1、力气本质

1, the essence of strength

所谓力气本质是指肌肉在严重状态下（长度不变）或缩短状态下（长度缩短）所表现出的力效应的才能。力气本质分为两类：其一、静力性力气，指肌肉缩短时在肌肉长度不变的情况下所发生的力气；其二、动力性力气，指肌肉在进行缩短性缩短时所发生的力气。动力性力气又可分为重量性力气与速度性力气。

The so-called force nature refers to the ability of the muscle to show the force effect in a serious state (the length is constant) or the shortening of the state (short length). The essence of force can be divided into two categories: first, static force, which refers to the strength that occurs when muscles are short when the muscle length is constant. The dynamic force can be divided into weight force and speed force.

决议力气大小的要素，一是肌肉自身的结构与机能上的改进，二是神经系统调理机能的改进。

The key element of the strength of the resolution is the improvement of the structure and function of the muscle itself, and the two is the improvement of the function of the nervous system.

2、速度本质

2, the essence of speed

速度本质是指人体快速运动的才能，包含位移速度（快速经过某间隔的才能），反应速度（对各种刺激快速反应的才能），动作速度（快速完结动作的才能）。

Speed essence refers to the ability of the human body to move quickly, including displacement speed (passing quickly through a certain interval), reaction speed (the ability to respond quickly to various stimuli), and the speed of movement (the ability of quick ending action).

3、耐力本质

3, the essence of endurance

所谓耐力是指人体长期活动或是对立疲惫的才能。包含速度耐力（无氧耐力，指人体坚持较短时间内时快速运动的才能）。一般耐力（有氧耐力，指人体长期进行中等强度肌肉活动时的才能），专项耐力。

The so-called endurance is the long-term activity of the human body or the ability to oppose exhaustion. It contains speed endurance (anaerobic endurance, which means the body's ability to stick to fast movement in a shorter time). General endurance (aerobic endurance, the human body's ability to perform moderate muscle activity for a long time), and special endurance.

4、活络本质

4, the essence of activating collaterals

活络本质是指在各种骤变的条件下，运动员能敏捷、精确、协调的改动身体运动的才能。

Active essence refers to the change of conditions, players can agile, accurate, coordinated changes in physical exercise ability.

5、柔韧本质

5, the essence of flexibility

包含柔软韧两个方面，柔是根底，韧为重要。

It contains two aspects of soft and tough, soft is the base, and toughness is the most important.