HPVT (High Performance Ventilation Training) masks reduce the amount of oxygen that can enter the lungs for two purposes: 1) When less oxygen is allowed into the body, it can get rid of carbon dioxide faster thereby reducing the risk of cramps during training, and allowing a trained athlete to continue training longer and faster. 2) By reducing the amount of oxygen, the body needs to work harder in order to pull in the same amount of air, thereby training the breathing musculature.
圖片編號:
44442918
拍攝者:
Blefever
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 480 x 319 | JPG | 13 | |
標準授權 | S | 800 x 532 | JPG | 15 | |
標準授權 | M | 2123 x 1412 | JPG | 18 | |
標準授權 | L | 2741 x 1823 | JPG | 20 | |
標準授權 | XL | 3876 x 2578 | JPG | 22 | |
標準授權 | MAX | 4247 x 2825 | JPG | 23 | |
標準授權 | TIFF | 5481 x 3646 | TIF | 39 | |
進階授權 | UEL | 4247 x 2825 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
UEL
標準授權 | 480 x 319 px | JPG | 13 點 |
標準授權 | 800 x 532 px | JPG | 15 點 |
標準授權 | 2123 x 1412 px | JPG | 18 點 |
標準授權 | 2741 x 1823 px | JPG | 20 點 |
標準授權 | 3876 x 2578 px | JPG | 22 點 |
標準授權 | 4247 x 2825 px | JPG | 23 點 |
標準授權 | 5481 x 3646 px | TIF | 39 點 |
進階授權 | 4247 x 2825 px | JPG | 88 點 |