Affect of 15% weight reduction on speed

Former Member
Former Member
Hi all - I have an odd post for you to ponder :) Recently I've decided enough is enough and it's time to shift some unwanted poundage. Over the past few months through exercise and eating much better I've dropped about 15% of my original body weight, going from 207lbs to 175lbs. At the same time I've been swimming a bit and making an effort to keep on some muscle too. I know it's a very very hard question to answer but am looking for people's estimates on what this sort of weight loss would do to your swimming time over longer distances if I was able to keep everything else static (stroke, flexibility, strengtht etc). The only difference if possible would be there would be less body weight, and hopefully a better shape for moving through the water. I know that due to water being denser it's not as easy to say as it would be in relation to running etc, but say over a 5km open water swim, what would people guess the % improvement would be as a result of this? Cheers GC
Parents
  • I know that due to water being denser it's not as easy to say as it would be in relation to running etc, but say over a 5km open water swim, what would people guess the % improvement would be as a result of this? I lost 22% of my weight over 12 months and started my weight lose program just 4 weeks before a 3km race and ended my weight lose with the same 3km race. I went from 45:15 to 38:02. over 7 minutes faster, but it's really hard to say that all of that was weigh lose. I also started swimming 3 times a week instead of just two, about 3 months before the race I started biking to work (~8km each way). but I can say that the weight lose made it possible to train harder. I've been at 184lbs for the past 8 months now and only plan in getting down to 180-182 before next summer (2010). but I have a big meet in 7 days, so we'll see how much the weight lose events my 800m as well.
Reply
  • I know that due to water being denser it's not as easy to say as it would be in relation to running etc, but say over a 5km open water swim, what would people guess the % improvement would be as a result of this? I lost 22% of my weight over 12 months and started my weight lose program just 4 weeks before a 3km race and ended my weight lose with the same 3km race. I went from 45:15 to 38:02. over 7 minutes faster, but it's really hard to say that all of that was weigh lose. I also started swimming 3 times a week instead of just two, about 3 months before the race I started biking to work (~8km each way). but I can say that the weight lose made it possible to train harder. I've been at 184lbs for the past 8 months now and only plan in getting down to 180-182 before next summer (2010). but I have a big meet in 7 days, so we'll see how much the weight lose events my 800m as well.
Children
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