Correction: Energy expenditure in caving

The images for Figs 3 and 5 are incorrectly switched. The image that appears as Fig 3 should be Fig 5, and the image that appears as Fig 5 should be Fig 3. The figure captions appear in the correct order.

Fig 3. Individual bioelectrical vectors (specific BIVA).

Individual bioelectrical vectors projected on the Italo-Spanish reference [33]. Men on the left, women on the right.

Fig 5. Mean bioelectrical vectors (classic BIVA).

Mean bioelectrical values projected on the Italian reference [32]. Men on the left, women on the right.