Jim Parker's blog

Jim Parker's posts

Healthy sperm... reason #24 to get a Cruzbike
Submitted by Jim Parker on Fri, 10/12/2010 - 8:00
A new study[1] published in the journal “Fertility and Steriltiy” examined  sperm count and sperm health (based on the motility of the sperm) of over 2,200 men who gave a sample of sperm to a Boston fertility clinic. Men who reported bicycling more than 5 hours per week were twice a
Jim Parker's blogRead more
Proposal for scientific comparison of bicycle hill-climbing performance
Submitted by Jim Parker on Fri, 26/11/2010 - 8:00
Many Cruzbike owners have made the observation that they climb faster on a Cruzbike vs. other rear wheel drive (RWD) recumbent bicycles. Clearly, there are complex biomechanics involving the upper and lower body when hill climbing on a regular road bike (watch this video of Lance Armstrong climbing
Jim Parker's blogRead more
Was it really a world record?
Submitted by Jim Parker on Sat, 02/10/2010 - 17:27
Some people have asked whether it’s fair to call Maria’s records in the 100 mile, 200 mile, and 12-hour road events  “world" records. When we began researching what it would take to set a “world record” in solo long-distance cycling, we found that there is
Jim Parker's blog1 commentRead more
Another World Record
Submitted by Jim Parker on Fri, 01/10/2010 - 21:13
A new 100 mile world record under the auspices of the UMCA for women's recumbent or upright bike was set on October 1, 2010 by Maria Parker on the pre-production Vendetta prototype. Pending certification by the UMCA and World Recumbent Record Association,  Maria Parker, my lovely wife, has
Jim Parker's blog10 commentsRead more
The steepest hill I've climbed: 24.6%
Submitted by Jim Parker on Tue, 03/08/2010 - 20:12
Maria and I live in a very flat part of North Carolina and seldom get a chance to ride up steep hills. Last week Maria's family held a reunion at Hungry Mother State Park-  a very hilly part of Virginia. I brought a Sofrider (16-speed) and a Quest 559 (27 speed).  Our cabin was located
Jim Parker's blog1 commentRead more