The search for the primary studies was carried through four databases: APA PsycInfo by ProQuest, PubMed by US National Center for Biotechnology Information, Web of Science Core Collection by Clarivate, and SPORTDiscus by EBSCOHost.The search strategy followed the Peer Review of Electronic Search Strategies (PRESS)(McGowan et al., 2016) and PRISMA for Searching (PRISMA-S) guidelines (Rethlefsen et al., 2021), and consisted of three groups of search terms referring to: a) sports and physical activity, b) wireless/wearable technologies and mobile applications, and c) training load or stress-recovery state. We also added a fourth group of terms preceded by the boolean operator NOT to improve the specificity of the search strategy. The search was performed on the 6th of April 2025 and was limited by time period (2012-2025) and publication language (English, Spanish).