Cardiorespiratory Responses to Acute Exercise

These flashcards cover key terms and concepts related to the cardiovascular and respiratory responses during acute exercise, as discussed in the lecture.

Resting Heart Rate (RHR)

The number of beats per minute the heart normally beats when the body is at rest.

Anticipatory response

The increase in heart rate above resting levels just before the start of exercise.

Maximum Heart Rate (HRmax)

The highest heart rate achieved during all-out effort to volitional fatigue.

Steady-state Heart Rate

The stable heart rate achieved after several minutes of exercise at a given intensity.

Stroke Volume (SV)

The amount of blood ejected by the heart with each beat.

Preload

The end-diastolic ventricular stretch, which affects stroke volume.

Cardiac Output (Q)

The volume of blood the heart pumps per minute, calculated as Q = HR x SV.

Fick Principle

A principle that states VO2 = Q x (a-v)O2 difference, explaining how oxygen consumption is calculated.

Mean Arterial Pressure (MAP)

The average blood pressure in a person's arteries during one cardiac cycle.

Blood Flow Redistribution

The process of redirecting blood flow to areas with the greatest metabolic need during exercise.