Concept2 Training Guide
Appendix - Weight Adjustment Factor
<< Pace GuideContributors >>When using an Indoor Rower the results that you can achieve are dependent on the power output you can maintain for the distance or time required. Heavyweight rowers are able to maintain a higher level of power output due to their increased weight. In order to enable you to compare your time/distance to someone of a different weight we have included a weight correction formula.
The formula for weight correction is:
Using the Weight Adjustment Factor
For timed pieces: Corrected time = actual time x WAF
For distance pieces: Corrected distance = actual distance/WAF
| Weight Adjustment Factors | |||||||
|---|---|---|---|---|---|---|---|
| Weight | Factor | Weight | Factor | Weight | Factor | Weight | Factor |
| 50.0 kgs | 0.908 | 67.5 kgs | 0.971 | 82.5 kgs | 1.015 | 97.5 kgs | 1.053 |
| 52.5 kgs | 0.918 | 70.0 kgs | 0.979 | 85.0 kgs | 1.022 | 100.0 kgs | 1.059 |
| 57.5 kgs | 0.937 | 72.5 kgs | 0.987 | 87.5 kgs | 1.028 | 102.5 kgs | 1.065 |
| 60.5 kgs | 0.946 | 75.0 kgs | 0.994 | 90.0 kgs | 1.035 | 105.0 kgs | 1.071 |
| 62.5 kgs | 0.954 | 77.5 kgs | 1.001 | 92.5 kgs | 1.041 | 107.5 kgs | 1.076 |
| 65.0 kgs | 0.963 | 80.0 kgs | 1.008 | 95.0 kgs | 1.047 | 110.0 kgs | 1.082 |
Alternative WAF
There is another weight adjustment factor that is used on the American Concept2 website, in the formula above substitue 77.27 with 122.73:
"Originally, we used 77.27 to normalize the weight adjusted scores because 77.27kg (170lb) was approximately the average weight of all rowers. But about a year ago we realized that by using a different number to normalize the weight adjusted score we could give the adjusted score more meaning. By using 122.73, the weight adjusted score becomes a pretty good estimate of a person?s potential speed in an eight. To put it another way, if the average adjusted score using this formula of the 8 rowers in an eight is 6:00, then that boat should be capable of a 6:00 2k race on the water?given perfect conditions and near perfect rowing effectiveness (nobody rows perfectly). We believe that this will be approximately true for all types of crews."
This isn't so relevant for the average 'indoor rower' and so not generally used result adjustment, but maybe an interesting comparison for some.
