Heart Rate Introduction

Plyometric exercise is also known as jump training, originally increased its creditability when Yuri Verkhoshansky developed a system to increase the speed of Russian athletes began emerging in 1964. These series of training was later established into North America with an American track and field coach witnessed the exercises, called them "plyometric" and started implementing them with his athletes. Since then sports teams worldwide have incorporated plyometric exercise into training regimens (Beginners Guide to Plyometric). Jump lunges are an example of plyometric exercise because it uses both eccentric contractions which occurs when muscles are lowered and concentric contractions, when the muscles become shorter (Jump Training).

The circulatory system is an essential part of the human body, transporting the nutrients, water and oxygen into the cells in your body and carries out waste such as carbon dioxide. The heart is pumps your blood into and throughout your body with the great blood vessels in your body such as the aorta, vena cava, pulmonary trunk, and pulmonary veins (Inner Body).The heart has 4 chambers, the right atrium, the right ventricle, the left atrium and the left ventricle. The right atrium collects de oxygenated blood from the body and pumps it into the right ventricle while the right ventricle pumps oxygenated blood into the lungs. The left atrium receives oxygen rich blood from the lungs, pumps it to the left ventricle and then transports the blood to the rest of the body (Health Heart Centre). With the atrium's pumping blood into the ventricles and the ventricles contracting blood to the rest of the body, the heart rate measures the rate of contractions of the heart. In this specific exercise the use of high eccentric contractions followed by quick concentric movements manipulate your heart rate to respond to conditions including exercise, emotion and body position.