Do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? Explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.

Do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? Explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter13: The Respiratory System

Section: Chapter Questions

Problem 10RE

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Do athletes training at high altitudes have more or less oxygen molecules per ml of blood then
athletes training at low altitudes? Explain why this difference gives athletes who train at high
altitudes an advantage over athletes who train only at low altitudes.

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Altitude effects on exercise are caused mainly by increased CO2 production due to the physiological response to low pressure the increased influence of nitrogen gas at higher altitudes lowered 02 partial pressure the direct effect of low pressure on breathing
Under certain circumstances, the respiratory quotient (RQ value ) for an athlete exercising intensely can rise above one. How is this possible?
After light exercise, the oxygen consumed in recovery is approximately equal to the oxygen deficit, which is the amount of additional oxygen that would have been consumed had oxygen consumption reached steady state immediately. How is the oxygen consumed in recovery used?
When we change altitude, during the next few days, the body responds by adjusting Hb cooperativity. This can be accomplished by changing the concentration of 2,3-BPG in the blood. After moving from a low altitude to a higher altitude, does 2,3,-BPG increase or decrease? Explain how this affects oxygen transport capacity
Why is sprint performance not affected by altitude?
During maximal aerobic exercise, exercise-induced arterial hypoxemia may result in elite endurance athletes due to which of the following? reduced venous return leads to decreased pulmonary capillary flow rate transit time through the pulmonary capillaries is much shorter oxygen diffusion capacity is no longer calculated using capillary mean PO2 lower venous O2 content increases the PO2 gradient
The below graph shows both ventilation and blood lactate concentration as a function of total oxygen consumption during a bout of exercise. Explain the relationship between these two variables and why these two measures (ventilatory threshold and lactate threshold) tend to occur around the same level of exercise intensity.
Explain the mechanism through which the hemoglobin oxygen dissociation curve changes in exercising tissues relative to those tissues at rest. How does this change affect the amount of oxygen delivered to exercising tissues?
during exercise what organ is most responsible for the increased production of carbon dioxide? Brain, skeletal muscles, or heart.
Define the Bohr effect and describe how it explains maximal oxygen delivery to tissues in greatest need.
Mark's maximal oxygen consumption on an exercise test is 55 ml/kg/min. What MET level did he acheive on his exercise test? Hint: When going from METS to ml/kg/min your multiply by 3.5 ml/kg/min. When going in the opposite direction, ml/kg/min to METS you divide by 3.5 ml/kg/min.
Consider the graph below showing the effect of altitude on ventilation rate in 25 healthy, non-smoking males after different exercise intensities. Ventilation rate / dm³ min-1 601 50- 40- 30- 20- 10- 0+ PREGNALI DOM Sea level 4000 m Key: rest 20% of maximal aerobic power 30% of maximal aerobic power 40% of maximal aerobic power a. Identify the independent and dependent variables. [1] b. Compare and contrast the effect of increasing exercise intensity at sea level and at an altitude of 4000 m. Refer specifically to the graph. [2] C. At 4000m the availability of oxygen is lower than at sea level. Explain why the pattern seen in ventilation rate occurs by referring to external respiration. [2]