], and training status [83,91,98,101]. It allows us to compare the results of the study in the case of studies with similar populations with similar NAC dosage and exercise protocol, thus shedding light on our interpretation.…”