There was an error published in J. Exp. Biol. (2019) 222, jeb213058 (doi:10.1242/jeb.213058).

In Materials and Methods, ‘Experimental design’, the number of strides was incorrectly shown as 137.087±9.929 (mean±s.d.). The correct value is 137,087±9929 (mean±s.d.).

Both the online full-text and PDF versions have been updated.

We apologise to the authors and readers for any inconvenience this may have caused.