I’ve been surprised at how little is vested in resolving male infertility when it comes to, otherwise healthy, endurance athletes and cyclists in particular. When I have tried to discuss the topic (a lot of road cycling) with our physicians, they never had much to offer. Its just the same old low-hanging fruit of diet, alcohol and stress.
So, what’s a scientist to do? Well, grab my browser and head to the journal databases.
After a slow start (gotta find the right vein of conversation) I settled on these 5 articles. There are likely pay-walls standing between you and the full text, so as to read for yourself. You could send these to your physician and ask for comment, but my personal, non-medico surmisal is: 1) ride less than 5 hrs a week, 2) keep 'em cool. Temperature being prominent as it is significant and affects all of us.
An important note, the spermatogenosis process is around 64 days. So, alterations would probably need to occur of a roughly equivalent timeframe, all, of course, depending at which point in the cycle things are falling down. So, a timed 3-day lay off we might think of first, probably won’t suffice.
Gebreegziabher, Y., Marcos, E., McKinon, W., & Rogers, G. (2004). Sperm characteristics of endurance trained cyclists. International Journal of Sports Medicine, 25(4), 247–251. http://doi.org/10.1055/s-2004-819933Ivell, R. (2007). Lifestyle impact and the biology of the human scrotum. Reproductive Biology and Endocrinology, 5(1), 15. http://doi.org/10.1186/1477-7827-5-15Jóźków, P., & Rossato, M. (2016). The Impact of Intense Exercise on Semen Quality. American Journal of Men’s Health, 1557988316669045. http://doi.org/...177/1557988316669045Kipandula, W., & Lampiao, F. (2015). Semen profiles of young men involved as bicycle taxi cyclists in Mangochi District, Malawi: A case-control study. Malawi Medical Journal : the Journal of Medical Association of Malawi, 27(4), 151–153.Sharpe, R. M. (2010). Environmental/lifestyle effects on spermatogenesis. Philosophical Transactions of the Royal Society of London B: Biological Sciences, 365(1546), 1697–1712. http://doi.org/10.1098/rstb.2009.0206