Exercise PhysiologyThe unit 2 lab will show the differing metabolic rates during different activities that an AZ fire fighter might have during a basic shift. This lab will give a hypothesis, collect data, analyze that data, reconiize problems with the data and come to a conclusion.
The hypothesis for this lab is based on activities during a day at work. The question of a greater metabolic difference between the tones from alarm room or the actual fire calls has always interested me. I hypothesis that there will be an increase as each activity get more physically and mentally demanding.
The normal shift of a fire fighter starts at 0800 and continues for 24 hrs. During that time a fire fighter can have many different activities that they might perform. For this lab the four activities used will be a resting period, daily duties or work, being toned out for a call, and actual fire attack. The test subject will be an adult male, 28 years of age, weighting 185 pounds, in general good health.
The resting data will be collected during a resting period or safety break at approximately 1300. During that time the body can recover from calls or prepare for night calls. The metabolic rate at this time should be normal to low as to no extra energy is being required to work or think.
Duties around the fire house tend to be physically, yet still relaxing, and require more energy then resting. Duties like wash the fire trucks, mopping the bay floors, landscaping, and general cleaning can cause your body to increase its metabolic rate. The physical part of duties are not to challenging, but the mental part of trying to keep yourself interested in what your doing will affect it. That why fire fighters fool around so much.
Tones happen during the day at an unknown time. This is a bit of an alarm and surprise so the body will have to increases its metabolism. This increase is to supply the body with its need oxygen and nutrients to go from a stand still to a rush. The demand on the body can increase when getting the gear on, and also the need mental capacity to make the right decisions on the incident start with the tones. That rush will become a greater demand when the tones are for a fire.
Fire fighting happens on rare occasion, but when it does the physical and mental requirements increase exponentially, you will see a major release of endorphins in response to the sympathetic nervous system. During that time, metabolic rate has become increasingly faster trying to match the demand of the cellular requirements. The results will be a pulse rate increase to supply the body with blood. The blood pressure increases to supply the tissues with oxygen and nutrients required to sustain aerobic metabolism. Respiratory rate also increases to supply the demand of oxygen on the heart, brain, and body. With the increased respiratory rate the body can also rid its self of carbondioxide and other by products in the blood stream.
The data was collected for this lab at the fire station that I work at. I was able to use the tools and medical equipment to collect detailed vitals on myself with the help of the crew. The ECG monitor was used for my vitals, it has a Bp cuff and pulse oximetry, I also was hooked up to the ECG and was able to see the change of my heart rhythms. They took pictures during different process, and times of the day. The resting, duties, tones data was collected at the actual times during the shift that they happened. Unfortunately, there were no fires during the shift, but we drill. During the daily drill evolutions I was able to simulate the activates of fire ground operations. We practice like we play, so it is very accurate, other then the mental component.
The hypothesis for this lab is based on activities during a day at work. The question of a greater metabolic difference between the tones from alarm room or the actual fire calls has always interested me. I hypothesis that there will be an increase as each activity get more physically and mentally demanding.
The normal shift of a fire fighter starts at 0800 and continues for 24 hrs. During that time a fire fighter can have many different activities that they might perform. For this lab the four activities used will be a resting period, daily duties or work, being toned out for a call, and actual fire attack. The test subject will be an adult male, 28 years of age, weighting 185 pounds, in general good health.
The resting data will be collected during a resting period or safety break at approximately 1300. During that time the body can recover from calls or prepare for night calls. The metabolic rate at this time should be normal to low as to no extra energy is being required to work or think.
Duties around the fire house tend to be physically, yet still relaxing, and require more energy then resting. Duties like wash the fire trucks, mopping the bay floors, landscaping, and general cleaning can cause your body to increase its metabolic rate. The physical part of duties are not to challenging, but the mental part of trying to keep yourself interested in what your doing will affect it. That why fire fighters fool around so much.
Tones happen during the day at an unknown time. This is a bit of an alarm and surprise so the body will have to increases its metabolism. This increase is to supply the body with its need oxygen and nutrients to go from a stand still to a rush. The demand on the body can increase when getting the gear on, and also the need mental capacity to make the right decisions on the incident start with the tones. That rush will become a greater demand when the tones are for a fire.
Fire fighting happens on rare occasion, but when it does the physical and mental requirements increase exponentially, you will see a major release of endorphins in response to the sympathetic nervous system. During that time, metabolic rate has become increasingly faster trying to match the demand of the cellular requirements. The results will be a pulse rate increase to supply the body with blood. The blood pressure increases to supply the tissues with oxygen and nutrients required to sustain aerobic metabolism. Respiratory rate also increases to supply the demand of oxygen on the heart, brain, and body. With the increased respiratory rate the body can also rid its self of carbondioxide and other by products in the blood stream.
The data was collected for this lab at the fire station that I work at. I was able to use the tools and medical equipment to collect detailed vitals on myself with the help of the crew. The ECG monitor was used for my vitals, it has a Bp cuff and pulse oximetry, I also was hooked up to the ECG and was able to see the change of my heart rhythms. They took pictures during different process, and times of the day. The resting, duties, tones data was collected at the actual times during the shift that they happened. Unfortunately, there were no fires during the shift, but we drill. During the daily drill evolutions I was able to simulate the activates of fire ground operations. We practice like we play, so it is very accurate, other then the mental component.
The conclusion of this lab follows my hypothesis right on. All of the activities are increasingly more demanding on the body so it will have to increase its metabolism. I was hoping for a more drastic change with the vitals on being toned out to a call. The fact that I was not toned out to a fire and just general medical calls might have something to do with it. The calls at night also were a bit more demanding then those during the day, the vitals were a bit higher across the board. I wonder if getting up in the middle of the night consistently over the year affects your metabolism poorly. This lab was fun and I got my crew involved with my education, so they learned a bit too.
These ECG strips shows my heart rate and rhythm. The top strip is my heart during rest, a normal sinus rhythm. The bottom strip is after extreme physical out put, sinus tachycardia. The higher my cardiac output is the smaller and narrower the waves get. This shows how my heart is working to keep up with the metabolic demand of my body. The increase pulse rate will increase my B/P and require high oxygen intake, increasing respirations.
These ECG strips shows my heart rate and rhythm. The top strip is my heart during rest, a normal sinus rhythm. The bottom strip is after extreme physical out put, sinus tachycardia. The higher my cardiac output is the smaller and narrower the waves get. This shows how my heart is working to keep up with the metabolic demand of my body. The increase pulse rate will increase my B/P and require high oxygen intake, increasing respirations.
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