RT Journal Article T1 Criterion-Related Validity of Field-Based Fitness Tests in Adults: A Systematic Review A1 Castro-Piñero, Jose A1 Marin-Jimenez, Nuria A1 Fernandez-Santos, Jorge R. A1 Martin-Acosta, Fatima A1 Segura-Jimenez, Victor A1 Izquierdo-Gomez, Rocio A1 Ruiz, Jonatan R. A1 Cuenca-Garcia, Magdalena K1 Cardiorespiratory fitness K1 Muscular strength K1 Motor fitness and flexibility K1 Validation K1 Fitness testing K1 Adulthood K1 Capacidad cardiovascular K1 Fuerza muscular K1 Flexibilidad AB We comprehensively assessed the criterion-related validity of existing field-based fitness tests used to indicate adult health (19-64 years, with no known pathologies). The medical electronic databases MEDLINE (via PubMed) and Web of Science (all databases) were screened for studies published up to July 2020. Each original study's methodological quality was classified as high, low and very low, according to the number of participants, the description of the study population, statistical analysis and systematic reviews which were appraised via the AMSTAR rating scale. Three evidence levels were constructed (strong, moderate and limited evidence) according to the number of studies and the consistency of the findings. We identified 101 original studies (50 of high quality) and five systematic reviews examining the criterion-related validity of field-based fitness tests in adults. Strong evidence indicated that the 20 m shuttle run, 1.5-mile, 12 min run/walk, YMCA step, 2 km walk and 6 min walk test are valid for estimating cardiorespiratory fitness; the handgrip strength test is valid for assessing hand maximal isometric strength; and the Biering-Sørensen test to evaluate the endurance strength of hip and back muscles; however, the sit-and reach test, and its different versions, and the toe-to-touch test are not valid for assessing hamstring and lower back flexibility. We found moderate evidence supporting that the 20 m square shuttle run test is a valid test for estimating cardiorespiratory fitness. Other field-based fitness tests presented limited evidence, mainly due to few studies. We developed an evidence-based proposal of the most valid field-based fitness tests in healthy adults aged 19-64 years old. PB MDPI YR 2021 FD 2021-08-23 LK http://hdl.handle.net/10668/4336 UL http://hdl.handle.net/10668/4336 LA en NO Castro-Piñero J, Marin-Jimenez N, Fernandez-Santos JR, Martin-Acosta F, Segura-Jimenez V, Izquierdo-Gomez R, et al. Criterion-Related Validity of Field-Based Fitness Tests in Adults: A Systematic Review. J Clin Med. 2021 Aug 23;10(16):3743 DS RISalud RD Feb 18, 2025