B-23 複数の生体情報からみたAnaerobic Thresholdの推定(バイオメカニクス)

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  • B-23 Anaerobic Threshold estimation based on several vital signals
  • 複数の生体情報からみたAnaerobic Thresholdの推定
  • フクスウ ノ セイタイ ジョウホウ カラ ミタ Anaerobic Threshold ノ スイテイ

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The Anaerobic Threshold (AT) is defined to an exercise of the maximum workload when it can be performed without the continuous blood lactate concentration rising while the gradual increasing exercise. AT is widely used as an index of the safe and effective exercise workload in exercise therapy. To determine the AT, the blood lactate measurement with blood sampling or the ventilation measurement is needed. The blood sampling can not be performed except the medical licensed doctor or nurse, the ventilation measurement is needed a very expensive device. The purpose of this study is to make the procedure to estimate the AT using the vital signals such as the electrocardiogram (ECG), the Electromyogram (EMG) and breathing curved line (BCL). From the preliminary experiment (Experiment 1) result, the BCL was focused as the index for AT estimation in this study. AT estimation using the BCL summarized as follows ; 1) AT could be estimated by the following tendency in the gradual increasing exercise; the peak power in spectrum of the BCL transferred from the low frequency component range to the high frequency range over the AT level under the exercise 2) AT could be estimated by the following tendency in the controlled respiratory frequency of 27-28 [breaths per min] ; the power in the frequency equaling to 27-28 [breaths per min] increased immediately after the over AT level in the gradual increasing exercise.

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