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Hi fellow divers! Id just like to hear your opinion on this. I'm at the stage where i have good control of buoyancy. I can happily hold a deco stop horizontally without a reference line. But I still think I breathe too much gas, thus affecting my buoyancy. So my breathing speed seems to be regulated by trying to hold a depth rather than a need for oxygen. I normally try to set buoyancy as neutral while holding about half a lungful so I can ascend by taking a deep breath and descend by breathing out. This works well, but what happens is that I breathe faster than I should because I start breathing out in order to avoid ascending.
So can you suggest anything for improving my gas consumption, w/c is about 25 ltr/min, without sacrificing buoyancy control?
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A deep inhale followed by a slow exhale that lasts for about 6 to 8 seconds works best for air consumption. This will make the lungs inflate most of the time to create a positive buoyancy. What u should do is to adjust ur buoyancy so it will match your breathing pattern, and not the other way around.
Hope that could help.
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For good buoyancy, i suggest running every other day and doing cardio work out too! they can make/keep the lungs function efficiently and the can make the heart stronger. And as suggested above, breathe more slowly. Wear a cap too to keep in head heat. It can help.
and Yoga! it's good for stretching too!
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first, how's your trim, weight, & kicking  for me, getting my trim dialed in & using more efficient kicks are the factors that bring my air consumption down. those little things concerning the gear & some techniques tend to make a difference for me. and to deal with it, i just dive more, work on my weight, and stay fit! become one with the water & it will all work out. but still, it takes more dives...and time 
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scubaman
Surface-air Diver
Posts 149
Points 149
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crazeeroz posted the following on Tuesday 2nd October 2007
Hi fellow divers! Id just like to hear your opinion on this. I'm at the stage where i have good control of buoyancy. I can happily hold a deco stop horizontally without a reference line. But I still think I breathe too much gas, thus affecting my buoyancy. So my breathing speed seems to be regulated by trying to hold a depth rather than a need for oxygen. I normally try to set buoyancy as neutral while holding about half a lungful so I can ascend by taking a deep breath and descend by breathing out. This works well, but what happens is that I breathe faster than I should because I start breathing out in order to avoid ascending.
So can you suggest anything for improving my gas consumption, w/c is about 25 ltr/min, without sacrificing buoyancy control?
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Do you try to use your BCD to ascend? It frightens me to hear that someone takes in more air to ascend. You should be exhaling on the way up so you do not suffer from lung expansion. Try the BCD to ascend while breathing out.
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scubaman
Surface-air Diver
Posts 149
Points 149
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scubaman posted the following on Tuesday 4th December 2007
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crazeeroz posted the following on Tuesday 2nd October 2007
Hi fellow divers! Id just like to hear your opinion on this. I'm at the stage where i have good control of buoyancy. I can happily hold a deco stop horizontally without a reference line. But I still think I breathe too much gas, thus affecting my buoyancy. So my breathing speed seems to be regulated by trying to hold a depth rather than a need for oxygen. I normally try to set buoyancy as neutral while holding about half a lungful so I can ascend by taking a deep breath and descend by breathing out. This works well, but what happens is that I breathe faster than I should because I start breathing out in order to avoid ascending.
So can you suggest anything for improving my gas consumption, w/c is about 25 ltr/min, without sacrificing buoyancy control?
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Do you try to use your BCD to ascend? It frightens me to hear that someone takes in more air to ascend. You should be exhaling on the way up so you do not suffer from lung expansion. Try the BCD to ascend while breathing out.
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Sorry...I misread the topic...never mind...
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