Correction: Water intake after dehydration makes muscles more susceptible to cramp but electrolytes reverse that effect
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Lau WY, Kato H, Nosaka K. Water intake after dehydration makes muscles more susceptible to cramp but electrolytes reverse that effect. *BMJ Open Sport & Exercise Medicine* 2019;5:e000478. doi: 10.1136/bmjsem-2018-000478

The authors want to alert readers to the following error identified in the published version.

Under the Experimental design section (paragraph 2, line 1), due to incorrect electrolyte value, the text has been updated as below:

OS-1 contains sodium (1150 mg/L), potassium (780 mg/L), magnesium (24 mg/L), chloride (1770 mg/L), glucose (18 000 mg/L) and others (eg, phosphorus).

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