The primary determinant of oxygen uptake during exercise is the:Group of answer choicesExercise power outputExercise durationRelative mix of CHO and fat
Question
The primary determinant of oxygen uptake during exercise is the:Group of answer choicesExercise power outputExercise durationRelative mix of CHO and fat
Solution
The primary determinant of oxygen uptake during exercise is the Exercise power output.
Here's a step-by-step explanation:
-
Oxygen uptake during exercise is primarily determined by the intensity of the exercise, which is measured by the power output. The higher the intensity of the exercise, the more oxygen is required by the muscles to produce energy.
-
Exercise duration and the relative mix of carbohydrates (CHO) and fat can also influence oxygen uptake, but they are not the primary determinants.
-
The duration of the exercise can affect oxygen uptake because the longer the exercise, the more oxygen is needed. However, even long-duration, low-intensity exercise does not require as much oxygen as high-intensity, short-duration exercise.
-
The relative mix of CHO and fat can affect how much oxygen is used because these nutrients require different amounts of oxygen to be metabolized. However, this is also secondary to the intensity of the exercise.
-
Therefore, the primary determinant of oxygen uptake during exercise is the exercise power output.
Similar Questions
During the “slow” phase of the excess post-exercise oxygen consumption (EPOC) a factor contributing to increased oxygen uptake is:Group of answer choicesIncreased FFA oxidationLactate oxidationCreatine phosphate resynthesis
Which of the following parameters is the most important determinant of maximal oxygen uptake:Group of answer choicesmuscle oxidative capacitymaximal ventilationmaximal cardiac output
Exercise is associated with alterations to many basic physiological processes, including changes in metabolism and the cardiovascular system. As the intensity of exercise rises, both the cardiac output and oxygen consumption increase, as shown in Figure 1.Figure 1 Changes in cardiac output and oxygen consumption in response to various levels of exerciseThe cardiac output CO represents the volume of blood pumped by the heart in 1 minute. The CO is calculated from the heart rate HR and stroke volume SV using the equationCO = HR ∙ SVEquation 1Experimental data has shown that the HR increases linearly with the exercise output Eout, leading to the relationshipHR = 0.65 ∙ Eout + 75Equation 2The metabolism of nutrients consumes oxygen and generates carbon dioxide as a waste product. The amount of carbon dioxide generated depends on the type of macronutrient that is consumed. For example, when carbohydrates are metabolized, every liter of oxygen consumed causes the generation of 1.0 liter of carbon dioxide. Alternatively, the metabolism of fats leads to 0.7 liters of carbon dioxide per liter of oxygen, and the metabolism of proteins generates 0.8 liters of carbon dioxide for each liter of oxygen. Question 56While exercising on a treadmill, a person has a cardiac output of 15 L/min and produces carbon dioxide at 0.091 mol/min. What is their ratio of metabolizing carbohydrates to fats during the exercise? (Assume all gasses are ideal and are at STP.)A.1:2B.1:1C.1:0D.2:1Submit
What is an immediate effect of cardiorespiratory endurance exercise?Group of answer choicesincreased blood pressuredecreased oxygen transportdecreased blood flow to the braindecreased stroke volume
Using oxygen, glucose and fatty acids in varying proportions during aerobics.*1 pointA. PHYSICAL ACTIVITY AND DURATIONB. ENERGY PRODUCTIONC. AEROBIC CAPACITYD. CARDIO RESPIRATORY ENDURANCE
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.