serious question: would gaining around 3 more pounds effect your running? i gained some weight on advice of a doctor (i have no history of eating disorders or anything like that), the doctor said that it would probably be best to be a little heavier. i'm wondering if this will cause me to slow down. i dont want to think about this really or spiral into a messed up way of thinking about food, but some knowledgable comments would be appreciated. thanks.
Well what are you now...
a dude
a chick
110 lbs
150 lbs
300 lbs
need to know more
5 pound can make a difference of up to 2:30 on your 10K time. You can extrapolate from that. I have personally found that is a fairly accurate ratio.
That is probably the stupidest thing I have ever heard in my life. So, if Meb gained 5 pounds, he would become a 29:40 guy. I hope you were being sarcastic.
girl
now i am around 110 lb, 5'2"
five pounds are you crazy 2:30 you have to be crazy
i can't believe you said that gaining five pounds will not matter that much...defantly not 2:30
I'd say if you were 125 and jumped to 1:45 then your going to see a big differance maybe 2:30
But going from 125 to 130 at the most 15 seconds for 10k...at the most if at all.....
don't worry abotu weight....eat right run as much as you can and the weight will just automatcially go to what is healthy...if you are sitting around worried about a few pounds and then you start starving yoruself then you have problems.....just relax...
I'm about 195-200lbs right now and have found that it's a lot harder to lose the weight and get back into shape. When I was 180-185lbs I could run for a month and be back in really good shape (for me) and be fine, now it takes a lot longer to get into shape than before. After a month of running I'm nowehere near where I normally would be and the difference is weight.
Swofford11 wrote:
don't worry abotu weight....eat right run as much as you can and the weight will just automatcially go to what is healthy...if you are sitting around worried about a few pounds and then you start starving yoruself then you have problems.....just relax...
While I'd agree that adding 5 pounds is unlikely to add 2:30 to a 10K time, your other statements have me bothered.
I've read before about this business of "the weight will just automatcially go to what is healthy." I understand your point, but one still has to consider how many calories are being burned vs. how many are being consumed. Another problem: I'm always going to be relatively heavy as I'm 6'3". I can be generally healthy at a variety of weights, but my risk of injury goes up more the heavier I get due to the extra stress on my feet, joints, etc. And I'm sure that if I get really light I'd have other injury problems as well. I don't recommend stressing over one's weight, and I agree that with a smart diet and smart training plan, one should FIND a weight that works well for them. But it doesn't happen automatically.
BDG
try walking :)
KE = (1/2)mv^2, where KE is in joules, m is in kg, and v is in m/s
You can play with the numbers for yourself, but that formula will give you some surprising results (if you assume things like no change in body composition, things that are not really true, but can be neglected for small changes in m).
5lbs on your legs or 5lbs on your belly.Muscle is heavier than fat.Building yourself up could improve you.Your doctor has asked you to gain weight for a very good reason.what you want is weight that works for you not deadweight.Lets face it 5lbs is not exactly going to stop a train.
well, 5 pounds for a 140lb guy is not the same as 5lb for 110lb girl... Since she is much weaker, her muscles will have hard time to adjust and she WILL run SLOWLIER. How much? Probably significantly, depending on her strength and cardiovascular fitness.
What's the problem of that doctor? 110lb at 5'2'' seems fine to me- average female-runner body. Many elites weigh under 100lb for the same height.Don't starve yourself, eat when you are hungry and you're working hard, but don't stuff yourself like pig either. That doctor probably has as an ideal bubly 135lb daughter- that's also not healthy.
Well here's a real life example, what do people predict:
I'm exactly 6 feet, and did a 10k in 35:18 a couple of months ago when I weighed 168 lb.
I am now 154 lb. What do people think I will run for a 10k in 2 weeks time, assuming my weight has levelled off?
You people who think that using physics can get you to the answer are way off.
If you work out and gain five pounds of muscle, you will probably be about the same.
If you stop running and get a 5 pound belly you will probably be slower.
If you are an anorexic girl and you cant train because you are too weak, then you put on a couple pounds and start eating right, you will probably be faster.
snatch wrote:
5lbs on your legs or 5lbs on your belly.Muscle is heavier than fat.
5 lbs is 5 lbs. a pound is a measurement of weight. what you meant to say was that the same volume of muscle weighs more than the same volume of fat.
don't be an idiot.
Data wrote:
5 pound can make a difference of up to 2:30 on your 10K time. You can extrapolate from that. I have personally found that is a fairly accurate ratio.
do you weigh 80 pounds?
for me, a gain from 160 to 165 adds just over a minute to my 10k time
t4b wrote:
If you work out and gain five pounds of muscle, you will probably be about the same.
If I pick up 5 pounds in my pecs, I will be much slower because more energy is required to transport the extra mass. I'm sorry if you don't like physics, but it does govern a lot of things.
Did the doctor give you a specific reason why he thought that being a little heavier would be better? did he think you would get sick less, have more stamina etc?
Let 1 be your current state, and 2 be your state after you gain weight. If the weight you gain is just fat, and does not increase your running power (your aerobic/muscular energy rate), P2=P1 and KE2=KE1, so
1/2*m2*v2^2=1/2*m1*v1^2.
Velocity is v=d/t. Since if you want to know how your time will be affected over a specific distance, d1=d2. Therefore,
t2/t1=sqrt(m2/m1).
If you weigh 110 lb, and you are gaining 3 lb, then
t2/t1=sqrt(113/110)=1.014.
Therefore, what you used to run in 60 sec will now take 60.8 sec. If you gained 10 lb, it would take 62.6 sec. If you're a 150 lb person, increasing your weight by 1 lb increases your time by 0.2 sec for every 1 min. For El G, a 3 lb gain would move his mile PR to 3:45.5.
So how do we interpret these results? Gaining a small amount of "useless" weight makes you slower, but not by much at all. The assumption was that gaining 3 lbs would be like wearing a vest--a physiological over-simplification. Here are some of the factors that were neglected: changes in muscle mass, changes in form, ideal caloric intake, nutrition, etc.
Fat Fighter wrote:
Well here's a real life example, what do people predict:
I'm exactly 6 feet, and did a 10k in 35:18 a couple of months ago when I weighed 168 lb.
I am now 154 lb. What do people think I will run for a 10k in 2 weeks time, assuming my weight has levelled off?
By the way, for your case, the conservation of energy equation predicts that you will run 32:22. No offense, but that seems unrealistic, unless you've been training your ass off (literally and figuratively).