How does additional weight effect the speed of a runner?
347555
Depends also if it is muscle or fat.  The muscle can overcome the inertia & air friction.
1068082
I was never faster than the summer I did lots of weight training. the added muscle will help protect your joints too.
200369
Heavy weight works your type-2B muscle fibers. The way you do this is to put on a weight in which you can not exceed 6 to 8 reps maximum, if you can do 9 then it is to light. This breakes down the type-2B fibers of whos characteristics are No endurance but extremely strong. This will cause your muscles to grow larger.\n\nLigher weight works your type-2A muscle fibers. You work them by choosing a weight in which you perform 15 to 20 repetitions no more no less but whatever you choose the final rep should be extremely difficult just like the 8th rep noted above. The characteristics of these fibers are that they are not as strong as the type-2B but have more endurance.\n\nType-1 fibers are totally endurance. For the long distance runner etc.. to work them with weights you would have to pick a weight and perform 100 reps slowly.\n\nSo in summery if you only lift heavy you will get larger but may not have that cut up look, conversely if you just do lighter with high reps you will get leaner muscles but not as large. Most people do these in combination, say 8 weeks on one type then 6 or 8 on another possible adding in supper sets etc.
547892
It has a lot to do with your breathing (make sure you take deep enough breaths) and not stretching enough or eating too much before you run.
128814
yes, the skater's movement would be different. Because the skater weighs more, the force would not accelerate the skater as quickly and the speed would be lower.
287571
It may depend on what kind of tracks you'll be running on.  The different surfaces need different spikes.  But in any case, the lighter shoes the better.
102476
Work on your sprinting technique to increase efficiency of motion. I've always heard you can't teach "speed," so I think it's all about technique.
1012760
It depends, your weight, height, speed all affect it, I believe if you are going up hills that would affect it as well.
450458
Run more and run with faster than you people in order to make you run more and faster.\nGood Luck...:)
830683
The Fitness Magazine website has a section on running.  I'm not sure if it is the same as the issue you saw, but hopefully it is helpful for you: http://www.fitnessmagazine.com/fitness/category.jhtml;jsessionid=TYKVMYMC2VLNLQFIBQSCCAQ?categoryid=/templatedata/fitness/category/data/1156343516987.xml
339568
Dude it doesn't really matter what race people are. I think that your buddy is just more athletic than you. You might be stronger than him but he just has better control and coordination of his limbs that make him run better and faster than you. I have a friend from Cameroon and I'm a faster sprinter than him and he said he used to run to school when he was little before his parents moved to the city.
719666
Adding bulk-extreme increased muscle mass makes you slower because of just that BULK which is done by lifting HEAVY weights.It is much harder to move a large,heavy object than a small one.  You can still lift weights-but don't just concentrate legs-do overall body conditioning or toning (builds smooth muscle not bulk)but do more reps with less weight.  Soccer requires streamlined look -small amount of weight with more repetitions(get Soccer Mags-they tell what kind of body conditioning you need.) To  improve speed -sprint-which means you run as fast as you can until run short of breath STOP then do again  an again and again. This  also develops your stamina for increases lung power which is certainly what you need in soccer.  Once you decrease muscle size of legs you'll regain some of your speed. Can also do Tai-Chi increases stamina and gives leg strength-endurance power comes from legs.  Bu best is to look up Soccer Conditioning see what the pros do.  I love soccer.
