GETTING TOUGHER EACH YEAR |
I won the 65-69 age group with a 5:38, but slower than last years 5:33 on an easier weather day. So, what is happening?
Well, I'm just getting older. It's tough to compete at the "old" end of the "older" age groups. In a prior post I compared the relative performance of the best age-groupers as a function of age. I did this utilizing the USAT ranking system, and the USAT statistics for 2014 reaffirmed the general trend of an accelerating decline after age 40. To further smooth the recent 2014 USAT statistics, I averaged the scores of the top 5 ranked athletes in each age group. The results were as shown below:
AGE-GROUP MALE FEMALE(1)
20-24 104.3 102.0
25-29 104.6 104.1
30-34 105.3 103.1
35-39 105.8 103.7
40-44 103.9 101.7
45-49 101.2 99.4
50-54 97.9 99.6
55-59 93.8 94.8
60-64 90.2 85.9
65-69 84.0 79.4
70-74 76.2 72.9
75-79 66.8 (2)
(1) Females are given an extra 10 points in the USAT ranking methodology
to account for gender
(2) Insufficient data
Since in the older age groups its mostly the younger bunch that finish in the top 5, you could reasonably calculate that, for example, a 65 year old male should expect to be approximately 7% slower than a 60 year old [(90.2-84.0)/90.2 = 6.9%]. If you assume a linear degradation within age group with age, you can make this comparison and calculate an age-adjusted index for any age athlete. For example, a 69 year old male (me) would have an index of 77.8 [ 76.2+(76.2 - 84.0)/5 = 77.8]. You can age-handicap your buddies!!!! You can race for who buys the beers!!!!
THE RACE: Drove up from Scottsdale with my younger (66 yr old) friend from Houston who was interested in the qualifying slot for 70.3 Worlds to be held August 30 in Austria. We both achieved our goals, me to gauge my fitness level and friend George Rux got the slot on a roll down. The swim
GEORGE RUX CELEBRATING |
ST GEORGE 70.3 VOLUNTEER CEREMONY |
MY AGE-ADJUSTED FINISH: Since I spent the front end of this blog on calculating age-based indexes, how should you apply it to see who buys the beers? Lets compare me to the overall Amateur winner on an age-adjusted basis? The Amateur winner was Ken Peterson, M30-34, time 4:12, Age Index 105.3. This would give him an age-adjusted time of 4:25:24 (4:12 x 1.053 = 265.4 = 4:25:24). My time was 5:38, with an index of 77.8, my age adjusted time would have been 4:23 (5:38 x .778 = 263 = 4:23). I like this indexing system. Don't know you Ken, but next time lets race for beers????
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