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  The athletes were observed to the cardiorespiratory function of maximum exercise, to the step load when they were using treadmill.
  The other checking point were score, AT point, variations from the maximum, etc.
  The study resulted in as follows:
  1. In the time of maximum exercise load national Biathlon team have All-out time 15.21±1.93min, HR 193.38±7.84beats/min, ？<SUB>E</SUB> 124.49±17.60ℓ/min, PR 55.00±6.50f/min, TV 2.75±0.37 ℓ/f, ？O₂4.51±0.67 ℓ/min, ？CO₂, 5.01±0.57 ℓ/min, RQ 1.16±0.04, ？O₂/W 70.21±4.43㎖/㎏min, O₂, pulse 24.47±3.52㎖/㎏/beats.
  2. The score of AT-point is as follows: AT point to All-out, time of National team 9.58±1.17min(63.72%), AT-HR max 176.00±10.07beats/min(91.00%), AT-？<SUB>E</SUB> max 93.40±24.55 ℓ/min(74.79%), AT-？O₂ max 4.07±0.76 ℓ/min(89.96%), AT-？CO₂ max 4.09±0.70 ℓ/min(81.29%), AT-ℓ ？O₂/W max 63.19±5.43㎖/㎏/min(89.96%), AT-O₂ pulse max 23.07±3.53㎖/㎏/beats(94.58).
  3. The correlation between HR max and AT-HR max point, National team have a high correlation r=+0.80(p＜0.05), ？<SUB>E</SUB> max and AT-？<SUB>E</SUB> max point r=0.82(p＜0.05) have a high correlation, ？O₂ max and AT-？O₂ max point r=+0.98(p＜0.001) have a very high correlation, ？CO₂ max and AT-？CO₂ max point r=+0.93(p＜0.001) have very high positive correlation, ？O₂/W max and AT-？O₂/W max point r=+0.84(p＜0.01), O₂ pulse max and AT-O₂, pulse max point r=+0.98(p＜0.001) have a very high correlation.

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