Respiratory Responses to Acute Exercise

These flashcards cover key vocabulary terms and concepts related to the respiratory responses observed during acute exercise.

Ventilatory Response

The body's adjustments in breathing patterns in relation to physical activity.

Steady-State Exercise

A constant intensity exercise where the body's oxygen consumption level stabilizes.

Tidal Volume

The amount of air inhaled or exhaled in a single breath.

Metabolic Rate

The rate at which the body uses energy; affects oxygen consumption and ventilation.

Chemoreceptors

Sensors in the carotid bodies that detect changes in blood composition and regulate breathing.

EPOC

Excess post-exercise oxygen consumption; the increased rate of oxygen intake following strenuous activity.

Ventilation Rate

The frequency of breaths taken per minute, influenced by exercise intensity.

Ventilatory Threshold

The point during exercise where ventilation increases disproportionately compared to oxygen consumption.

Acidosis

A condition characterized by an increase in H+ concentration, resulting in a lower pH.

Bicarbonate Buffer System

A mechanism in the blood that helps maintain pH balance by neutralizing excess acids.

Exercise-induced Arterial Hypoxemia (EIAH)

A decrease in arterial oxygen levels during high-intensity exercise in some trained individuals.

Dyspnea

Shortness of breath experienced during exercise, often due to poor aerobic fitness.

Hyperventilation

An increased rate and depth of breathing, often due to anxiety or anticipation of exercise.

Valsalva Maneuver

Forcibly exhaling against a closed airway, which increases pressure in the chest and can affect blood flow and heart function.

Respiratory Muscle Fatigue

The decline in respiratory muscles' ability to function due to extended physical activity.

Alkalosis

A condition where blood pH is higher than normal, often linked to decreased concentration of H+ ions.