rss
Br J Sports Med 34:474 doi:10.1136/bjsm.34.6.474-a
  • Letter to the editor

Hormones, offspring sex ratios, and weekly training distances of male runners: implications for overtraining

Table 1

Numbers of sons and daughters sired by male runners, by their weekly training mileage around the time of conception (data of Crawford et al2)

Weekly training mileage Sons Daughters
Nil 112 69
0–30 50 30
30–50 46 70
50–70 35 25
70+ 19 17

This Article

Latest from BJSM blog

Latest from BJSM blog

Register for free content


Free sample
This recent issue is free to all users to allow everyone the opportunity to see the full scope and typical content of BJSM.
View free sample issue >>

Don't forget to sign up for content alerts so you keep up to date with all the articles as they are published.


  • BJSM blog now on Kindle