Movement speed is the time taken between the initiation of movement and the completion of the movement. It depends upon techniques, explosive strength, flexibility and coordinative abilities. It plays a vital role in boxing, gymnastics, swimming; throws and jumps etc. Where the minimum time is taken to complete the movement. To develop the speed endurance we will have to work more on pace races because pace races means running the whole distance at a constant speed.Generally, 800 meters and above races are included in pace races. As a matter of fact, an athlete’s can run a distance of 300 meters at full speed but, in longer races such as 800 meters or above races he must conserve his energy by reducing his speed. For example, if there is a runner of 800 meter race his best time is 1 minute 40 second, so, he should run first 400 m in 49 seconds and next 400m in 51 seconds.

The Lung’s volumes and capacity refer to the total quantity of air correlated with different stages of the respiratory cycle. The volume of lungs can be directly measured while the lung’s capacities are assumed from lungs volume. The average lung capacity of an adult human male can hold about 6 liters of air, among which only a small amount of this capacity is used during normal breathing mechanism.

The trachea, colloquially called the windpipe, is a cartilaginous tube that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. The trachea extends from the larynx and branches into the two primary bronchi.

Blood Vessels are the tubular shaped structures and part of the human circulatory system which is mainly involved in the transportation blood and other essential products to the entire body.

Types of Blood Vessels

• Arteries
• Capillaries
• Veins
• Sinusoids

The system is concerned with the circulation of body fluids to distribute various substances to various body parts. The circulatory system is also known as the cardiovascular system. It is an organ system that allows blood to circulate and transport nutrients (such as electrolytes and amino acids), oxygen, carbon dioxide, hormones, and blood cells. These are circulated to and from cells in the body to nourish it.  The components of the human circulatory system include the heart, blood, red and white blood cells, platelets, and the lymphatic system.