Cited: (limitations section)
Cited: (limitations section)
In this experiment, several physiological parameters were observed in three patients before, during, and after moderate exercise. One of these parameters was the pulmonary airflow, which was recorded utilizing an Airflow Transducer. This device measures airflow using slight pressure differences created by the resistance of a screen inside the device. Pulmonary airflow is the rate of movement into and out of the lungs, and is directly proportional to the pressure difference of the intrapulmonary pressure and the atmospheric pressure, and inversely proportional to the resistance of the lungs (elasticity/diameter of air pathways).1 The BIOPAC program then can convert the airflow to volume of air moved. Pulmonary ventilation is the movement of air in and out of the lungs. A more specific measurement of pulmonary airflow is the minute respiratory volume, which measures how much air is moved into and out of the lungs in one minute (tidal volume*breaths per minute).2 Since both deal with a volume moved per time, they are synonymous, although the parameter is referred to as airflow in this report.15E…
Maximal oxygen consumption (VO₂max) refers to the maximum capacity of an individual body to transport and use oxygen during intense incremental exercise. VO₂max is achieved when the workload continues to increase but the oxygen uptake has halted and achieved a steady state or “plateau”.…
2. Indicate, based on your results, what your Cardiovascular Fitness Rating is using the appropriate chart from Appendix B. If you used the jogging or walking test, indicate what your VO2max was.…
The clinical finding of 90% oxygen saturation level and a Po2 of mmHg would show that the arteries are having too much oxygen, since a normal Po2 of a resting person is 40mmHg and excercises lower Po2 levels. A normal resting oxygen level should be about 94% with no added oxygen.…
* Aerobic Capacity - ability to persist in physical activities that rely heavily on oxygen for energy production. Needed so that the player can play for the entire game whilst keeping intensity and not tiring.…
In cycling, due to the posture of the athlete, increased arterial pressures in the lower limbs may cause both a pressure and volume overload on the heart (O’Toole and Douglas, 1995). Intensive training and long endurance events are accompanied by some muscle damage, due to decreases in myoglobin and build up of lactic acid in the tissue (Armstrong, 1986). The VO2 max (aerobic capacity) is important in the transfer of energy. This requires an integration of the respiratory, cardiovascular and neuromuscular systems. Mahler et al (1982) reported that the respiratory system is not a limiting factor in marathon runners, finding no difference between their respiratory function and that of their sedentary controls. Therefore only the cardiovascular and the neuromuscular systems adapt to endurance training.…
During exercise the demand for oxygen increases as the respiring cells require more oxygen to meet the increased demand for energy, there’s also an increased removal of carbon dioxide, (Burton, Stokes, & Hall, 2004). Carbon dioxide is a by-product of aerobic respiration (as well as water and heat). In this experiment Douglas bags were used to collect expired gas to be used for analytical purposes. Douglas bags enable readings of both carbon dioxide and oxygen to be taken with the use of a Servomex Analyser, as well as total gas content using a dry gas meter and pump. The analysis of these results can be used to determine the gross efficiency of an athlete, Douglas bags are used as a gold-standard approach due to their high reliability (Gregson…
1. The Respiratory exchange ratio is the ratio of the volume of carbon dioxide produced and oxygen consumed. The ratio indicates the energy that the subject is expending for indirect calorimetry, how efficient the subject 's body is at utilizing the oxygen inhaled, as well as the main substrate being used for energy during varying intensities of exercise. During rest the volume of carbon dioxide was 0.73L/min, the volume of oxygen was 0.84L/min. The RQ or RER was 0.87. Based on Table 5.1(Kenney,Wilmore, &Costill, 2012; Physiology of Sport and Exercise(5th ed.) The ratio indicates that roughly 68% of the kcal that the subject was using came from carbohydrates and the remaining 32% of the kcal came from fat. During the 50W stage the volume of carbon dioxide was 2.2L/min and the volume of oxygen was 2.9L/min. The RQ was 0.79, which indicates that the 33% of the kcal that the subject was using came from carbohydrates and that 67% of the kcal came from fat. In the 100W stage the volume of carbon dioxide was 4.08L/min and the volume of oxygen consumed was 4.1L/min. The RQ came out o be 0.99, the substrate being used was only carbohydrates at this point. The 200w stage had a carbon dioxide volume of 7.91L/min and a oxygen consumed volume of 6.51L/min. The RQ was 1.2 which indicates that the body is producing more carbon dioxide than the oxygen being consumed. The substrate being used for energy again is only carbohydrates.…
An increase in V02 max (the maximum amount of oxygen the body can convert to work) = giving you more stamina for the long haul.…
This current study takes a closer look at the claims of a popular ergogenic aid called Oxydrene which is manufactured and distributed by a company called Novex Biotech. Oxydrene , like many other ergogenic aids, is one of great controversy. With this supplement come many bold claims that to any exercise physiologist seem unlikely. Some of these claims include increase in VO2max, increased O2 Blood saturation, increased fat utilization etc. Such bold claims are usually brushed off by most. But still the question arises, how, what, and why are these claims being made? With the oxygen saturation of arteriole blood (SaO2) in normal healthy humans being 97-98% a claim to increase the saturation past this point seems merely impossible. The reasons for this will be discussed in greater detail later in this paper.…
Stress test: an electrocardiographic test of heart function before, during, and after a controlled period of increasingly strenuous…
Mo Farah had to go through tough training to become the athlete he is today. Due to Mo’s type of events, (10,000 and 5,000 meters) he needs a high aerobic capacity and VO2 max. Aerobic capacity is how well the lungs, heart and the blood vessels work together, and VO2 Max is the maximum oxygen consumption attainable during maximal work.…
Vital capacity is defined as the maximum volume of air that can be expired from the lungs during a relaxed, but complete from a position of full inspiration (Booker 2013). It has been recognized that healthy individuals vary considerably in the volume of air which they can expire after a full inspiration. Age, sex, height, weight, the size and flexibility of the chest, muscular strength and physical training are factors which may singly or jointly affect the vital capacity (West 1920). Spirometry measures airflow from fully inflated lungs over time in liters (Petty 2002).…
The main aim of the practical was to assess, what affects did light exercise have on the systolic and diastolic blood pressure, heart and respiration rate, tidal volume, minute volume and percentage of gas. The readings were taken before exercise, during exercise and after exercise. Blood pressure is defined as the amount of pressure exerted on the vessels walls, during blood flow. Blood pressure can be measured using a sphygmomanometer. The upper value indicates the systolic pressure; this is the highest level of pressure obtained. This is usually 120mm Hg in healthy adult. The diastolic blood pressure is the pressure achieved before the aortic valves reopen, which is usually between 70- 80mm (Barbara, J.C. 2005). The heart rate is the number of beats that is pumped by the heart per minute. It’s measured by taking the pulse rate. Respiratory rate is the number of breath exhaled and inhaled in a single breath. Respiratory rate can be measured simply by observing the person’s chest and stomach rise and fall. It is usually measured in breath per minute. Tidal volume is the amount of air inhaled or exhaled in a single breath. In an average human, the tidal volume is about 0.5litres, while the lungs can hold up to ten times more than this. Minute volume, is the amount of air or fluid moved per minute.…
The purpose of this experiment was to study the scientific method and investigate the effect of gender on the cardiovascular fitness.…