Is The IAWA Age Adjustment Fair??

by Al Myers

A topic that will be discussed at this year’s World Meeting at the World Championship will be the age adjustment. This was brought up last year and an IAWA committee was formed to investigate it and present a recommendation to the meeting this year.  The membership will be called on to vote on this, whether to make a change or keep things as they are.

This subject is very interesting to me as I hear arguments from both sides. Young lifters think the older lifters get too much adjustment, while the older lifters don’t feel like they get enough.  Formulas are always hard to develop and make completely fair as there are so many variables to consider.

I did a study of my own on three lifts.  I want to emphasize THIS IS NOT THE IAWA STUDY. It is merely a study which I did to satisfy my own curiosity on this subject. I think it is important that I have this information in hand in order to make an informative vote. I just collected some numbers and did a few calculations.  I am not doing this to try to “sway votes” one way or the other.  I just wanted to see what “the numbers” really show in regard to decreased lifting performance with age.

Study of the Age Adjustment


Objective:  To collect information from age group USAWA records, make USAWA and IAWA(UK) age corrections for comparison, and determine what correction for age group records are needed in order for the age group records to be the same as the overall records.

Design: I collected information from age group USAWA records in three lifts – Bench Press Feet in Air, Hack Lift, and the Zercher Lift. I picked these three lifts for these reasons: they  evaluate all areas of overall strength -pressing, pulling and squatting, and the data base for these records was full in regard to records in all weight classes and age divisions. I calculated an average of all weight class records within an age group so bodyweight adjustments would not be a factor in this study.  I utilized this formula to determine what correction is needed in order to adjust to the average of the Overall Record.

Correction Needed = (Overall Record – Age group Record) / Age Group Record


Assumptions: I used the USAWA and IAWA(UK) age correction for the top age of each division despite the record may have been set a younger age within the division. The record list does not provide that data.

Results:
All Records listed in pounds.

Bench Press Feet in Air


Age Group
Overall Record
USAWA Correction
IAWA(UK) Correction
Correction Needed
Overall 353 353 353 0%
40-44 280 294 305 26.1%
45-49 268 295 306 31.7%
50-54 246 283 293 43.5%
55-59 228 274 274 54.8%
60-64 209 261 270 68.9%
65-69 194 252 268 82.0%
70-74 167 225 247 111.4%
75-79 141 197 223 150.4%
80-84 116 168 195 204.3%

Hack Lift


Age Group
Overall Record
USAWA Correction
IAWA(UK) Correction
Correction Needed
Overall 538 538 538 0%
40-44 465 488 507 15.7%
45-49 401 441 457 34.2%
50-54 382 439 455 40.8%
55-59 330 396 409 63.0%
60-64 320 400 413 68.1%
65-69 321 417 443 67.6%
70-74 304 410 450 77.0%
75-79 242 339 382 122.3%
80-84 168 244 282 220.2%

Zercher Lift


Age Group
Overall Record
USAWA Correction
IAWA(UK) Correction
Correction Needed
Overall 452 452 452 0%
40-44 372 391 405 21.5%
45-49 352 387 401 28.4%
50-54 339 390 403 33.3%
55-59 331 397 410 36.6%
60-64 296 370 382 52.7%
65-69 280 364 386 61.4%
70-74 246 332 364 83.7%
75-79 204 286 322 121.6%
80-84 180 261 302 151.1%



Summary:

Age Group
USAWA Correction
IAWA(UK) Correction
Data Range
Data Average
Overall 0% 0% 0% 0%
40-44 5% 9% 15.7% – 26.1% 21.1%
45-49 10% 14% 28.4% – 34.2%
31.4%
50-54 15% 19% 33.3% – 43.5%
39.2%
55-59 20% 24% 36.6% – 63.0%
51.5%
60-64 25% 29% 52.7% – 68.9%
63.2%
65-69 30% 38% 61.4% – 82.0%
70.3%
70-74
35% 48% 77.0% – 111.4%
90.7%
75-79 40% 58% 121.6% – 150.4%
131.4%
80-84 45% 68% 151.1% – 220.2%
191.8%

As you can clearly see, the USAWA and the IAWA(UK) age corrections do not keep up with the performance decrease with increased age for these three lifts that where selected from the USAWA Record List.  No calculations were done to determine the statistical significance of this study.

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