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Smith, D. ., King, R. ., Duckworth, L. ., Sutton, L. ., Preston, T. ., O’Hara, J. ., & Jones, B. . (2018). Energy expenditure of rugby players during a 14-day in-season period, measured using doubly labelled water. European Journal of Applied Physiology. https://doi.org/10.1007/s00421-018-3804-4 (Original work published 2018)