Over the past month or so we're published multiple posts related to the accuracy and consistency of the indoor cycles in our studios. Gene Nacey chronicled his experiments toward finding a method of handicapping his cycles, in the hope of addressing the differences in wattage he is seeing between bikes and my series on the results from our survey both pointed to the same conclusion; Indoor Cycle manufactures have work to do to ensure a level of consistency that will give both Instructors and participants the confidence we need to really use power as a training tool in our classes.
Last week at IHRSA, Amy and I had the chance to sit down with Keiser founder Dennis Keiser, before he formally announced that his engineering team had secured the first European EN-ISO 20957-1 accreditation for an Indoor Cycle that displays power - the new Keiser M3i.
From the Keiser press release:
Keiser Earns Accuracy Acclaim!
The Keiser M3 group fitness cycle has been the first product of its kind to receive prestigious EN-ISO 20957-1 recognition for the accuracy of its power display.
“This is a big step. Our industry needs to validate the numbers that our users are seeing,” said Keiser founder and President Dennis Keiser. “This gives our customers a level of comfort at what they are seeing in our display.” The accuracy certification represents the first time that TUV Product Services, a European safety organization, has tested for accuracy in a data reporting system on an indoor group exercise cycle. To achieve EN-ISO 20957-1 recognition, TUV requires a group fitness cycle consistently perform within plus or minus 10% of accuracy. “To be the first in our industry to receive this is a great achievement and an honor,” expressed Keiser Vice President-Europe Alastair Watson. “It is important to everyone at Keiser that our customers know they are getting the best bike in the industry and the most accurate reporting system as this designation confirms.” Keiser has been the undisputed industry leader, the first to employ magnetic resistance, introduce power, and now the first to receive accuracy certification. “It”™s very easy for someone to talk about the accuracy of power but this test is very difficult. To achieve what we have is significant,” explained Dennis Keiser. “We have been the leader and intend to remain the leader in indoor group cycling.”
Dennis explained to us that the primary focus of EN-ISO 20957-1 (ISO is the International Organization for Standardization) is safety. Passing is required to sell new fitness equipment in many European countries. The certification of any power displayed is a sub-category of EN-ISO 20957-1 that's been initiated to bring more consistency to our industry - something Dennis expressed is long overdue and I completely agree.
Now while a +-10% accuracy may not sound all that impressive in these days of super accurate (and expensive) bicycle power meters, that's the maximum allowable variation from any randomly sampled production M3i. To achieve that level of accuracy, while making allowances for production tolerances, Keiser's engineers designed the M3i to have single digit accuracy.
Upgrade for older Keiser M3s
So why would this be important to a club or studio who own the older versions of the Keiser M3? My understanding is that Keiser will be offering retrofit kits for older M3's. By replacing the console, a small circuit board near the magnet carrier and the magnet carrier you'll be able to bring your M3s up to this new certification's level of accuracy. Included with the kit will be the new power console that incorporates BLE Bluetooth Low Energy which will easily pair with an iPhone/Android phone + work with the new Keiser GX group exercise projection system for on-screen power and heart rate display in class. More about that soon.
Both are supposed to be available later this summer - I'll be posting the details on cost and how to order once it's been finalized.
- ICI/PRO Podcast 299 – Power and your Playlist… don't make it too hard - June 5, 2023
- Please come back to my class! - May 30, 2023
- My Life Time Instructor Teach Back - May 24, 2023