*2.1. Literature Search*

The search was performed in the MEDLINE (via Pubmed) and Web of Science electronic databases from inception until July 2020. We screened studies conducted for criterionrelated validity in adults, where one or more field-based fitness tests were carried out. Thus, the keywords selected were based on terms related to "criterion-related validity", "adults" and "field-based fitness test". The search syntax was adapted to the indexing terms of each database (see Supplementary Material 1). Searching was restricted to articles published in humans and the English or Spanish languages.
