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Sprints Improve CVD Risk Factors in Youth

by Ryan Halvorson on Jun 14, 2011

Making News

Males concerned with fertility might want to step off the bike and supplement with other forms of physical activity. A report published in Fertility and Sterility (2011; 95 [3], 1025-30) linked frequent cycling and diminished sperm production. The study included 2,261 men who were attending Boston-area fertility clinics. The men completed a questionnaire on general health, medical history and physical activity. At the end of the study, the researchers found little correlation between generalized physical activity and sperm count. However, respondents who cycled at least five times per week presented with low sperm concentration and low total mobile sperm. But before you suggest to your male clients that they ditch the bike altogether,note that the study authors suggested further research was necessary to confirm a causal link.

IDEA Fitness Journal, Volume 8, Issue 7

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About the Author

Ryan Halvorson

Ryan Halvorson IDEA Author/Presenter

Ryan Halvorson is the chief content officer for Fit Scribe Media (www.fitscribemedia.com); contributing editor for IDEA Health & Fitness Association; director of group training at Bird Rock Fit in La Jolla, CA; a Master Instructor for Metabolic Effect and the creator of www.Fat2Fitin30.com, a lifestyle organization dedicated to finding ways to achieve improved fitness, nutrition and healthy living habits in 30 minutes or less. He is an internationally recognized speaker and has written for publications such as DETAILS and GQ.