780310
Shoes with this 'rocker' shape make the muscles in your legs work differently, and it can be useful, but only if you use your foot correctly in the first place. Similar shapes have been tried in running shoes now and then, but the more gradual 'footstrike' uses up energy and slows the runner down.\n\n(that's actually beneficial; it makes you work harder and protects you from injury, but most runners will sacrifice safety and long-term health if it makes them faster!)\n\nLots of people try to run only on the ball and toe of their foot; if you do this, then the rocker shape could make your foot roll forward faster than you're used to (leading to injury).\n\nFell Running (running in moorland & rough countryside) is very good for your leg muscles and joints. That's because your foot placement varies all the time, so the different muscles all learn to support each other, instead of constantly operating in the same sequence as they do when you run on a smooth surface. \n\nTypically, a Fell Running shoe is LESS padded and curved than a normal road shoe. This allows the runner to FEEL the surface better, and adapt to it more easily. In this type of running, the foot might be placed on the ground in a totally different position for EVERY STEP. These variations teach the leg muscles to cooperate very effectively.\n\nIf you slow down your usual running, and try to run in different 'styles' (the categories are designed to sell more shoes, not help your running), you will improve the way your leg muscles co-operate. \n\nIf you buy more than one pair of running shoes, try to get contrasting styles (eg a pair for over- & a pair for under-pronation, or a heavy pair and a lightweight pair) and use them alternately, carefully adapting your style to each. Don't run too fast (if you do, you're likely to revert to your usual habit, and you'll lose the benefit), and try to 'roll' your foot onto the ground, so that it makes little or no sound. \n\nYou can try running slightly toe-out and slightly toe-in, as well. You'll notice that this feels different in each 'style' of shoe, because your foot position encourages you to pronate differently too.\n\n(Running fairly slowly and quietly, with an exaggerated heel-and-toe action and slightly higher knee-lift, should replicate any benefits the 'rocker' shoe can give you) \n\nThese drills will activate the muscles around your calf and shin differently, as well as some of the muscles in your thigh, making you a more versatile runner, and defending your knee, ankle and hip from accumulating damage.\n\nIMPORTANT : while you're not used to the drills, you're vulnerable to overuse damage in muscles you've been neglecting. Introduce the drills gradually, and reduce your session mileage AND your overall mileage until you're very comfortable with each drill.
68766
There are 3 things that you can do to run faster: You can increase your leg turnover rate.\nYou can increase your stride length.\nYou can increase your overall strength so you can maintain a faster turnover and longer stride for a longer time. That is, you run faster by not slowing down as much.\n\nHere are some things to try to affect one or more of these things.\n\n1.Work on your (running) strength. You should do interval workouts, 100 hard run (not sprint) followed by 100 walk/jog, then repeat. Start with 4 and work up to 10-12 repeats as you get stronger. For some workouts, do the same thing with 200s and occasionally a 400. \n\n2. Work on your upper body strength with weights. Do not go heavy, go light. You want to do a lot of quick reps rather than a few, slow, reps with heavy weights.\n\n3. Run some hills. If you can find a long, gradual hill, do some of your 100 repeats uphill. It will increase your knee lift and leg strength. As an alternative, run steps. Hills are better because running steps, you chop down your stride length to fit the steps.\n\n4. Learn to run “Fast, but relaxed”. Jog 20m, gradually accelerate to full speed over 20m, then slow back down to a jog over 20 m. Jog, then repeat. When you do this, concentrate on your form and staying relaxed through the whole 60m.\n\n5. There a some running related exercises that you can do. Skip like a little kid. Do repeat 50s. First skip for distance, making each stride as long as possible, then skip for height, working on getting your knee up and getting as much air as possible.\n\nTo prevent soreness, stretch out completely after your workout. You want to stay as flexible as possible. You don’t want to have one set of muscles working against another set of muscles.  A good book is Bob Anderson's  “Stretching” (See link below) you can probably find it at your local library, it’s a classic. It has pages of stretches. You may also be sore because you are running to tight and your muscles are fighting each other. If you are clenching your teeth and grimacing, you are too tight.
1175193
There's too many x-factors with a question like this to offer effective advice.  No idea how fast you are now, how healthy your present lifestyle is, what monetary resources you have to sink into this goal, etc etc.\n\nThat's especially true because 2:50 over 800 meters is a pretty fast time for a non-elite runner.
643114
Holding on to the treadmill is probably doing more harm then good when running, as you are taking quite a bit of your weight on your arms. Try running without holding on and increasing the height and speed if you want to to a comfortable rate, this will give your legs and fitness levels a safer workout.
1091484
speed makes the difference.