For each test oxygen uptake, heart rate and perceived exertion (how hard it felt to the swimmer) were recorded to give an indication of economy.
每次试验，摄氧量、心率和疲劳感都被记录下来以作为经济性指标。
For each test oxygen uptake, heart rate and perceived exertion (how hard it felt to the swimmer) were recorded to give an indication of economy.
每次试验，摄氧量、心率和疲劳感都被记录下来以作为经济性指标。
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