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the claim

Marathon training causes weight gain in recreational runners.

the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Marathon training causes weight gain in recreational runners?

Partly. The retrieved items do not directly test whether marathon training causes weight gain in recreational runners. One study notes weight gain during a marathon race linked to fluid intake, while two others report training intensity and body composition relationships that do not establish the claim.

Verdict: CONTESTED PARTIAL · 1 source for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
Hyponatremia among runners in the Boston Marathon.
2005
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Almond, C. S. D., Shin, A. Y., Fortescue, E. B., Mannix, R. C., Wypij, D., Binstadt, B. A., Duncan, C. N., Olson, D. P., Salerno, A. E., Newburger, J. W., & Greenes, D. S. (2005). Hyponatremia among runners in the Boston Marathon.. doi.org. https://doi.org/10.1056/NEJMoa043901

Evidence against · 2
Predictor variables for half marathon race time in recreational female runners
2011
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Predictor variables for half marathon race time in recreational female runners. (2011). hal.science. https://doi.org/10.1590/S1807-59322011000200018

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More against · 1
Personal Best Marathon Time and Longest Training Run, Not Anthropometry, Predict Performance In Recreational 24-hour Ultrarunners
2011
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Personal Best Marathon Time and Longest Training Run, Not Anthropometry, Predict Performance In Recreational 24-hour Ultrarunners. (2011). hal.science. https://doi.org/10.1519/JSC.0b013e3181f6b0c7

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