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    We have been designated an essential business to make sure people have an avenue to get out and exercise...Yesterday, Denver and Boulder issued orders asking all residents to stay at home unless performing essential activities. The orders include bike shops as an essential business that can stay open to provide support for Coloradans and visitors during the COVID-19 outbreak, and encourage bicycling as a form of outdoor activity.

    STORE HOURS: Tuesdayto Saturday 10am to 6pm  :  CLOSED SUNDAY-MONDAY
    Limit to 6 People in the Store - SERVICE ONLY in back of Store

    CORONAVIRUS
    Derby Bicycle is ready for the CV issues at hand and currently understands the magnitude for all concerned. As many people will be at home during this time, Derby Bicycle will continue to be open and supply the biking community with service and bicycles. We understand that many people will need to get out and exercise on their bikes and that is why DBC will be open as well as keeping up the standard of sanitizing. Be aware that we have a stock of bikes but that many of the manufacturers will not be delivering for several weeks. Call if you have any questions..Thank You from all of us and be safe during this time.

    Altitude

    pikes-peakQuite simply, the body freaks out when first exposed to high places: Your brain tells you to breathe more and deeper. Your heart rate increases. But within 24 to 48 hours the level of natural EPO—the hormone that regulates the volume and number of red blood cells—starts to rise, and in time this leads to more red blood cells and acclimatization. Andrew Luks, a pulmonary specialist at the University of Washington with expertise in high-altitude medicine, elaborates.

    Expect Some Discomfort You might experience a combination of headache, poor sleep, fatigue, and dizziness. That’s acute mountain sickness, the most common malady to strike people who go from sea level to altitude quickly, Luks says. (This usually subsides over time, but if doesn’t, you need to descend.) The good news? It probably won’t get worse. Some who are rapidly exposed to high altitudes suffer from high-altitude pulmonary edema (HAPE), a buildup of fluid in the lungs. But during 30 years of research, the U.S. Army Pikes Peak Research Laboratory has had to evacuate only about 1 percent of its volunteers with suspected HAPE.

    The Longer You Can Acclimatize, The Better In a 2007 study, elite cyclists were brought from sea level to 7,700 feet and tested weekly on the bike. The first day, their time to exhaustion decreased by 27 percent compared with sea level. On Day 7, it had dropped by 21 percent. By Day 21, it was 16. But, says Luks, adaptation can only help so much: “Above a certain altitude”—sometimes as low as 5,000 feet—”you won’t be able to gain back your sea-level performance, no matter how long you’ve acclimated.”

    You Can’t Fool Your Body Some endurance athletes believe that if you can’t arrive a week in advance, the next best thing is to land the day before. Not true, says Charles Fulco, of the Army Research Institute of Environmental Medicine. The reason lies in basic human physiology. The body compensates for the drop in barometic pressure by working harder to increase blood volume (by having the heart pump more blood, faster). But the body can compensate only so much before reaching VO2 max. So the same task (say, riding at 10 mph) will be performed at a higher percentage of VO2 max at altitude—meaning it will feel hardest the first day and gradually less hard the more you adjust.

    New Sensation Luks believes part of the value of arriving well in advance of your event is that you can gain familiarity with the discomfort of riding at altitude. “It will be safer,” Luks says, “and it will help you adjust to the sensation.” Again: If you can spend a week of vacation time at altitude right before your ride, you’re almost certain to see a better result.

    By Evelyn Spence  from Bicycling.com