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Methodology of dietary assessment in athletes: concepts and pitfalls. Curr Opin Clin Nutr Metab Care 6: 539-549.","DOI":"10.1097\/00075197-200309000-00007"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2) Ishikawa-Takata K, Okamoto K, Taguchi M. 2021. Development and validation of a food frequency questionnaire for Japanese athletes (FFQJA). J Int Soc Sports Nutr 18: 34.","DOI":"10.1186\/s12970-021-00433-5"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3) Livingstone MB, Black AE. 2003. Markers of the validity of reported energy intake. J Nutr 133 (Suppl 3): 895S-920S.","DOI":"10.1093\/jn\/133.3.895S"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4) Fudge BW, Westerterp KR, Kiplamai FK, Onywera VO, Boit MK, Kayser B, Pitsiladis YP. 2006. Evidence of negative energy balance using doubly labelled water in elite Kenyan endurance runners prior to competition. 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A standard calculation methodology for human doubly labeled water studies. Cell Rep Med 2: 100203.","DOI":"10.1016\/j.xcrm.2021.100203"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9) Weir JB. 1949. New methods for calculating metabolic rate with special reference to protein metabolism. J Physiol 109: 1-9.","DOI":"10.1113\/jphysiol.1949.sp004363"},{"key":"10","unstructured":"10) Ministry of Health, Labour and Welfare, Japan. The National Health and Nutrition Survey. https:\/\/www.mhlw.go.jp\/bunya\/kenkou\/kenkou_eiyou_chousa.html (accessed 2026.3.24)."},{"key":"11","unstructured":"11) Black AE, Prentice AM, Coward WA. 1986. Use of food quotients to predict respiratory quotients for the doubly-labelled water method of measuring energy expenditure. Hum Nutr Clin Nutr 40: 381-391."},{"key":"12","doi-asserted-by":"crossref","unstructured":"12) Lombard MJ, Steyn NP, Charlton KE, Senekal M. 2015. Application and interpretation of multiple statistical tests to evaluate validity of dietary intake assessment methods. Nutr J 14: 40.","DOI":"10.1186\/s12937-015-0027-y"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13) Yoshida A, Ishikawa-Takata K, Bessho K, Taguchi M, Tatsuta W, Totani M, Higuchi M. 2012. The factors associated with underreporting of energy intake estimated by food records in female athletes. The Japanese Journal of Nutrition and Dietetics 70: 305-315.","DOI":"10.5264\/eiyogakuzashi.70.305"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14) Mountjoy M, Ackerman KE, Bailey DM, Burke LM, Constantini N, Hackney AC, Heikura IA, Melin A, Pensgaard AM, Stellingwerff T, Sundgot-Borgen JK, Torstveit MK, Jacobsen AU, Verhagen E, Budgett R, Engebretsen L, Erdener U. 2023. 2023 International Olympic Committee\u2019s (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs). Br J Sports Med 57: 1073-1097.","DOI":"10.1136\/bjsports-2023-106994"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15) Thurber C, Dugas LR, Ocobock C, Carlson B, Speakman JR, Pontzer H. 2019. Extreme events reveal an alimentary limit on sustained maximal human energy expenditure. Sci Adv 5: eaaw0341.","DOI":"10.1126\/sciadv.aaw0341"},{"key":"16","unstructured":"16) Kinoshita N, Suzaki R, Ishikawa-Takata K. 2025. Total energy expenditure of collegiate male sprinters during the off-season training period: a study using doubly labeled water. Journal of Japanese Society for Clinical Sports Medicine 33: 489-493."},{"key":"17","doi-asserted-by":"crossref","unstructured":"17) McKenzie BL, Coyle DH, Santos JA, Burrows T, Rosewarne E, Peters SAE, Carcel C, Jaacks LM, Norton R, Collins CE, Woodward M, Webster J. 2021. Investigating sex differences in the accuracy of dietary assessment methods to measure energy intake in adults: a systematic review and meta-analysis. 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