I'm working on a piece about obesity and the biological factors that can make sustaining significant wt loss so hard for so many people. The benefits of exercise, however, are not limited to the lean and abdominally chiseled! Even if swimming only helps you shed a couple pounds, or none at all, getting in shape can make a huge difference in life quality.
I have been playing around with a motivational strategy to encourage more people to compete regardless of their weight. To wit, my still-in-the-works concept, Jim's Weight-Weighted 50 SCY Free. This is likely to require substantial refinement (suggestions welcome!)
But as of now, my new metric is the soul of simplicity.
Just take your current season's best 50 SCY freestyle time and and divide this by your BMI, or body mass index. I am using the 50 SCY free because almost all of us can come up with this. You can also easily calculate your BMI by feeding your current height and weight in here (no cheating, please!): nhlbisupport.com/.../bminojs.htm
Clearly there are flaws in my metric. The first to jump out at me is that women's times, on average, tend to be a bit slower, especially on sprints, so we need to correct for this.
The current SCM world record (no world records for yards) for the 50 free is about 3 seconds faster for men than women. For purposes of my poll, women who agree to participate should subtract 3 seconds from their current season best 50!
I am, also arbitrarily, designating 1.0 as "par"--and your goal is to get your number as low as you can.
The Weight-Weighted Metric Exemplified
For example: take four men--
A) one with a BMI of 22, which places him or her squarely in the ranks of the lean
B) one with a BMI of 25, which puts him or her right on the cusp of an overweight categorization
C) one with a BMI of 30 (beginning of obesity )
D) one with a BMI of 33 (beginning of morbid obesity)
Now assume all four of these men can swim a 50 SCY freestyle in exactly 30 seconds.
Person A's "Jim's Weight-Weighted 50" would be 30/22 or 1.36
Person B earns a better 1.2
Person C achieves an even better 1.0
and Person D wins the day with a magnificent .91
If you recalculate these values for women, i.e., same BMIs but subtracting 3 seconds from their in season 50 SCY times, you get:
A: time of 27/ BMI of 22 = 1.23
B: 1.08
C: .9
D: .82
For what it's worth, I am a man, and my (admittedly lackluster) best 50 SCY free so far this year is 25.55.
I currently weigh 178 lb. and my height is 6' 1", which gives me a BMI is 23.5.
Thus my Jim's Jim's Weight-Weighted 50 is 25.55/23.5, or 1.087
There are two ways for me to get closer to par: swim faster, or gain weight.
Given the tremendous stigma on weight in our country, I don't think very many folks are likely to opt for the latter, or, for that matter, use my new metric as an incentive to eat more.
What I do think it could conceivably do is allow quite a few people now struggling with their weight to lay some legitimate claim to being--pound for pound--among the elite ranks in USMS swimming!
Give it a try!
Using a 50 free as a standard of health may not be particularly appropriate. I've seen guys at my college's alumni relays who were hugely overweight and well on their way to a host of health problems, but could still rip off a 22+ 50 free. However, using 500 free times instead would create a self-selecting sample group.
You make an excellent point. But for purposes of testing out the concept here, I wanted to make it as easy as possible for as many people to do the calculation.
Probably the 100 free would be a bit better than the 50. It's long enough so that your really out of shape friends probably couldn't get by on yesteryear's talent alone, but it's short enough that most people who swim even borderline competitively should be able to complete it.
Ideally, I suppose, there would be some way to let people figure out their metric, however it turns out to be, on different races--so that sprinters would get their best scores in sprints, and distance swimmers in distance events. Not sure at this point how to do that. As I suggested, just trying to come up with a rough measure that could be refined!
As for declaring 1.0 "par", I concede this is really arbitrary and not necessarily something that one should aspire to. My main goal, and I hope it works for at least some people out there, is to give credit to those who despite their weight, are nevertheless swimming quite fast relative to it, and in some cases, much faster than more constitutionally lean competitors are (despite their lighter and more streamlined "boats.")
At some point, I would love to do another metric based on foot size. This, I suspect, would give tiny-footed me a huge advantage over the Ian Thorpes and others born with freakishly outsize flippers.
I took my 50 free LCM best time from last season and converted it to SCY. I don't swim 50 free SCY...
Does this alter my result?
My BMI is 23.3. I'm way too muscular for this calculation! My 50 free LCM converts to a 23.8 SCY.
Britt, not sure if you are a man or woman, but if the former, you get a 1.02 and if the latter you get a .89. I suspect you are a man. And if so, you may be as close to my arbitrary par as they come!
Actually, it is interesting to note that this poll, like all things human, seems to be following a bell-shaped distribution. Right now, the 1.0-1.09 range seems to be the middle.
If you took the top 100 freestyle sprinters in the world, I bet you their scores would also range a bit, though probably more tightly than masters swimmers across the age spectrum.
I also suspect you'd find similar distribution patterns in other sports like, for instance, track, but that BMI would exert a larger impact, especially as distances increase. Another reason to love swimming: it is literally a level playing field (you can't get more level than water), and the impact of being constitutionally heavy is arguably much less than for most sports outside of football.
My score is 1.14. If I swam my absolute all-time best time, I'd just barely hit par of 1. Then again, I weighed less when I swam that time, so I still didn't make par at that time. If I swam more than 3x/week, I might actually get closer, but I'd probably also lose a couple of pounds. It's like a paradox!
SuperChloe, I suppose all ratios are paradoxical when ideally you want to change the numerator and the denominator in the same direction (in this case, down). If you succeed on both counts, you see no change to your score at all!
You could design other metrics where ideally the numerator and denominator head in opposite directions. Consider, for instance, my just-invented-for-sake-of-illustration Jim's Idle Rich Score.
It's the ratio of Net Worth divided by Weekly Work Hours, or $/T
Let us compare two individuals.
Person A, a top-rated "idea man" who labors at least 60 hours per week cogitating armchair science and the like and has a net worth of negative $231,000.00 in debt.
Person B, a failed presidential candidate, who doesn't work at all and is worth $250,000,000.00
Person A's Jim's Idle Rich Score is -231,000/60, or minus 3850.
Person B, on the other hand, comes in at a much more impressive 250,000,000/0, or Infinity.
Person A could improve his score by becoming solvent and working less.
Person B could hurt his score by losing some money and working at all.
Wait a second...
Maybe all ratios are paradoxical!
Britt, not sure if you are a man or woman, but if the former, you get a 1.02 and if the latter you get a .89. I suspect you are a man. And if so, you may be as close to my arbitrary par as they come!
a man?? :afraid: you guessed wrong :)
Karl, are you trying to say you are both slow and skinny? Do the calculations anyway! I need more than one poll result to validate the concept!
:bighug: Karl, you have my sympathy; I am the only one who voted "over 1.40" so far, due to my 19 BMI (:banana:) and slow 50 free. :sad:
Britt, not sure if you are a man or woman, but if the former, you get a 1.02 and if the latter you get a .89. I suspect you are a man. And if so, you may be as close to my arbitrary par as they come!
I just swam at a meet with Britt this last Saturday. SHE is definitely not a man and she is lightning :bolt:fast! (She is also thin like me and close to half my :cane:age.)
