9/20/12
HSC420
Lab Report 1-3 I. Introduction

In lab 1, the heart rate and blood pressure were established. The principles that govern each of them are those of the heart. The heart rate (HR) is each full beat, or each pump, the heart does; this is recorded in beats per minute (bpm). The blood pressure (BP) is the amount of resistance the heart works against the arterial walls during each pump. My hypothesis for this lab was that my subject would have the same HR and BP for each of the locations and different methods used. I stated this because, at rest, the heart should be working at the same level no matter the position; although one position might slight lessen the heart’s workload. This is important in terms of my subject’s health and fitness because it means he has a normal, young strong heart. Per minute, it is important for the numbers to be lower because it means his heart is not working too hard but can supply his body with a sufficient amount of blood.
In lab 2, the establishment of HR and BP were taken to another level and recorded during different exercises. The principles of this are that my subject’s HR and BP would gradually increase throughout exercise. Physiologically, this is because of the increased demand of oxygen in the working muscles. An increase of HR and BP is the heart’s response to these demands; a faster HR means that the heart is supplying the body with blood at a quicker rate; the higher BP is the high pressure the heart is working against because of the faster HR. In exercise, all of these increases are beneficial since the muscles require oxygen to continue working at the level they are. The quicker the oxygen rich blood gets to the muscles, the better/longer they can work without fatigue.
In lab 3, the ideas of HR and BP were expanded. The different tests that were used can all help do one thing; help determine the