stroke volume

简明释义

气缸的工作容积

英英释义

例句

1.Doctors often measure stroke volume 每搏输出量 to assess heart function in patients with cardiovascular diseases.

医生通常测量每搏输出量以评估心血管疾病患者的心脏功能。

2.During exercise, an increase in stroke volume 每搏输出量 helps deliver more oxygen to the muscles.

在运动期间，每搏输出量的增加有助于向肌肉提供更多氧气。

3.A well-conditioned athlete typically has a higher stroke volume 每搏输出量 compared to a sedentary individual.

与久坐不动的人相比，身体素质良好的运动员通常具有更高的每搏输出量。

4.Monitoring stroke volume 每搏输出量 can provide insights into fluid status in critically ill patients.

监测每搏输出量可以为危重病人的液体状态提供见解。

5.An increase in stroke volume 每搏输出量 is often observed during physical training.

在体能训练中，通常会观察到每搏输出量的增加。

作文

The human body is a remarkable system, and understanding its functions can provide valuable insights into health and fitness. One important concept in cardiovascular physiology is stroke volume, which refers to the amount of blood pumped by the heart with each beat. This measurement is crucial for assessing the efficiency of the heart and overall cardiovascular health. In this essay, I will explore the significance of stroke volume in relation to physical fitness and how it can be influenced by various factors.To begin with, stroke volume is a key determinant of cardiac output, which is the total volume of blood the heart pumps per minute. Cardiac output is calculated by multiplying stroke volume by heart rate. Therefore, if an individual has a higher stroke volume, they can achieve a greater cardiac output without needing to increase their heart rate significantly. This is particularly beneficial during exercise when the body requires more oxygenated blood.Several factors can influence stroke volume. One of the most significant is physical conditioning. Regular aerobic exercise, such as running or cycling, can lead to an increase in stroke volume. This adaptation occurs because the heart becomes stronger and more efficient at pumping blood. As a result, a well-conditioned athlete may have a resting stroke volume that is much higher than that of a sedentary individual. This increased efficiency allows athletes to perform better and recover faster after exertion.Another factor that affects stroke volume is body position. For instance, lying down can enhance stroke volume compared to standing up. When a person is lying down, blood returns to the heart more easily due to gravity, leading to an increased filling of the heart chambers before contraction. Consequently, this results in a higher stroke volume. Understanding these variations can help individuals optimize their training and recovery strategies.Furthermore, stroke volume can also be influenced by hydration levels and blood volume. Dehydration can reduce blood volume, which in turn can lower stroke volume and cardiac output. Maintaining proper hydration is essential for athletes and active individuals to ensure their cardiovascular system operates efficiently during physical activity.In clinical settings, measuring stroke volume can provide critical information about a patient’s heart health. For example, a low stroke volume may indicate heart failure or other cardiovascular issues. Healthcare professionals often use echocardiography to assess stroke volume and make informed decisions regarding treatment and management.In conclusion, stroke volume is a vital component of cardiovascular health that reflects the efficiency of the heart in pumping blood. It is influenced by various factors, including physical conditioning, body position, and hydration levels. By understanding stroke volume, individuals can gain insights into their fitness levels and take steps to improve their cardiovascular health. Whether for athletes seeking to enhance performance or for patients monitoring heart conditions, the concept of stroke volume plays a crucial role in overall health and wellness.

人体是一个非凡的系统，理解其功能可以为健康和健身提供宝贵的见解。在心血管生理学中，一个重要的概念是每搏量，它指的是心脏每次跳动泵送的血液量。这个测量对于评估心脏的效率和整体心血管健康至关重要。在这篇文章中，我将探讨每搏量在身体健康中的重要性，以及各种因素如何影响这一指标。首先，每搏量是心输出量的关键决定因素，心输出量是心脏每分钟泵送的血液总量。心输出量是通过将每搏量与心率相乘计算得出的。因此，如果一个人的每搏量较高，他们可以在不显著增加心率的情况下实现更大的心输出量。这在锻炼期间尤其有利，因为身体需要更多的氧合血液。影响每搏量的几个因素中，身体素质是最重要的因素之一。定期进行有氧运动，如跑步或骑自行车，可以导致每搏量的增加。这种适应是因为心脏变得更强壮，更有效地泵送血液。因此，训练有素的运动员在静息状态下的每搏量可能远高于久坐不动的人。这种效率的提高使运动员能够表现得更好，并在剧烈运动后更快恢复。此外，身体姿势也会影响每搏量。例如，平躺时的每搏量可能比站立时更高。当一个人平躺时，由于重力的作用，血液更容易回流到心脏，从而导致心脏腔室在收缩前填充更多的血液。因此，这会导致每搏量的增加。理解这些变化可以帮助个人优化他们的训练和恢复策略。此外，每搏量还可能受到水分水平和血容量的影响。脱水会减少血容量，从而降低每搏量和心输出量。保持适当的水分对运动员和活跃个体至关重要，以确保他们的心血管系统在身体活动期间有效运作。在临床环境中，测量每搏量可以提供关于患者心脏健康的重要信息。例如，低每搏量可能表明心力衰竭或其他心血管问题。医疗专业人员通常使用超声心动图来评估每搏量并做出明智的治疗和管理决策。总之，每搏量是心血管健康的重要组成部分，反映了心脏泵送血液的效率。它受到多种因素的影响，包括身体素质、身体姿势和水分水平。通过了解每搏量，个人可以获得对自己健康水平的洞察，并采取措施改善心血管健康。无论是寻求提升表现的运动员，还是监测心脏病状况的患者，每搏量的概念在整体健康和福祉中扮演着至关重要的角色。