How To Perform A Watt Max Test

by Jesper Bondo Medhus on September 28, 2006

Achieve Better Results With Less Training

Watt max testing is a fast and accurate way to evaluate your training. I normally recommend serious riders to do a couple of these tests through the season.

Why you should do a watt max test

First of all, it is very motivating to follow progress in performance.

When you work hard to achieve a better performance, it is very satisfying to see that you are not vesting your time. Even for small increments, the test is very sensitive.

Secondly, it is possible to use the test results to modify your training program. This could be done either through optimizing your power outputs in the intervals or maybe a test will show that you need a recovery week. The optimal situation is to evaluate the test results with your cycling coach.

Watt max test

1. 15 min warm up
2. 100W workload – increase intensity with 10W every 30sec.
3. Keep cadence at min. 80rpm.
4. Ride until exhaustion
5. Notice the last completed power output. = P
6. Notice seconds spent at exhaustion power output = T

How to calculate the result from a watt max test
Watt max power = P + (T/30x10W)

Example: A rider gets exhausted after 15 seconds at 280W. Thus, his last completed power output is 270W. Calculation of Watt max power = 270W + (15/30 x 10W) = 275W

Jesper Bondo Medhus
About the Author: Jesper Bondo Medhus is the medical doctor and cycling coach helping cyclists to ride faster with less training. He has compiled a very successful e-book with his best training techniques for time limited athletes and has just released the final version of his 12-Week Winter Training Program.

{ 4 comments… read them below or add one }

Hamish Ferguson December 31, 2006 at 7:40 am

If you have CyclingPeaks you will also be able to see your peak 1min power for the workout. This is your Watt max Power.

Jesper Therkildsen June 1, 2007 at 5:30 pm

1min peak power shows your anaerobic performance. The test described above approximates what you can perform at maximum oxygen consumption.

john chiasson March 26, 2008 at 5:01 pm

hi, currently im averaging 200 watts per ten mile hill rides on a good gym stationary bike. im 54 and looking foward to the new riding season. im 180 lbs.and new at watt training, what numbers do i need to acheive to get most out of my riding as outlined. i put in a good effort durring the ten mile hill rides and i know its only ten miles but not all rides are hills for that time frame. any help would be great. thanks jack.

Jan Minnie October 21, 2010 at 10:51 am

Im stumped and need some advice from anyone. 8months of hard training. I have my VO2Max at 46( I am 48 YRS OLD) Resting heart rate 48 BPM. So you can say I am fit right? I just completed a 80km MTB race. Quite a tuff one. I rode for 3hours 26min at an average heart rate of 164 BPM! My Max is 176 BPM. I never felt good from beginning to end. Most of the guys in my age group beat me. Any advice??

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