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国际文凭组织 · IB Diploma · 体育、运动与健康科学 · SL 知识点 1 1:07 英语旁白 · 英中内嵌字幕
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These are selected topics, not the whole syllabus, and every example is fictional.
这些是精选主题，不是完整大纲，所有例子都是虚构的。
Cardiac output is heart rate times stroke volume, and it rises and recovers with exercise.
心输出量 = 心率 × 每搏输出量，它随运动升高并恢复。
Heart rate climbs within a minute of starting exercise, levels off, then falls back during recovery: an acute response.
运动开始一分钟内心率上升，随后趋于平稳，恢复期又回落：这是急性反应。
During the bout, heart rate is 120 beats per minute and stroke volume 80 millilitres per beat, so cardiac output is 9,600 millilitres, 9.6 litres, per minute.
运动中心率 120 次/分钟，每搏输出量 80 毫升，所以心输出量每分钟 9,600 毫升，即 9.6 升。
An acute response happens during or soon after exercise, like heart rate rising.
急性反应发生在运动中或运动后不久，比如心率上升。
A training adaptation develops over repeated sessions, such as a lower heart rate at the same workload.
训练适应在多次训练中形成，比如同样负荷下心率更低。
One heart-rate reading cannot prove fitness: hydration, stress and recent activity confound it.
单次心率读数不能证明体能：水分、压力和最近的活动都会干扰它。
Check yourself.
自我检测。
100 times 70 millilitres is 7 litres per minute.
100 × 70 毫升 = 每分钟 7 升。
90 times 60 is 5.4 litres per minute.
90 × 60 = 每分钟 5.4 升。