Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes

F.C. Wardenaar; J. Steennis; I.J.M. Geelen; M.R. Mensink; R.F. Witkamp; J.H.M. de Vries

doi:10.1017/S0007114515003839

Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes

F.C. Wardenaar, J. Steennis, I.J.M. Geelen, M.R. Mensink, R.F. Witkamp, J.H.M. de Vries

Research output: Contribution to journal › Article › Academic › peer-review

14 Citations (Scopus)

Abstract

Information on dietary composition is vitally important for elite athletes to optimise their performance and recovery, which requires valid tools. The aim of the present study was to investigate the validity of assessing protein intake using three web-based 24-h recalls and questionnaires, by comparing these with three urinary N excretions on the same day. A total of forty-seven Dutch elite top athletes, both disabled and non-disabled, aged between 18 and 35 years, with a BMI of 17·5–31 kg/m2, exercising >12 h/week were recruited. Estimated mean dietary protein intake was 109·6 (SD 33·0) g/d by recalls and questionnaires v. 141·3 (SD 38·2) g/d based on N excretions in urine; the difference was 25·5 (SD 21·3) % between the methods (P

Original language	English
Pages (from-to)	2083-2092
Journal	British Journal of Nutrition
Volume	114
Issue number	12
DOIs	https://doi.org/10.1017/S0007114515003839
Publication status	Published - 2015

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Wardenaar, F. C., Steennis, J., Geelen, I. J. M., Mensink, M. R., Witkamp, R. F., & de Vries, J. H. M. (2015). Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes. British Journal of Nutrition, 114(12), 2083-2092. https://doi.org/10.1017/S0007114515003839

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title = "Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes",

abstract = "Information on dietary composition is vitally important for elite athletes to optimise their performance and recovery, which requires valid tools. The aim of the present study was to investigate the validity of assessing protein intake using three web-based 24-h recalls and questionnaires, by comparing these with three urinary N excretions on the same day. A total of forty-seven Dutch elite top athletes, both disabled and non-disabled, aged between 18 and 35 years, with a BMI of 17·5–31 kg/m2, exercising >12 h/week were recruited. Estimated mean dietary protein intake was 109·6 (SD 33·0) g/d by recalls and questionnaires v. 141·3 (SD 38·2) g/d based on N excretions in urine; the difference was 25·5 (SD 21·3) % between the methods (P",

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Wardenaar, FC, Steennis, J, Geelen, IJM, Mensink, MR , Witkamp, RF & de Vries, JHM 2015, 'Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes', British Journal of Nutrition, vol. 114, no. 12, pp. 2083-2092. https://doi.org/10.1017/S0007114515003839

Validation of web-based, multiple 24-h recalls combined with nutritional supplement intake questionnaires against nitrogen excretions to determine protein intake in Dutch elite athletes. / Wardenaar, F.C.; Steennis, J.; Geelen, I.J.M.; Mensink, M.R.; Witkamp, R.F.; de Vries, J.H.M.

In: British Journal of Nutrition, Vol. 114, No. 12, 2015, p. 2083-2092.

Research output: Contribution to journal › Article › Academic › peer-review

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