weight range wrote:
what's the right weight range for a male 30-34 runner what's 6ft tall?
In what context? Maximizing performance?
SHORT ANSWER: "As light as you can get; eating a healthy, higher protein, nutritious diet, and without seeing: increased susceptibility to injury, decreased workout/race performance OR consistency in workouts/races, decreased recovery, decreased quality of sleep, increase in frequency of getting sick, noticeable and sustained increase hunger/appetite/cravings.
Those are the bodies "I'm too lean, FEED ME" signals. Respect them. If you don't one of two things will happen:
1) You'll fall apart before your key races and either burn out or get injured.
2) You'll make it one season/cycle and have a breakout performance. Shortly thereafter, #1 will occur.
We've seen this pattern often, especially in female runners who develop eating disorders. They often get one really, really good season and then fall to shambles as the lack of consistency, injuries, or motivation and low energy take over.
LONG ANSWER:
If the goal is purely to run the best time possible, at let's say 5k and longer, you're going to want to be fairly low in muscle, and as lean as possible.
What those two things mean is INDIVIDUAL. If you try to mold yourself to look like another runner, you're being foolish and will almost certainly end up unhealthy or injured. Don't do it. Different people carry muscle differently, and have different proclivity towards how much they have. A runner built like a Solinsky who decided he looked heavy and tried to starve or immobilize himself to trend towards a Kiprop would be headed for disaster.
In addition, people carry body fat differently, again both in amount AND distribution. Don't expect to look exactly like another lean runner. Also realize that different people naturally handle different levels of leanness better. Some individuals can comfortably hang out at 8-9% year round. others start to feel weak as they push below even 11-12%.
How does one figure out the correct place then? Do you have an already muscular frame, or especially have intentionally before built muscle? Step one is to make a point to reduce gym training or extensive heavy lifting. This doesn't mean do nothing, but you don't need a massive growth stimulus.
From there, it's more or less a matter of weight loss with healthy nutrition. Get your 0.8g-1g of protein per pound of body weight each day. Eat quality, filling foods. Snacking occasionally is fine. The weight will probably start to drop if you do that. If it doesn't, then you might have to think a little bit about calories, and make some subtle restrictions, especially from the carbohydrate side.
If you're dropping weight and feel good, still performing, not getting sick, not feeling weak consistently (everyone feels weak occasionally on a diet and getting close to race weights), etc. then keep doing what you're doing. If you hit a point where the above negatives start happening; e.g. you start feeling week all the time, getting injured easily, getting sick more than you see as typical, massive hunger issues, and not performing consistently in workouts....that is your signal.
That's the "I'm getting too lean" signal. Usually at that point you want to make a point to eat more for a week or two and make sure performance normalizes. Get back to where the workouts are consistent and you feel strong and fit, with good energy.
It's also possible to get those same negative feelings if you're kinda lean but not race weight (if you're far away, say 30+ lbs from race weight, you usually won't have too many energy problems), and are losing weight with a poor diet (insufficient nutrients) or have a good diet but are losing weight too fast (possible insufficient nutrients, definitely insufficient energy). In that case, scale can be a good guide. If you're consistently losing over 1lb/wk then take a look at the amount you're eating, it's probably too aggressive at this point. If you're losing less than 1lb/wk, then it could be an issue of diet quality.
As far as a range, my guess is that 90% of the population at 6ft and running lean will be between 135lbs and 155lbs. If you're less than that, you probably have an outlier build that trends towards a guy like Kiprop. If you're over or around 155, you probably have some time in the gym building muscle and/or have a naturally larger frame and greater muscle carried naturally.