Fig. 1
From: Do women reduce the gap to men in ultra-marathon running?
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40064-016-2326-y/MediaObjects/40064_2016_2326_Fig1_HTML.gif)
Observed distances according to age (a) and calendar year (b). Solid line smoothed curve. Dashed line cubic (a) and squared (b) fit
From: Do women reduce the gap to men in ultra-marathon running?
Observed distances according to age (a) and calendar year (b). Solid line smoothed curve. Dashed line cubic (a) and squared (b) fit