Proposal of a Nutritional Quality Index (NQI) to Evaluate the Nutritional Supplementation of Sportspeople Palacín-Arce, Alba Monteagudo Sánchez, Celia Beas-Jiménez, Juan de Dios Olea Serrano, Fátima Mariscal Arcas, Miguel Sports Nutrients Diet Sports and exercise medicine Vitamins Food consumption Human performance Vitamin D Background: Numerous supplements are used by sportspeople. They are not always appropriate for the individual or the sports activity and may do more harm than good. Vitamin and mineral supplements are unnecessary if the energy intake is sufficient to maintain body weight and derives from a diet with an adequate variety of foods. The study objectives were to evaluate the main nutrients used as supplements in sports and to propose a nutritional quality index (NQI) that enables sportspeople to optimize their use of supplements and detect and remedy possible nutritional deficits. Material and Methods: A nutritional study was performed in 485 sportspeople recruited from Centros Andaluces de Medicina del Deporte, (CAMD). All completed socio-demographic, food frequency, and lifestyle questionnaires. The nutritional quality of their diet and need for supplementation were evaluated by scoring their dietary intake with and without supplementation, yielding two NQI scores (scales of 0-21 points) for each participant. Results: A superior mean NQI score was obtained when the supplements taken by participants were not included (16. 28 (SD of 3.52)) than when they were included (15.47 (SD: 3.08)), attributable to an excessive intake of some nutrients through supplementation. Conclusions: These results indicate that sportspeople with a varied and balanced diet do not need supplements, which appear to offer no performance benefits and may pose a health risk. 2015-06-03T07:17:11Z 2015-06-03T07:17:11Z 2015-05 info:eu-repo/semantics/article Palacín-Arce, A.; et al. Proposal of a Nutritional Quality Index (NQI) to Evaluate the Nutritional Supplementation of Sportspeople. Plos One, 10(5): e0125630 (2015). [http://hdl.handle.net/10481/36529] 1932-6203 http://hdl.handle.net/10481/36529 10.1371/journal.pone.0125630 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Atribución-NoComercial-SinDerivadas 3.0 España Public Library of Science (PLOS)